4,210 results match your criteria Journal of sports sciences[Journal]


Cervical spine kinematics during machine-based and live scrummaging.

J Sports Sci 2019 Feb 19:1-9. Epub 2019 Feb 19.

a School of Allied Health Sciences , Griffith University , Gold Coast , Australia.

The aim of this study was to compare cervical spine kinematics in rugby union front row players during machine-based and "live" scrummaging. Cervical spine kinematics was measured via electromagnetic tracking of sensors attached to the head and thorax. Joint angles were extracted from each trial at two time points ("bind" prior to engagement and instant of impact) for comparison between scrummaging conditions. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2019.1
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http://dx.doi.org/10.1080/02640414.2019.1576254DOI Listing
February 2019
6 Reads

Validity and feasibility of an obstacle course to assess fundamental movement skills in a pre-school setting.

J Sports Sci 2019 Feb 16:1-9. Epub 2019 Feb 16.

c Alliance for Research in Exercise, Nutrition and Activity , Sansom Institute, University of South Australia , Adelaide , Australia.

Failure to master age-appropriate fundamental movement skills (FMS) at a young age can limit motor skill competence affecting health. Assessments often have issues with feasibility and implementation in a field setting. As such, the purpose of this study was to investigate the validity and feasibility of the Athletic Skills Track (AST), in a pre-school setting. Read More

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http://dx.doi.org/10.1080/02640414.2019.1575326DOI Listing
February 2019

Combined effects of exposure to hypoxia and cool on walking economy and muscle oxygenation profiles at tibialis anterior.

J Sports Sci 2019 Feb 16:1-10. Epub 2019 Feb 16.

c Faculty of Health and Sports Science , Doshisya University , Kyoto , Japan.

We investigated combined effects of ambient temperature (23°C or 13°C) and fraction of inspired oxygen (21%O or 13%O) on energy cost of walking (C: J·kg·km) and economical speed (ES). Eighteen healthy young adults (11 males, seven females) walked at seven speeds from 0.67 to 1. Read More

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http://dx.doi.org/10.1080/02640414.2019.1580130DOI Listing
February 2019

The validity and reliability of the Basketball Jump Shooting Accuracy Test.

J Sports Sci 2019 Feb 16:1-7. Epub 2019 Feb 16.

a School of Health Sciences , The University of Notre Dame , Fremantle , Australia.

The aim of this study was to examine the content validity, construct validity and reliability of the newly developed Basketball Jump Shooting Accuracy Test (BJSAT). Basketball athletes from different playing levels (State Basketball League [SBL], n = 30, age: 22.7 ± 6. Read More

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http://dx.doi.org/10.1080/02640414.2019.1582138DOI Listing
February 2019

Energy expenditure and dietary intake in professional football players in the Dutch Premier League: Implications for nutritional counselling.

J Sports Sci 2019 Feb 16:1-9. Epub 2019 Feb 16.

a Institute of Sports and Exercise Studies , HAN University of Applied Sciences , Nijmegen , The Netherlands.

Selecting effective dietary strategies for professional football players requires comprehensive information on their energy expenditure (EE) and dietary intake. This observational study aimed to assess EE and dietary intake over a 14-day period in a representative group (n = 41) of professional football players playing in the Dutch Premier League (Eredivisie). Daily EE, as assessed by doubly labelled water, was 13. Read More

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http://dx.doi.org/10.1080/02640414.2019.1576256DOI Listing
February 2019

Compensatory changes in physical activity and sedentary time in children and adolescents with cystic fibrosis.

J Sports Sci 2019 Feb 16:1-6. Epub 2019 Feb 16.

a A-STEM, College of Engineering , Swansea University , Wales , UK.

Physical activity (PA) is a key element in Cystic Fibrosis (CF) treatment strategies, yet little is known as to whether activity compensation occurs. This study examined whether PA and/or sedentary time on one day were temporally associated with time spent in these intensities the following day in youth with CF. Time spent sedentary and in different PA intensities were objectively-measured for seven consecutive days in 50 youth (22 boys; 12. Read More

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http://dx.doi.org/10.1080/02640414.2019.1574543DOI Listing
February 2019

Jason Lezak again and again - linear mixed modelling analysis of change-over times in relay swimming races.

J Sports Sci 2019 Feb 15:1-8. Epub 2019 Feb 15.

a Institute for Sports and Sport Science , University of Kassel , Kassel , Germany.

