384 results match your criteria Biology Of Sport[Journal]


Medical recommendations for home-confined footballers' training during the COVID-19 pandemic: from evidence to practical application.

Biol Sport 2020 Jun 10;37(2):203-207. Epub 2020 Apr 10.

Paris Saint Germain FC, France.

In early 2020, the world is facing a global emergency called COVID-19. Many professional footballers around the world are home confined. The maintenance of physical capacity is a fundamental requirement for the athlete, so the training sessions must be adapted to this unique situation. Read More

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http://dx.doi.org/10.5114/biolsport.2020.94348DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249801PMC

The influence of a badminton competition with two matches in a day on muscle damage and physical performance in elite junior badminton players.

Biol Sport 2020 Jun 3;37(2):195-201. Epub 2020 Apr 3.

Faculty of Physical Activity and Sports Sciences; Universidad de León, Spain.

To investigate the effects of a badminton competition with 2 matches in a day on hip strength and range of motion (ROM) and exercise-induced muscle damage in elite junior badminton players. Twenty players (age: 17±0.8 years; body mass: 62. Read More

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http://dx.doi.org/10.5114/biolsport.2020.94243DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249798PMC

Eight months of school-based soccer improves physical fitness and reduces aggression in high-school children.

Biol Sport 2020 Jun 31;37(2):185-193. Epub 2020 Mar 31.

Athlete Health and Performance Research Centre, Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.

School-based programmes have shown promising results in the reduction of aggressive behaviour, but the effectiveness of physical activity modalities among adolescents remains to be determined. The aim of this study was to determine the effects of a school-based soccer programme on physical fitness and aggression in adolescent students. One hundred and five high school students were randomized to a small-sided soccer training group (SG) or a control group (CG). Read More

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http://dx.doi.org/10.5114/biolsport.2020.94240DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249792PMC

Leg asymmetry and muscle function recovery after anterior cruciate ligament reconstruction in elite athletes: a pilot study on slower recovery of the dominant leg.

Biol Sport 2020 Jun 31;37(2):175-184. Epub 2020 Mar 31.

ASPETAR, Qatar Orthopedic and Sports Medicine Hospital, Doha, Qatar.

The aim of this study was to examine performance in hopping tests in male athletes after anterior cruciate ligament reconstruction (ACLR) in the 4-to-6 months post-surgery period. A total of 36 athletes (24 ACLR and 12 controls) participated in this study. The ACLR group consisted of athletes who had undergone an ACLR on their dominant side (ACL DG n=16) or non-dominant side (ACL NDG n=8). Read More

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http://dx.doi.org/10.5114/biolsport.2020.94238DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249793PMC

Running-based high-intensity interval training vs. small-sided game training programs: effects on the physical performance, psychophysiological responses and technical skills in young soccer players.

Biol Sport 2020 Jun 31;37(2):165-173. Epub 2020 Mar 31.

Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Rua Escola Industrial e Comercial de Nun'Álvares, 4900-347, Viana do Castelo, Portugal.

This study aimed to compare the effects of 5-week running-based high-intensity interval training (HIIT) vs. small-sided game training (SSG) on the physical performance, psychophysiological responses and technical skills in young soccer players. Twenty young male soccer players (age: 14. Read More

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http://dx.doi.org/10.5114/biolsport.2020.94237DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249797PMC

Acute effects of training load on contractile properties during a competitive microcycle in elite soccer players.

Biol Sport 2020 Jun 30;37(2):157-163. Epub 2020 Mar 30.

Faculty of Education and Sport Sciences, University of Vigo, Pontevedra, Spain.

The aim of this study was to examine changes in muscle contractile properties across a microcycle of training in professional soccer players during the in-season period. Nineteen professional soccer players were assessed with tensiomyography (TMG) on the biceps femoris and rectus femoris before and after 5 training sessions of an in-season microcycle. Training load was quantified during each training session. Read More

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http://dx.doi.org/10.5114/biolsport.2020.93041DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249794PMC

Match performance in a reference futsal team during an international tournament - implications for talent development in soccer.

Biol Sport 2020 Jun 11;37(2):147-156. Epub 2020 Feb 11.

High Performance Department, Fédération Française de Football, Paris, 75015, France.

Anecdotal evidence suggests that futsal can aid talent development for 11 a-side soccer through the potential for transfer of the game's skills and constraints. However, additional scientific research is necessary to enhance understanding of the technical and physical demands of futsal and the potential returns for soccer player development. Accordingly, this study examined selected characteristics of physical (internal and external loads) and technical performance in international futsal match-play in order to study the potential of these for skill transfer and aiding soccer player development. Read More

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http://dx.doi.org/10.5114/biolsport.2020.93040DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249802PMC

The evolution of physical and technical performance parameters in the Chinese Soccer Super League.