The aim of this study was to examine the importance of the change-over time in swimming relay races. Top-class international 4 x 100 m freestyle races were analysed across a 10-year period including three Olympic Games and five European and World Championships. A total of 220 swimmers (116 female, 104 male) were included in this study with an average participation of 1. Read More

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http://dx.doi.org/10.1080/02640414.2019.1578448DOI Listing
February 2019
1 Read

A change point approach to analysing the match activity profiles of team-sport athletes.

J Sports Sci 2019 Feb 12:1-9. Epub 2019 Feb 12.

a Institute for Health and Sport (IHES), Victoria University , Melbourne , Australia.

In team-sport, physical and skilled output is often described via aggregate parameters including total distance and number of skilled involvements. However, the degree to which these output change throughout a team-sport match, as a function of time, is relatively unknown. This study aimed to identify and describe segments of physical and skilled output in team-sport matches with an example in Australian Football. Read More

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http://dx.doi.org/10.1080/02640414.2019.1577941DOI Listing
February 2019

Effect of body composition on redox homeostasis at rest and in response to exercise: The case of underfat women.

J Sports Sci 2019 Feb 12:1-8. Epub 2019 Feb 12.

d School of Physical Education and Sport Science , National and Kapodistrian University of Athens , Athens , Greece.

Underfat individuals have been neglected as a malnourished population in terms of redox homeostasis. The aim of the present study was to evaluate the effect of body composition on redox homeostasis at rest and in response to exercise. Underfat, lean and overfat women, classified according to their BMI and body fat percentage, participated in the study and were subjected to an acute session of eccentric exercise. Read More

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http://dx.doi.org/10.1080/02640414.2019.1578450DOI Listing
February 2019

Biomechanical differences in double poling between sexes and level of performance during a classical cross-country skiing competition.

J Sports Sci 2019 Feb 12:1-9. Epub 2019 Feb 12.

c Department of Sport and Exercise Science , University of Salzburg , Salzburg , Austria.

Biomechanical differences in double poling (DP) between sex and performance level were investigated in female and male cross-country skiers during a classical race (10/15 km). Skiers were divided into faster and slower on basis of race performance: females faster (n=20), females slower (n=20), males faster (n=20), and males slower (n=20). Based on video analysis while DP in a flat section of the track, joint and pole angles at pole plant (PP) and pole-off, cycle characteristics and the use and coordination pattern of heel-raise (raise of heels from the ground to have a higher body position at PP) were analysed. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2019.1
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http://dx.doi.org/10.1080/02640414.2019.1577119DOI Listing
February 2019
2 Reads

The effect of inspiratory muscle fatigue on acid-base status and performance during race-paced middle-distance swimming.

J Sports Sci 2019 Feb 6:1-7. Epub 2019 Feb 6.

b Faculty of Sport , University of Ljubljana , Ljubljana , Slovenia.

The aim of this study was to investigate the effect of pre-induced inspiratory muscle fatigue (IMF) on race-paced swimming and acid-base status. Twenty-one collegiate swimmers performed two discontinuous 400-m race-paced swims on separate days, with (IMF trial) and without (control trial) pre-induced IMF. Swimming characteristics, inspiratory and expiratory mouth pressures, and blood parameters were recorded. Read More

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http://dx.doi.org/10.1080/02640414.2019.1574250DOI Listing
February 2019
2 Reads

The effects of added mass on the biomechanics and performance of countermovement jumps.

J Sports Sci 2019 Feb 6:1-9. Epub 2019 Feb 6.

a Biomechanics Research Unit , University of Limerick , Limerick , Ireland.

This study examined the kinetic and temporal differences between countermovement jumps (CMJs) and eccentrically loaded CMJs. A survey of 109 coaches and athlete showed that 87% of respondents regularly used jumps with added mass within training. Sixteen male and thirteen female track and field athletes from sprinting, hurdling and jumping events performed 5 bodyweight CMJs 5 jumps wearing a weighted jacket and 5 eccentrically loaded dumbbell (LDB) jumps trials in a randomised order. Read More

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http://dx.doi.org/10.1080/02640414.2019.1577120DOI Listing
February 2019

Predicting centre of mass horizontal speed in low to severe swimming intensities with linear and non-linear models.

J Sports Sci 2019 Feb 6:1-9. Epub 2019 Feb 6.

a Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D), Faculty of Sport , University of Porto (FADE-UP) , Porto , Portugal.

We aimed to compare multilayer perceptron (MLP) neural networks, radial basis function neural networks (RBF) and linear models (LM) accuracy to predict the centre of mass (CM) horizontal speed at low-moderate, heavy and severe swimming intensities using physiological and biomechanical dataset. Ten trained male swimmers completed a 7 × 200 m front crawl protocol (0.05 m. Read More

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http://dx.doi.org/10.1080/02640414.2019.1574949DOI Listing
February 2019
2.246 Impact Factor

Neuromuscular adaptations to sixteen weeks of whole-body high-intensity interval training compared to ergometer-based interval and continuous training.