Biol Sport 2020 Jun 11;37(2):139-145. Epub 2020 Feb 11.

Facultad de Ciencias de la Actividad Física y del deporte, INEF-Madrid Universidad Politécnica de Madrid, Madrid, España.

Performance analysis in soccer has attained greater importance for coaching staff in order to gather and manage useful information (i.e., physical, technical, and tactical) of their teams during consecutive seasons. Read More

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http://dx.doi.org/10.5114/biolsport.2020.93039DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249799PMC

Physical and physiological demands of basketball small-sided games: the influence of defensive and time pressures.

Biol Sport 2020 Jun 11;37(2):131-138. Epub 2020 Feb 11.

Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.

Different small-sided games (SSG) can be used by coaches to induce specific demands on athletes during team sports training. In basketball, defensive and time pressures are common stressors experienced by players during official matches. However, no studies have investigated the effect of changing these variables in SSG during training. Read More

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http://dx.doi.org/10.5114/biolsport.2020.93038DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249796PMC

Effects of strength training under hypoxic conditions on muscle performance, body composition and haematological variables.

Biol Sport 2020 Jun 11;37(2):121-129. Epub 2020 Feb 11.

GAEDAF Research Group. Faculty of Sport Science, University of Extremadura, Spain.

The addition of a hypoxic stimulus during resistance training is suggested to increase the metabolic responses, enhancing hypertrophy and muscle strength. The purpose of this study was to investigate the effects of resistance training performed at submaximal intensities combined with normobaric hypoxia on muscular performance, body composition and haematological parameters. Thirty-two untrained subjects participated in this study (weight: 74. Read More

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http://dx.doi.org/10.5114/biolsport.2020.93037DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249800PMC

Effects on performance of active and passive hypoxia as a re-warm-up routine before a 100-metre swimming time trial: a randomized crossover study.

Biol Sport 2020 Jun 11;37(2):113-119. Epub 2020 Feb 11.

Departamento de Desporto e Saúde, Escola de Ciência e Tecnologia, Universidade de Évora, Évora, Portugal.

Passive and active hypoxia could be used as a tool during a transitional phase to maintain the effects of warm-up and optimize athletic performance. Our purpose was to evaluate and compare the effects of four different re-warm-up strategies, i.e. Read More

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http://dx.doi.org/10.5114/biolsport.2020.93035DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249803PMC

Postactivation potentiation effect of two lower body resistance exercises on repeated jump performance measures.

Biol Sport 2020 Jun 11;37(2):105-112. Epub 2020 Feb 11.

Centre of Excellence for Coaches Education and Sport Science, Department of Sport, Exercise, Recreation and Kinesiology, East Tennessee State University, Tennessee, USA.

This study examined the postactivation potentiation effects of combining squat and deadlift exercises on subsequent repeated jump performance. Fifteen, resistance-trained youth wrestlers were randomly allocated to either undertake back squats (BSq), deadlift (DL) or BSq and DL as supersets (BSq+DL), with a repeated jump protocol performed 8-minutes post-exercise in each session. Thereafter, a control condition (CON) was completed involving a general warm-up, followed by the repeated jump protocols. Read More

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http://dx.doi.org/10.5114/biolsport.2020.93034DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249795PMC

A single oral dose of beetroot-based gel does not improve muscle oxygenation parameters, but speeds up handgrip isometric strength recovery in recreational combat sports athletes.

Biol Sport 2020 Mar 30;37(1):93-99. Epub 2020 Jan 30.

Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Federal University of Rio de Janeiro, Macaé, RJ, 27971-525, Brazil.

Although the effect of beetroot supplementation on exercise performance has been widely demonstrated to improve the performance of cyclists, runners, and swimmers, its effect on combat sports remains inconclusive. The present study assessed the effect of beetroot-based gel (BG) supplementation on maximal voluntary contraction (MVC), exercise time until fatigue (ETF), muscle O saturation (SmO), and blood volume (tHb) in response to handgrip isotonic exercise (HIE) in recreational combat sport athletes. In a randomized, crossover, double-blind study, 14 combat sports athletes performed three sets of HIE (at 40% MVC) until fatigue after BG or nitrate-depleted gel (PLA) supplementation, in which forearm SmO and tHb were continuously monitored using near-infrared spectroscopy. Read More

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http://dx.doi.org/10.5114/biolsport.2020.92518DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075222PMC

Effect of a strength or hypertrophy training protocol, each performed using two different modes of resistance, on biomechanical, biochemical and anthropometric parameters.