J Sports Sci 2019 Feb 6:1-9. Epub 2019 Feb 6.

a Neuromuscular Assessment Laboratory, Physical Education School , Federal University of Pelotas , Pelotas , Brazil.

The neuromuscular adaptations between ergometer-based high-intensity interval training (HIIT-T; n = 15), whole-body high-intensity interval training (HIIT-WB; n = 12) and moderate-intensity continuous training (MICT; n = 14) were compared in forty-one healthy men randomized to 16 weeks of training (3x per week). Two-way repeated measures analysis of variance (ANOVA) showed countermovement (CMJ) and squat (SJ) jump height (HIIT-T: 8.5 ± 13. Read More

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http://dx.doi.org/10.1080/02640414.2019.1576255DOI Listing
February 2019

Change-of-direction, speed and jump performance in soccer players: a comparison across different age-categories.

J Sports Sci 2019 Feb 6:1-7. Epub 2019 Feb 6.

e Centre for Exercise and Sports Science, School of Medical and Health Sciences , Edith Cowan University , Joondalup , Western Australia.

This study examined the age-specific development of vertical jump height, straight and change-of-direction (COD) speed, and COD deficit in one-hundred and eighty-two elite soccer players from different age-categories (U15, U17, U20, and Senior). All participants were players of two distinct clubs and were undertaking different training routines, as planned by their technical staff members. For this purpose, the soccer players performed: (1) squat and countermovement jumps; (2) a maximal 20-m linear sprint speed test, and (3) the Zigzag COD test. Read More

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http://dx.doi.org/10.1080/02640414.2019.1574276DOI Listing
February 2019
1 Read

Self-massage prior to stretching improves flexibility in young and middle-aged adults.

J Sports Sci 2019 Feb 4:1-8. Epub 2019 Feb 4.

a Neurophysiology of Movement Laboratory, Department of Integrative Physiology , University of Colorado , Boulder , CO , USA.

We examined the influence of stretching alone (SS) or combined with self-massage (SM) on maximal ankle dorsiflexion angle, maximal voluntary contraction (MVC) torque and calf muscle activity, and subcutaneous tissue thickness in 15 young (25 ± 3 years) and 15 middle-aged (45 ± 5 years) adults. Participants performed two sessions of calf muscle stretches (3x 30-s stretches, 30-s rest): stretch after a 60-s control condition (SS) and stretch after 60 s of self-massage with therapy balls (SM). Evaluations were performed before and 5 min after the intervention. Read More

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http://dx.doi.org/10.1080/02640414.2019.1576253DOI Listing
February 2019

Effects of detraining in age-group swimmers performance, energetics and kinematics.

J Sports Sci 2019 Feb 4:1-9. Epub 2019 Feb 4.

a Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport , University of Porto , Porto , Portugal.

Changes in performance, energetics and kinematics during age-group swimmers off-season inform the prescription of training for the following season. Age-group swimmers (n = 15, age 14.3 ± 0. Read More

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http://dx.doi.org/10.1080/02640414.2019.1572434DOI Listing
February 2019
1 Read

The role of viewing distance and viewing angle on referees' decision-making performance during the FIFA World Cup 2014.

J Sports Sci 2019 Feb 4:1-9. Epub 2019 Feb 4.

a Institute of Sport Science , University of Bern , Bern , Switzerland.

The present study aims to reveal the effects of positioning on decision-making performance in top-level refereeing in association football. To this end, for all 64 matches of the FIFA World Cup 2014, potential foul-play situations were videometrically analysed in terms of the referee's position relative to the infringement. Contrary to earlier studies, viewing angles were analysed in addition to viewing distances and error rates were considered for not only falsely whistled but also falsely non-whistled events. Read More

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http://dx.doi.org/10.1080/02640414.2019.1570898DOI Listing
February 2019

Self-reported tolerance of the intensity of exercise influences affective responses to and intentions to engage with high-intensity interval exercise.

J Sports Sci 2019 Jan 29:1-9. Epub 2019 Jan 29.

c Human Performance Science Research Group , University of Edinburgh , Scotland.

This study investigated the effect of self-reported tolerance of the intensity of exercise on affective responses to, self-efficacy for and intention to repeat low-volume high-intensity interval exercise (HIIE). Thirty-six healthy participants (mean age 21 ± 2 years) were split into high tolerance (HT; n = 19), low tolerance (LT; n = 9), and very low tolerance (VLT; n = 8) of exercise intensity groups. Participants completed 10 × 6 s cycle sprints with 60 s recovery. Read More

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http://dx.doi.org/10.1080/02640414.2019.1570590DOI Listing
January 2019

Identifying the optimal body shape and composition associated with strength outcomes in children and adolescent according to place of residence: An allometric approach.

J Sports Sci 2019 Jan 29:1-8. Epub 2019 Jan 29.

f Institute of Sport & Human Sciences , University of Wolverhampton , Wolverhampton , UK.

The purpose of the study was to identify the optimal body shape and composition associated with physical fitness levels of children living in urban and rural areas of Italy. A total of 7102 children (11-14 years) were assessed for weight, height, percentage body fat (FM%), sit-and-reach flexibility (SAR), standing broad jump (SBJ) and sit-ups (SUP). A multiplicative allometric model, Y = a · mass · height ·ε, was used to predict the physical outcome variables Y = SBJ and SUP. Read More

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http://dx.doi.org/10.1080/02640414.2018.1562615DOI Listing
January 2019

Challenges of talent development in alpine ski racing: a narrative review.

J Sports Sci 2019 Mar;37(6):601-612

a Department of Sport Science , University of Innsbruck , Innsbruck , Austria.

Alpine ski racing is one of the most popular sports in many countries; nevertheless, selection disadvantages and severe injuries result in high dropout rates. In this review we summarize existing knowledge about the specific challenges associated with selection bias and injuries, and their effects on talent development in ski racing. The relative age effect (RAE) appears in all age categories of national Austrian and international alpine ski racing. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1
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http://dx.doi.org/10.1080/02640414.2018.1513355DOI Listing
March 2019
2 Reads

The effects of sodium bicarbonate ingestion on cycling performance and acid base balance recovery in acute normobaric hypoxia.

J Sports Sci 2019 Jan 22:1-8. Epub 2019 Jan 22.

b Sports Nutrition and Performance Group, Department of Sport and Physical Activity , Edge Hill University , Ormskirk , UK.

This study investigated the effects of two separate doses of sodium bicarbonate (NaHCO) on 4 km time trial (TT) cycling performance and post-exercise acid base balance recovery in hypoxia. Fourteen club-level cyclists completed four cycling TT's, followed by a 40 min passive recovery in normobaric hypoxic conditions (FiO = 14.5%) following one of either: two doses of NaHCO (0. Read More

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http://dx.doi.org/10.1080/02640414.2019.1568173DOI Listing
January 2019

Heart rate measures from the Apple Watch, Fitbit Charge HR 2, and electrocardiogram across different exercise intensities.

J Sports Sci 2019 Jan 18:1-9. Epub 2019 Jan 18.

a Department of Health & Exercise Science , Colorado State University , Fort Collins , CO , USA.

This study compared heart rate (HR) measurements for the Fitbit Charge HR 2 (Fitbit) and the Apple Watch devices with HR measurements for electrocardiogram (ECG). Thirty young adults (15/15 females/males, age 23.5 ± 3. Read More

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http://dx.doi.org/10.1080/02640414.2018.1560644DOI Listing
January 2019

The effect of torsional shoe sole stiffness on knee moment and gross efficiency in cycling.

J Sports Sci 2019 Jan 18:1-7. Epub 2019 Jan 18.

a Faculty of Kinesiology , University of Calgary , Calgary , Canada.

Altering torsional stiffness of cycling shoe soles may be a novel approach to reducing knee joint moments and overuse injuries during cycling. We set out to determine if the magnitude of three-dimensional knee moments were different between cycling shoe soles with different torsional stiffnesses. Eight trained male cyclists cycled at 90% lactate threshold power output in one of two cycling shoe conditions in a randomized crossover design. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2019.1
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http://dx.doi.org/10.1080/02640414.2019.1565650DOI Listing
January 2019
2 Reads

Comparing the effects of low and high load resistance exercise to failure on adaptive responses to resistance exercise in young women.

J Sports Sci 2019 Jan 16:1-6. Epub 2019 Jan 16.

a Institute of Cardiovascular and Medical Sciences , University of Glasgow , Glasgow , UK.

The aim of this study was to compare the effect of 6 weeks of resistance training to volitional failure at low (30% 1 repetition maximum (RM)) or high (80%1RM) loads on gains in muscle size and strength in young women. Thirteen women (age: 29.7 ± 4. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1
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http://dx.doi.org/10.1080/02640414.2018.1559536DOI Listing
January 2019
3 Reads

Sex differences in elbow and wrist joint loading during the cartwheel and round off with different hand positions performed by young gymnasts.