Biol Sport 2020 Mar 6;37(1):85-91. Epub 2020 Feb 6.

Jozef Pilsudski University of Physical Education in Warsaw, Warsaw, Poland.

The study aimed to analyse the effectiveness of two variants of 8-week strength training (hypertrophy, strength) with different modes of resistance. Healthy male subjects (n=75) were allocated to five groups of equal size: hypertrophy training with a variable cam (Hyp-Cam), hypertrophy training with disc plates (Hyp-Disc), maximal strength training with a variable cam (Str-Cam), maximal strength training with disc plates (Str-Disc), and a control group (CG). The Hyp-Cam and Str-Cam groups trained with a machine where the load was adjusted to the strength capabilities of the elbow flexors. Read More

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http://dx.doi.org/10.5114/biolsport.2020.92517DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075227PMC

The effects of resistance training experience on movement characteristics in the bench press exercise.

Biol Sport 2020 Mar 25;37(1):79-83. Epub 2020 Jan 25.

Charles University in Prague, Faculty of Physical Education and Sport, Czech Republic.

The main aim of this study was to determine whether the level of experience in strength training has a significant effect on differences in the value of exercise volume determined on time under tension (TUT) and number of repetition (REP) for a specific movement tempo. The study examined 68 men divided into groups of beginners and advanced strength trained athletes. The participants performed 5 sets of bench press (BP) at 70% 1RM using either a REG, MED or SLOW metronome guided cadence. Read More

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http://dx.doi.org/10.5114/biolsport.2019.83008DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075231PMC

Physiological responses and activity demands remain consistent irrespective of team size in recreational handball.

Biol Sport 2020 Mar 30;37(1):69-78. Epub 2020 Jan 30.

Faculty of Sport and Physical Education, University of Niš, Niš, Serbia.

The aim of this study was to examine the impact of team size on acute physiological, perceptual, and activity demands of recreational handball to provide a better understanding for the potential prescription of recreational handball to achieve health benefits. Active, male college students (N=22) completed 3-, 4-, and 5-a-side handball game formats across three separate sessions following a repeated-measures, crossover design. Heart rate (HR), blood lactate concentration (BLa), rating of perceived exertion (RPE), distance covered, and frequency of accelerations/decelerations were monitored during games. Read More

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http://dx.doi.org/10.5114/biolsport.2020.92516DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075223PMC

Game schedule congestion affects weekly workloads but not individual game demands in semi-professional basketball.

Biol Sport 2020 Mar 30;37(1):59-67. Epub 2020 Jan 30.

School of Health, Medical, and Applied Sciences, Central Queensland University, Rockhampton, Queensland, Australia.

To quantify and compare workloads encountered by basketball players during individual games played across 1-, 2-, and 3-day periods in the same week, and during weeks where 1, 2, and 3 games are scheduled. Eight semi-professional male players were monitored. External workload was determined as absolute and relative (·min) PlayerLoad (PL), and total and high-intensity jumps, accelerations, decelerations, and changes of direction (COD). Read More

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http://dx.doi.org/10.5114/biolsport.2020.91499DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075230PMC

Sex differences in competitive surfers' generic and specific strength capacity.

Biol Sport 2020 Mar 30;37(1):49-57. Epub 2019 Jan 30.

Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain.

To compare the pop-up and counter movement jump (CMJ) and to analyse the relationships among the variables between sexes and different ages [under (U16), over (O16) 16 years] in male and female competitive surfers. Eighty-three surfers were divided according to sex, male (n = 55) and female (n = 28), and to age, U16 (n = 47) and O16 (n = 36). Vertical jump and pop-up movements were measured through the vertical ground reaction force with a force plate. Read More

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http://dx.doi.org/10.5114/biolsport.2020.91498DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075220PMC

Acute response of biochemical bone turnover markers and the associated ground reaction forces to high-impact exercise in postmenopausal women.

Biol Sport 2020 Mar 24;37(1):41-48. Epub 2020 Jan 24.

Department of Nutrition, Exercise and Sports, University of Copenhagen, Denmark Nørre Allé 51, 2200 Copenhagen N, Denmark.