J Sports Sci 2019 Jan 11:1-8. Epub 2019 Jan 11.

a Department of Human Movement Studies , University of Ostrava , Ostrava , Czech Republic.

The aim of the study was to determine if sex differences exist in the key elbow and wrist joint injury risk factors during different cartwheel (CW) and round-off (RO) techniques performed by young male and female artistic gymnasts. Sixteen active young gymnasts (8 males and 8 females) performed 30 successful trials of CW and RO with three different hand positions (parallel (10), T-shape (10) and reverse (10)). Synchronised kinematic and kinetic data were collected for each trial. Read More

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http://dx.doi.org/10.1080/02640414.2019.1565110DOI Listing
January 2019
1 Read

Impact of sports participation on mortality rates among Brazilian adults.

J Sports Sci 2019 Jan 9:1-6. Epub 2019 Jan 9.

a Faculty of Sciences and Technology , São Paulo State University (UNESP) , Presidente Prudente , Brazil.

Objective: To analyze the possible dose-response association between components of sports participation (intensity, volume and previous engagement) and 4-year mortality rates among Brazilian adults.

Methods: 679 males and females (mean age among men = 66.7 ± 9. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2019.1
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http://dx.doi.org/10.1080/02640414.2019.1565109DOI Listing
January 2019
1 Read

Goal-directed self-talk used to self-regulate in male basketball competitions.

J Sports Sci 2019 Jan 7:1-5. Epub 2019 Jan 7.

c Department of Psychology , Universitat Autònoma de Barcelona , Bellaterra , Spain.

This study examined how goal-directed self-talk may help basketball players to self-regulate in stereotypical competitive situations: seconds before a challenging game, while clearly winning or clearly losing, and at the close of a tight game. Participants were recruited in groups of three to four, until preliminary inspection of the data indicated that data saturation was reached. In the end, 34 basketball players voluntarily took part in individual interviews, writing up to three self-instructions they had used in each of the four competitive situations to self-regulate. Read More

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http://dx.doi.org/10.1080/02640414.2018.1561967DOI Listing
January 2019

Motor tests for primary school aged children: A systematic review.

J Sports Sci 2019 Jan 3:1-16. Epub 2019 Jan 3.

a Institute for Applied Educational Sciences , University of Luxembourg , Esch-sur-Alzette , Luxembourg.

Motor testing in education has gained in relevance in light of recent developments in educational systems (Köller & Baumert, 2012). The purpose of this systematic review was to identify studies using motor tests in primary school children aged 4 to 12 years and to synthetize information about the quality and application of the test instruments used. A systematic review of 910 records identified by a search of nine databases yielded 144 papers reporting motor testing in primary school age children, including 25 articles reporting on the quality of 20 test instruments. Read More

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http://dx.doi.org/10.1080/02640414.2018.1544535DOI Listing
January 2019

Physiological responses in different intensities of resistance exercise - Critical load and the effects of aging process.

J Sports Sci 2018 Dec 30:1-9. Epub 2018 Dec 30.

a Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia , Universidade Federal de São Carlos, UFSCar , São Carlos , Brazil.

Aim was to identify critical load (CL) in young and elderly apparently healthy male cohorts. To contrast the metabolic, cardiovascular and perceptual responses on CL according to age. We evaluated 12 young (23 ± 3 years) and 10 elderly (70 ± 2 years) apparently healthy active males, who underwent: (1) 1 repetition maximum (1RM) test on a 45° Leg Press; (2) on different days, three high-intensity resistance exercise constant load tests (60%, 75% and 90% 1RM) until fatigue (Tlim). Read More

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http://dx.doi.org/10.1080/02640414.2018.1561389DOI Listing
December 2018

Higher socioeconomic status is related to healthier levels of fatness and fitness already at 3 to 5 years of age: The PREFIT project.

J Sports Sci 2018 Dec 27:1-11. Epub 2018 Dec 27.

a PROFITH "PROmoting FITness and Health through physical activity" Research Group, Department of Physical and Sports Education, Faculty of Sports Science , University of Granada , Granada , Spain.

This study aimed to analyse the association between socioeconomic status (SES) and fatness and fitness in preschoolers. 2,638 preschoolers (3-5 years old; 47.2% girls) participated. Read More

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http://dx.doi.org/10.1080/02640414.2018.1558509DOI Listing
December 2018
2 Reads

Identifying profiles of children at risk of being less physically active: an exploratory study using a self-organised map approach for motor competence.