The aim of the study was to examine the acute response of biochemical bone turnover markers (BTM) to high-impact jumping exercise, and to quantify the ground reaction forces (GRF) achieved during each jumping exercise, in postmenopausal women. In a randomized controlled cross-over study over three days, 29 postmenopausal women (age (mean±SD): 60.0±5. Read More

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http://dx.doi.org/10.5114/biolsport.2020.91497DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075221PMC

Factors influencing post-exercise proteinuria after marathon and ultramarathon races.

Biol Sport 2020 Mar 1;37(1):33-40. Epub 2019 Dec 1.

Department of Occupational, Metabolic and Internal Diseases, Medical University of Gdańsk, Poland.

Post-exercise proteinuria is one of the most common findings observed after short and intensive physical activity, but is observed also after long runs with low intensity. The aim of this study was to analyze factors influencing proteinuria after marathon runs. Two groups of male amateur runners were studied. Read More

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http://dx.doi.org/10.5114/biolsport.2020.89939DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075229PMC

Effects of focal vibration on power and work in multiple wingate tests.

Biol Sport 2020 Mar 1;37(1):25-31. Epub 2019 Dec 1.

Department of Human Science, Society and Health University of Cassino e Lazio Meridionale Via S. Angelo - Località Folcara 03043 Cassino (FR), Italy.

The aim of the study was to assess the effects of a specific protocol, based on a focal muscle vibration, on mechanical parameters in an exercise composed of five repeated bouts of sprint interval tests (Wingate Anaerobic Tests, 10 seconds duration). Twenty-eight young male healthy subjects were randomized to two groups (VIB and CTRL). Peak power (PP), average peak between bouts (aP) and total exercise work (TW) were measured. Read More

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http://dx.doi.org/10.5114/biolsport.2020.89938DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075225PMC

Technical-tactical profile, perceived exertion, mental demands and enjoyment of different tactical tasks and training regimes in basketball small-sided games.

Biol Sport 2020 Mar 19;37(1):15-23. Epub 2019 Nov 19.

Lithuanian Sports University, Institute of Sport Science and Innovations, Kaunas, Lithuania.

This study aimed to evaluate the technical-tactical, perceptual and mental demands of basketball small-sided games (SSGs). Twelve male semi-professional players participated in four half-court 3vs3 SSGs characterized by different tactical tasks (offensive; defensive) and training regimes (long-intermittent; short-intermittent). The SSGs were video-recorded to perform notational analysis of technical-tactical parameters. Read More

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http://dx.doi.org/10.5114/biolsport.2020.89937DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075224PMC

One night of sleep deprivation impairs executive function but does not affect psychomotor or motor performance.

Biol Sport 2020 Mar 19;37(1):7-14. Epub 2019 Nov 19.

Institute of Sports Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania.

The current study assessed the impact of one night of sleep deprivation on cognitive, motor and psychomotor performance. Thirty healthy young adult male subjects completed a 24 h control or 24 h sleep deprived trial. For the control trial, participants (N = 15) were allowed normal night sleep (~8 h). Read More

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http://dx.doi.org/10.5114/biolsport.2020.89936DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075226PMC

Methods may matter in injury surveillance: "how" may be more important than "what, when or why".

Biol Sport 2020 Mar 19;37(1):3-5. Epub 2019 Nov 19.

Aspetar Orthopedic and Sports Medicine Hospital, Doha, Qatar.

To examine if and how adjustments in injury surveillance recording methodology may have influenced injury rates. Injury and exposure data were collected among professional male players from the Qatar Stars League from the 2008-2009 season to the 2017-2018 season. There have been four iterations of our data collection methods. Read More

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http://dx.doi.org/10.5114/biolsport.2020.89935DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075228PMC

Systematic review of intra-abdominal and intrathoracic pressures initiated by the Valsalva manoeuvre during high-intensity resistance exercises.

Biol Sport 2019 Dec 17;36(4):373-386. Epub 2019 Oct 17.

Department of Sport Games, Faculty of Physical Education and Sport, Charles University in Prague.

The Valsalva manoeuvre, intra-abdominal pressure (IAP) and intrathoracic pressure (ITP) play important roles in resistance training and common daily activities. The purpose of this review is to summarize the ITP and IAP responses to resistance exercises and to determine which exercises elicit the highest or lowest body pressure values under high-intensity resistance exercise. The PubMed, Scopus and Web of Science databases were searched until November 1, 2018. Read More

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http://dx.doi.org/10.5114/biolsport.2019.88759DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945051PMC
December 2019

Associations between the dopamine D4 receptor gene polymorphisms and personality traits in elite athletes.

Biol Sport 2019 Dec 31;36(4):365-372. Epub 2019 Oct 31.

Faculty of Physical Education, Gdańsk University of Physical Education and Sport, Gdańsk, Poland.

Personality traits and temperament may affect sports performance. Previous studies suggest that dopamine may play an important role in behavior regulation and physical exercise performance. The aim of this study is to determine associations between dopamine D4 receptor gene (DRD4 Ex3) polymorphisms and personality traits (such as neuroticism, extraversion, openness, agreeability and conscientiousness) in elite combat athletes. Read More

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http://dx.doi.org/10.5114/biolsport.2019.85457DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945044PMC
December 2019
0.789 Impact Factor

Motion analysis of elite Polish soccer goalkeepers throughout a season.

Biol Sport 2019 Dec 31;36(4):357-363. Epub 2019 Oct 31.

Institute of Physical Education, Kazimierz Wielki University in Bydgoszcz, Poland.

The study aims were to determine the distance covered by goalkeepers during matches in the context of game duration and result, to identify the area of their most frequent activity, and to assess goalkeepers' involvement in games finished with a win, draw, or loss. The investigation was based on two innovative tools: the goalkeeper's activity index (GAI) and an analysis of 5-min periods. A video tracking system was used to monitor 17 goalkeepers from Polish National League teams during 15 matches. Read More

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http://dx.doi.org/10.5114/biolsport.2019.88758DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945045PMC
December 2019

Differences in motivation during the bench press movement with progressive loads using EEG analysis.

Biol Sport 2019 Dec 31;36(4):351-356. Epub 2019 Oct 31.

Laboratory of Human Functional Research, The Jerzy Kukuczka Academy of Physical Education in Katowice, Poland.

Considering our preliminary research with EEG analysis of the bench press in experienced powerlifters, we hypothesized that there would be significant differences in motivation between novice and elite powerlifters. Therefore the main objective of this study was to identify patterns of frontal alpha asymmetry (FAA) of the prime movers by alpha frequency band analysis (named as alpha motivation values) for each 35-100% one-repetition maximum (1RM) during the flat bench press. Ten novice powerlifters with no more than 2. Read More

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http://dx.doi.org/10.5114/biolsport.2019.88757DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945046PMC
December 2019

Hematological status and endurance performance predictors after low altitude training supported by normobaric hypoxia: a double-blind, placebo controlled study.

Biol Sport 2019 Dec 31;36(4):341-349. Epub 2019 Oct 31.

Department of Nutrition Physiology and Dietetics, Institute of Sport - National Research Institute, Warsaw, Poland.

The benefits of altitude/hypoxic training for sea level performance are still under debate. This study examined the effects of low altitude training supported by normobaric hypoxia on hematological status and endurance performance predictors in elite female cyclists. Twenty-two female cyclists trained for 3 weeks at low altitude (<1100 m) and 2 weeks near sea level. Read More

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http://dx.doi.org/10.5114/biolsport.2019.88760DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945048PMC
December 2019

Short-term H inhalation improves running performance and torso strength in healthy adults.

Biol Sport 2019 Dec 31;36(4):333-339. Epub 2019 Oct 31.

University of Novi Sad, Faculty of Sport and Physical Education, Novi Sad, Serbia.

In this randomized, double-blind, placebo-controlled, crossover pilot trial, we evaluated the effects of 7-day H inhalation on exercise performance outcomes and serum hormonal and inflammation profiles in a cohort of young men and women. All participants (age 22.9 ± 1. Read More

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http://dx.doi.org/10.5114/biolsport.2019.88756DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945053PMC
December 2019

Contrasts in intermittent endurance performance and heart rate response between female and male soccer players of different playing levels.

Biol Sport 2019 Dec 9;36(4):323-331. Epub 2019 Nov 9.

Institute of Movement and Training Science I, University of Leipzig, Jahnallee 59, 04109 Leipzig, Germany.

This study compared intermittent endurance performance and heart rate (HR) response, as well as their relationship, by sex and competitive level in soccer. A total of 68 outfield (18 elite and 16 sub-elite female, 17 elite and 17 sub-elite male) soccer players performed the Interval Shuttle Run Test (ISRT) with monitored HR. Sex and level effects were evaluated by two-way analysis of variance (ANOVA) and the relationships between parameters using Pearson's correlation coefficient. Read More

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http://dx.doi.org/10.5114/biolsport.2019.88755DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945050PMC
December 2019

The inter-unit and inter-model reliability of GNSS STATSports Apex and Viper units in measuring peak speed over 5, 10, 15, 20 and 30 meters.