J Sports Sci 2018 Dec 25:1-9. Epub 2018 Dec 25.

c Institute of Physical Activity and Nutrition. School of Health and Social Development , Deakin University , Geelong , VIC , Australia.

This study aims to develop profiles in children according to physical fitness, actual and perceived motor competence, and to examine the level of engagement in physical activity and weight status according to these profiles. In the study, 156 typically developing Spanish children (47.4% girls) of primary school age (5-11 years-old) participated voluntarily. Read More

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http://dx.doi.org/10.1080/02640414.2018.1559491DOI Listing
December 2018

Russians are the fastest and the youngest in the "Comrades Marathon".

J Sports Sci 2018 Dec 24:1-6. Epub 2018 Dec 24.

b Medbase St. Gallen Am Vadianplatz , St. Gallen , Switzerland.

The present retrospective study intended to determine age, performance, the role of nationality and participation trends across calendar years in runners competing in "Comrades Marathon", the ultra-marathon with the longest tradition and the highest number of finishers worldwide. We analysed 235,467 finishers (40,211 women and 195,256 men) competing between 1994 and 2017. In women and men, Russians were the fastest (12. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1
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http://dx.doi.org/10.1080/02640414.2018.1559979DOI Listing
December 2018
7 Reads

A mathematical model for decision-making in the classification of para-footballers with different severity of coordination impairments.

J Sports Sci 2018 Dec 24:1-8. Epub 2018 Dec 24.

a Sport Research Centre (CID) , Miguel Hernández University , Elche , Spain.

Classification is a defining feature of Para-sport, and sports-specific classification systems determined through multidisciplinary scientific research are required, i.e., evidence-based and focused on the relationship between the impairment and the key performance determinants. Read More

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http://dx.doi.org/10.1080/02640414.2018.1560617DOI Listing
December 2018
1 Read

Association of the Functional Movement Screen™ with match-injury burden in men's community rugby union.

J Sports Sci 2018 Dec 24:1-10. Epub 2018 Dec 24.

a Department for Health , University of Bath , Bath , UK.

Evidence supporting use of the Functional Movement Screen (FMS) to identify athletes' risk of injury is equivocal. Furthermore, few studies account for exposure to risk during analysis. This study investigated the association of FMS performance with incidence and burden of match-injuries in adult community rugby players. Read More

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http://dx.doi.org/10.1080/02640414.2018.1559525DOI Listing
December 2018

Functional Movement Screen total score does not present a gestalt measure of movement quality in youth athletes.

J Sports Sci 2018 Dec 24:1-10. Epub 2018 Dec 24.

b Department of Sport, Exercise and Psychology , School of Social Sciences, Humanities and Law, Teesside University , Middlesbrough , UK.

We aimed to evaluate the internal consistency and factor structure of the Functional Movement Screen (FMS) in youth athletes and quantify differences between individual task score at different stages of maturation. FMS and anthropometric variables were measured in 144 youth athletes (96 female, 48 male). Biological maturation was categorised as before- (<-0. Read More

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http://dx.doi.org/10.1080/02640414.2018.1559980DOI Listing
December 2018

"Macro-structure" of developmental participation histories and "micro-structure" of practice of German female world-class and national-class football players.

Authors:
Arne Güllich

J Sports Sci 2018 Dec 24:1-9. Epub 2018 Dec 24.

a Department of Sport Science , University of Kaiserslautern , Kaiserslautern , Germany.

The study examined the "micro-structure" of football practice and the "macro-structure" of participation history of female professional football players. Participants were 29 German 1st league (Bundesliga) players, 14 of whom played on the senior national team (Olympic Champion in 2016). A questionnaire recorded the players' positions, proportions of physical conditioning, drill-type skill exercises and playing forms within coach-led football practice, and the volume of coach-led practice and peer-led play, in both football and other sports, from childhood to adulthood. Read More

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http://dx.doi.org/10.1080/02640414.2018.1558744DOI Listing
December 2018

A rule induction framework for the determination of representative learning design in skilled performance.

J Sports Sci 2018 Dec 21:1-6. Epub 2018 Dec 21.

a Institute for Health and Sport (IHES) , Victoria University , Melbourne , Australia.

Representative learning design provides a framework for the extent to which practice simulates key elements of a performance setting. Improving both the measurement and analysis of representative learning design would allow for the refinement of sports training environments that seek to replicate competition conditions and provide additional context to the evaluation of athlete performance. Using rule induction, this study aimed to develop working models for the determination of high frequency, representative events in Australian Rules football kicking. Read More

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http://dx.doi.org/10.1080/02640414.2018.1555905DOI Listing
December 2018

Relationships between Challenge Tour golfers' clubhead velocity and force producing capabilities during a countermovement jump and isometric mid-thigh pull.

J Sports Sci 2018 Dec 21:1-6. Epub 2018 Dec 21.

b Institute for Sport and Physical Activity Research , University of Bedfordshire , Bedford , UK.

A number of field-based investigations have evidenced practically significant relationships between clubhead velocity (CHV), vertical jump performance and maximum strength. Unfortunately, whilst these investigations provide a great deal of external validity, they are unable to ascertain vertical ground reaction force (vGRF) variables that may relate to golfers' CHVs. This investigation aimed to assess if the variance in European Challenge Tour golfers' CHVs could be predicted by countermovement jump (CMJ) positive impulse (PI), isometric mid-thigh pull (IMTP) peak force (PF) and rate of force development (RFD) from 0-50 ms, 0-100 ms, 0-150 ms and 0-200 ms. Read More

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http://dx.doi.org/10.1080/02640414.2018.1559972DOI Listing
December 2018
2 Reads

Dynamic balance performance varies by position but not by age group in elite Rugby Union players - a normative study.

J Sports Sci 2018 Dec 20:1-6. Epub 2018 Dec 20.

a Insight Centre for Data Analytics , University College Dublin , Dublin , Ireland.

This cohort study aimed to provide normative Y Balance Test scores for an elite Rugby Union population, while investigating the effect player age groups (senior/under-20), playing positions (forwards/backs) and anthropometrics (height and body mass) had on performance.  Two-hundred and sixty-one elite male under-20 (n = 50) and senior (n = 211) players completed baseline Y Balance Test during the 2015/2016 season. One-way ANCOVA and post-hoc t-tests were used to investigate the effect playing position, player group, height and weight had on performance. Read More

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http://dx.doi.org/10.1080/02640414.2018.1557360DOI Listing
December 2018

Twelve weeks of low volume sprint interval training improves cardio-metabolic health outcomes in overweight females.

J Sports Sci 2018 Dec 18:1-8. Epub 2018 Dec 18.

d School of Physical Education and Sports , Macao Polytechnic Institute , Macao , China.

This study compared the effects of 12-week sprint interval training (SIT), high-intensity interval training (HIIT), and moderate-intensity continuous training (MICT) on cardiorespiratory fitness (V̇O), body mass and insulin sensitivity in overweight females. Forty-two overweight women (age 21.2 ± 1. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1
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http://dx.doi.org/10.1080/02640414.2018.1554615DOI Listing
December 2018
4 Reads

The influence of short-term fixture congestion on position specific match running performance and external loading patterns in English professional soccer.

J Sports Sci 2018 Dec 18:1-9. Epub 2018 Dec 18.

b Sports Injuries Research Group, Department of Sport & Physical Activity , Edge Hill University , Ormskirk , UK.

The aim of the current study was to investigate positional specific physical performance and external load responses to short term fixture congestion in English professional soccer. A total of 515 match observations were categorised as G1: the first game in a week with >4 days following a previous game, G2: the second game in a week played <4 days since G1, and G3: the third game in a week played with <4 days between each of the previous games. Global positioning system and accelerometer-based metrics were partitioned into fifteen-minute epochs. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1
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http://dx.doi.org/10.1080/02640414.2018.1558563DOI Listing
December 2018
3 Reads

How many times per week should a muscle be trained to maximize muscle hypertrophy? A systematic review and meta-analysis of studies examining the effects of resistance training frequency.

J Sports Sci 2018 Dec 17:1-10. Epub 2018 Dec 17.

c Weightology, LLC , Redmond , WA , USA.

Training frequency is considered an important variable in the hypertrophic response to regimented resistance exercise. The purpose of this paper was to conduct a systematic review and meta-analysis of experimental studies designed to investigate the effects of weekly training frequency on hypertrophic adaptations. Following a systematic search of PubMed/MEDLINE, Scoups, and SPORTDiscus databases, a total of 25 studies were deemed to meet inclusion criteria. Read More

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http://dx.doi.org/10.1080/02640414.2018.1555906DOI Listing
December 2018

Influence of wheel rim width on rolling resistance and off-road speed in cross-country mountain biking.

J Sports Sci 2019 Apr 18;37(7):833-838. Epub 2018 Dec 18.

a Section for Elite Sport , Swiss Federal Institute of Sport , Magglingen , Switzerland.