Biol Sport 2019 Dec 10;36(4):317-321. Epub 2019 Oct 10.

School of Health and Sports Science, University of Suffolk, Ipswich, United Kingdom.

The objective of this investigation was to evaluate the inter-unit reliability (Apex vs. Apex; Viper vs. Viper) and inter-model reliability (Apex vs. Read More

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http://dx.doi.org/10.5114/biolsport.2019.88754DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945047PMC
December 2019

Quantification of external and internal match loads in elite female team handball.

Biol Sport 2019 Dec 10;36(4):311-316. Epub 2019 Oct 10.

Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania.

To assess concurrently the external and internal match loads in elite female team handball players and to verify the differences in match loads between matches characterized by different durations. Eight elite female court handball players (mean±SD; age 23.0±2. Read More

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http://dx.doi.org/10.5114/biolsport.2019.88753DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945049PMC
December 2019

Meta-analyses of the association between the Gly482Ser polymorphism and athletic performance.

Biol Sport 2019 Dec 10;36(4):301-309. Epub 2019 Oct 10.

Department of Cell Biology and Genetics, Chongqing Medical University, Chongqing, 400016, China.

Peroxisome proliferator-activated receptor γ coactivator 1α (PGC1α) encoded by the gene is a vital regulator of glucose and fatty acid oxidation, mitochondrial biogenesis, and skeletal muscle fibre conversion. Several studies have investigated the association between Gly482Ser polymorphism and athletic performance in humans. However, the results were contradictory. Read More

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http://dx.doi.org/10.5114/biolsport.2019.88752DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945052PMC
December 2019

Association of the TNF- -308G/A polymorphism with lipid profile changes in response to aerobic training program.

Biol Sport 2019 Sep 31;36(3):291-296. Epub 2019 Jul 31.

Faculty of Physical Education, Gdansk University of Physical Education and Sport, Gdansk, Poland.

Promoter polymorphism of the tumor necrosis factor-α (TNF-) gene is associated with obesity-related traits, although the role of its potential modifying effect on changes in obesity-related parameters achieved through a training program is still unknown. The aim of the present study was to examine whether the TNF--308G/A polymorphism (rs1800629) influences the effects of a training program. Accordingly, we studied the alleles and genotypes distribution in a group of 168 Polish Caucasian women measured for selected body mass and composition, as well as biochemical parameters before and after the realization of a 12-week aerobic training program. Read More

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http://dx.doi.org/10.5114/biolsport.2019.85456DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786320PMC
September 2019
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48-hour recovery of biochemical parameters and physical performance after two modalities of CrossFit workouts.

Biol Sport 2019 Sep 31;36(3):283-289. Epub 2019 Jul 31.

Faculty of Sport Sciences. University of Extremadura, Cáceres (Spain).

CrossFit is high-intensity interval training involving routines called 'workouts of the day' (WOD). The aim of the present study is to analyse biochemical parameters and physical performance after two modalities of CrossFit WODs, and to evaluate 48-hour recovery. Twelve trained CrossFit practitioners (age: 30. Read More

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http://dx.doi.org/10.5114/biolsport.2019.85458DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786329PMC
September 2019
1 Read

Effects of whole-body vibration training frequency on neuromuscular performance: a randomized controlled study.

Biol Sport 2019 Sep 31;36(3):273-282. Epub 2019 Jul 31.

Department of Physical Education and Sports Sciences, University of Thessaly, Trikala, Greece.

This study compared the efficacy of two whole-body vibration (WBV) protocols with equal training volume and different frequency of training sessions/week on body composition and physical fitness. Sixty male air force cadets (age: 20.5±1. Read More

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http://dx.doi.org/10.5114/biolsport.2019.87049DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786327PMC
September 2019

"How" is more important than "how much" for game possession in elite northern hemisphere rugby union.

Biol Sport 2019 Sep 31;36(3):265-272. Epub 2019 Jul 31.

Neuromuscular Function Research Group, School of Exercise & Sport Sciences (SUISM), Department of Medical Sciences, University of Torino, Turin, Italy.

The present study aimed to analyse technical and tactical aspects of rugby teams competing in the 2016/17 PRO12 Championship (12 professional club teams from Wales, Scotland, Italy, and Ireland) according to: margin of victory (close and balanced games, 1-9 and 10-26 points of difference in final score, respectively), ranking position [the four best placed clubs from each nation (the 1-4 team) and the three following ranked clubs (the 5-7 team)], and game outcome and ranking combined (winning and losing performances in the 1-4 and 5-7 team subgroups). One hundred and thirty-two games were analyzed according to 20 key performance indicators. A non-parametric approach was applied to evaluate differences (p≤0. Read More

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http://dx.doi.org/10.5114/biolsport.2019.87048DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786328PMC
September 2019

Effects of different repeated sprint-training frequencies in youth soccer players.

Biol Sport 2019 Sep 31;36(3):257-264. Epub 2019 Jul 31.

Faculty of Education and Sport Sciences, University of Vigo, Pontevedra, Spain.

The aim of this study was to determine the effects of 2 different repeated-sprint ability (RSA) training frequencies (2 RSA sessions per week [RSA2D] or 1 RSA session [RSA1D]) under volume-equated conditions on sprint and RSA performance in under-15 (U15) soccer players. Twenty-seven youth male soccer players (age: 12.29±0. Read More

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http://dx.doi.org/10.5114/biolsport.2019.87047DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786322PMC
September 2019

Running technique is more effective than soccer-specific training for improving the sprint and agility performances with ball possession of prepubescent soccer players.

Biol Sport 2019 Sep 31;36(3):249-255. Epub 2019 Jul 31.

Neuromuscular Function Research Group, School of Exercise & Sport Sciences (SUISM), Department of Medical Sciences, University of Torino, Turin, Italy.

Soccer-specific training is easily associable to players' sprint abilities demonstrated during a match. However, no clear evidence has been provided to show whether this approach is more effective than training focused on running techniques for sprints in prepubescent soccer players. Thus, the present study aimed at comparing the effects of these two training approaches on prepubescent soccer players' sprint performances. Read More

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http://dx.doi.org/10.5114/biolsport.2019.87046DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786321PMC
September 2019

Effects of in-season enhanced negative work-based vs traditional weight training on change of direction and hamstrings-to-quadriceps ratio in soccer players.

Biol Sport 2019 Sep 31;36(3):241-248. Epub 2019 Jul 31.

Department of Biomedical Sciences for Health, Università degli Studi di Milano, Italy.

The present study investigated the effects of in-season enhanced negative work-based training (ENT) vs weight training in the change of direction (COD), sprinting and jumping ability, muscle mass and strength in semi-professional soccer players. Forty male soccer players participated in the eight-week, 1 d/w intervention consisting of 48 squat repetitions for ENT using a flywheel device (inertia=0.11 kg·m ) or weight training (80%1 RM) as a control group (CON). Read More

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http://dx.doi.org/10.5114/biolsport.2019.87045DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786325PMC
September 2019

The most demanding passages of play in football competition: a comparison between halves.

Biol Sport 2019 Sep 14;36(3):233-240. Epub 2019 Jun 14.

FC Barcelona Sports Performance Department. Barcelona, Spain.

The purpose of this investigation was to determine the differences between halves in the most demanding passages of play in football players according to playing position and duration-specific activity. Global positioning system data were collected from twenty-three football players from a reserve squad of the Spanish La Liga. A total of 265 individual match half data were analysed across the competitive season. Read More

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http://dx.doi.org/10.5114/biolsport.2019.86005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786330PMC
September 2019
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No effect of meal intake on physiological or perceptual responses to self-selected high intensity interval exercise (HIIE).

Biol Sport 2019 Sep 30;36(3):225-231. Epub 2019 May 30.

Department of Kinesiology, California State University-San Marcos, San Marcos, CA USA.

The present study examined the effect of meal intake on physiological and psychological indices during self-selected high intensity interval exercise (HIIE). Seventeen active men and women (age = 26.4 ± 5. Read More

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http://dx.doi.org/10.5114/biolsport.2019.85557DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786323PMC
September 2019

Can sport-specific training affect vertical jumping ability during puberty?

Biol Sport 2019 Sep 30;36(3):217-224. Epub 2019 May 30.

Department of Physical Education and Sport Sciences, University of Thessaly, Trikala, Greece.

Vertical jumping ability (VJ) is an important component for successful performance in various team sports such as volleyball, basketball, and soccer. There is evidence that the sport-specific training in these sports may affect the development of VJ throughout the developmental years. Thus, the main objective of this study was to investigate the sport-related effect (volleyball, basketball, soccer) on vertical jumping ability (VJ) and on the stretch-shortening cycle (SSC) during puberty. Read More

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http://dx.doi.org/10.5114/biolsport.2019.85455DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786324PMC
September 2019

Do asymmetry scores influence speed and power performance in elite female soccer players?