The rim width of cross-country mountain bike wheel sets has increased in recent years, but the effect of this increase on performance remains unknown. The aim of this study was to analyse the influence of rim width on rolling resistance and off-road speed. We compared 3 tubeless wheel sets: 25 mm inner width as baseline, 30 mm width with the same tyre stiffness, and 30 mm width with the same tyre pressure. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1
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http://dx.doi.org/10.1080/02640414.2018.1530057DOI Listing
April 2019
7 Reads

Evaluation of wrist and hip sedentary behaviour and moderate-to-vigorous physical activity raw acceleration cutpoints in older adults.

J Sports Sci 2018 Dec 17:1-10. Epub 2018 Dec 17.

a Physical Activity and Health Research Group, Department of Sport and Physical Activity , Edge Hill University , Ormskirk , UK.

Wrist-based accelerometers are now common in assessing physical activity (PA) and sedentary behaviour (SB) in population-based studies, but there is a scarcity of raw acceleration cutpoints in older adults. The study aimed to determine and evaluate wrist-based GENEActiv (GA) and hip-based ActiGraph GT3X+ (AG) raw acceleration cutpoints for SB and moderate-to-vigorous PA (MVPA) in older adults ≥60 years of age. A laboratory-based calibration analyses of 34 healthy older adults involved receiver operator characteristic (ROC) curves to determine raw acceleration cutpoints for SB and MVPA. Read More

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https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1
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http://dx.doi.org/10.1080/02640414.2018.1555904DOI Listing
December 2018
6 Reads

Sex and acute weighted vest differences in force production and joint work during countermovement vertical jumping.

J Sports Sci 2018 Dec 17:1-9. Epub 2018 Dec 17.

c School of Health Studies , The University of Memphis , Memphis , TN , USA.

It is unclear whether weighted vest (WV) use improves countermovement vertical jump (CMVJ) performance by enhancing stretch-shortening cycle (SSC) function via increased storage and utilisation of elastic strain energy. In is also unknown whether WV use stimulates different responses in men and women. WV effects on energy storage and utilisation during CMVJ were examined in men and women. Read More

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http://dx.doi.org/10.1080/02640414.2018.1557825DOI Listing
December 2018

Physical profiles of elite, sub-elite, regional and age-group netballers.

J Sports Sci 2018 Dec 17:1-8. Epub 2018 Dec 17.

c School of Exercise and Nutrition Sciences , Queensland University of Technology , Brisbane , Australia.

Physical profile data from elite, sub-elite, regional, under 21s (U21), under 19s (U19) and under 17s (U17) (n = 845) players from a state netball association in Australia were analysed. Within season changes were examined for the elite and sub-elite players. Longitudinal changes were examined for the elite across four consecutive netball seasons. Read More

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http://dx.doi.org/10.1080/02640414.2018.1553269DOI Listing
December 2018

The effects of 4 weeks normobaric hypoxia training on microvascular responses in the forearm flexor.

J Sports Sci 2018 Dec 17:1-7. Epub 2018 Dec 17.

e Department of Sport and Exercise , University of North Carolina , Chapel Hill , NC , USA.

Intermittent exposure to hypoxia can lead to improved endurance performance. Currently, it is unclear whether peripheral adaptions play a role in improving oxygen delivery and utilization following both training and detraining. This study aimed to characterize skeletal muscle blood flow (mBF), oxygen consumption (mV̇O), and perfusion adaptations to i) 4-weeks handgrip training in hypoxic and normoxic conditions, and ii) following 4-weeks detraining. Read More

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http://dx.doi.org/10.1080/02640414.2018.1554177DOI Listing
December 2018

Peak oxygen uptake measured during a perceptually-regulated exercise test is reliable in community-based manual wheelchair users.

J Sports Sci 2019 Mar 14;37(6):701-707. Epub 2018 Dec 14.

a The Peter Harrison Centre for Disability Sport, School for Sport, Exercise and Health Sciences , Loughborough University , Loughborough , UK.

This study compares test-retest reliability and peak exercise responses from ramp-incremented (RAMP) and maximal perceptually-regulated (PRET) exercise tests during arm crank exercise in individuals reliant on manual wheelchair propulsion (MWP). Ten untrained participants completed four trials over 2-weeks (two RAMP (0-40 W + 5-10 W · min) trials and two PRET. PRET consisted of five, 2-min stages performed at Ratings of Perceived Exertion (RPE) 11, 13, 15, 17 and 20). Read More

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http://dx.doi.org/10.1080/02640414.2018.1522941DOI Listing