Biol Sport 2019 Sep 30;36(3):209-216. Epub 2019 May 30.

Faculty of Science and Technology, London Sports Institute, Middlesex University, London, UK.

This study examined the relationships between vertical jump asymmetries and speed and power performance in elite female soccer athletes. Sixteen professional female soccer players (age: 23.0 ± 3. Read More

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http://dx.doi.org/10.5114/biolsport.2019.85454DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786326PMC
September 2019

Adolescent female soccer players' soccer-specific warm-up effects on performance and inter-limb asymmetries.

Biol Sport 2019 Sep 28;36(3):199-207. Epub 2019 May 28.

Faculty of Health Sciences, University of San Jorge, Zaragoza, Spain.

No studies have assessed whether changes in physical performance and inter-limb asymmetries (ILA) can be achieved with the FIFA 11+ prevention programme in adolescent female soccer players. The aim of this study was to assess the effect of the FIFA 11+ programme compared with a standard warm-up on physical performance and ILA in adolescent female soccer players. Thirty-six adolescent female soccer players were randomly assigned to an experimental (EG; n = 19) or a control group (CG; n = 17). Read More

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http://dx.doi.org/10.5114/biolsport.2019.85453DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786331PMC
September 2019

Test-retest reliability of TRIMP in collegiate ice hockey players.

Biol Sport 2019 Jun 25;36(2):191-194. Epub 2019 Apr 25.

Human Performance Laboratory, Department of Education, Health and Behavior Studies, University of North Dakota, Grand Forks, ND, USA.

The utility of the heart rate derived variable TRaining IMPulse (TRIMP) for assessing internal training load in ice hockey players is not clear. Having a reliable measure of internal training load during on-ice training sessions would help coaches program exercise training. This study determined the reliability of TRIMP during on-ice training sessions in ice hockey players. Read More

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http://dx.doi.org/10.5114/biolsport.2019.84670DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561225PMC
June 2019
10 Reads

Evolution of technical activity in various playing positions, in relation to match outcomes in professional soccer.

Biol Sport 2019 Jun 25;36(2):181-189. Epub 2019 Apr 25.

Department of Recreation, University School of Physical Education, Poznań, Poland.

The study presented below aimed to examine the position-specific evolution of technical activity among soccer players and how it is related to match outcomes over three consecutive domestic seasons in Germany's Bundesliga. The research was based on a sample of 13,032 individual match observations of 556 soccer players during the 2014/2015, 2015/2016 and 2016/2017 seasons. These players were classified into five positional roles: central defenders (CD), full-backs (FB), central midfielders (CM), wide midfielders (WM) and forwards (F). Read More

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http://dx.doi.org/10.5114/biolsport.2019.83958DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561231PMC
June 2019
2 Reads

Positional demands for various-sided games with goalkeepers according to the most demanding passages of match play in football.

Biol Sport 2019 Jun 14;36(2):171-180. Epub 2019 Mar 14.

Universidad Europea del Atlántico, Santander, Spain.

The main aim was to determine the differences between four training games and competitive matches (CM) according to position and compared to the most demanding passages (MDP) of competitive match play. Global Positioning System data were obtained from 21 football players belonging to the reserve squad of a Spanish La Liga club during the 2015/16 season. The training games were small-sided games (SSGs) with 5 and 6 and large-sided games with 9 and 10 outfield players per team. Read More

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http://dx.doi.org/10.5114/biolsport.2019.83507DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561222PMC
June 2019
9 Reads

Age-related influence on physical fitness and individual on-duty task performance of Portuguese male non-elite police officers.

Biol Sport 2019 Jun 14;36(2):163-170. Epub 2019 Mar 14.

ICPOL, Higher Institute of Police Science and Internal Security, Lisbon, Portugal.

(a) to analyse the effect of age on physical fitness (PF) and on-duty task (ODT) performance of male police officers (PO); (b) to analyse the relationship between PF and ODT performance of male PO; and (c) to identify the set of PF attributes which better predicts the ODT performance of male PO. A total of 97 Portuguese male non-elite PO (Public Security Police) took part in this cross-sectional study. Participants were allocated to four age categories (20-29, 30-39, 40-49, and >49 years old), and performed fourteen PF evaluations and one on-duty task simulation test (ODT-ST). Read More

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http://dx.doi.org/10.5114/biolsport.2019.83506DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561224PMC
June 2019
6 Reads