392 results match your criteria maximal adduction

Effects of Laryngeal Vibratory Asymmetry and Neuromuscular Compensation on Voice Quality.

Laryngoscope 2021 Jul 3. Epub 2021 Jul 3.

Department of Head and Neck Surgery, University of California Los Angeles, Los Angeles, California, U.S.A.

Introduction: Vibratory asymmetry and neuromuscular compensation are often seen in laryngeal neuromuscular pathology. However, the ramifications of these findings on voice quality are unclear. This study investigated the effects of varying levels of vibratory asymmetry and neuromuscular compensation on cepstral peak prominence (CPP), an analog of voice quality. Read More

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Strain patterns in normal anterior talofibular and calcaneofibular ligaments and after anatomical reconstruction using gracilis tendon grafts: A cadaver study.

BMC Musculoskelet Disord 2021 Jun 18;22(1):558. Epub 2021 Jun 18.

Division of Orthopaedic Surgery, Dalhousie University, Queen Elizabeth II Health Sciences Center Halifax Infirmary (Suite 4867), 1796 Summer Street, Halifax, NS, B3H3A7, Canada.

Background: Inversion ankle sprains, or lateral ankle sprains, often result in symptomatic lateral ankle instability, and some patients need lateral ankle ligament reconstruction to reduce pain, improve function, and prevent subsequent injuries. Although anatomically reconstructed ligaments should behave in a biomechanically normal manner, previous studies have not measured the strain patterns of the anterior talofibular ligament (ATFL) and calcaneofibular ligament (CFL) after anatomical reconstruction. This study aimed to measure the strain patterns of normal and reconstructed ATFL and CFLs using the miniaturization ligament performance probe (MLPP) system. Read More

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Reliability of hip muscle strength measured in principal and intermediate planes of movement.

PeerJ 2021 2;9:e11521. Epub 2021 Jun 2.

School of Health Sciences and Social Work, Griffith University, Gold Coast, Queensland, Australia.

Background: Muscle strength testing is widely used in clinical and athletic populations. Commercially available dynamometers are designed to assess strength in three principal planes (sagittal, transverse, frontal). However, the anatomy of the hip suggests muscles may only be recruited submaximally during tasks performed in these principal planes. Read More

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Maximal hip muscle strength and rate of torque development 6-30 months after hip arthroscopy for femoroacetabular impingement syndrome: A cross-sectional study.

J Sci Med Sport 2021 May 18. Epub 2021 May 18.

Sports Orthopedic Research Center - Copenhagen (SORC-C), Department of Orthopedic Surgery, Copenhagen University Hospital, Denmark.

Objectives: Reduced sports function is often observed after hip arthroscopy for femoroacetabular impingement syndrome (FAIS). Impaired muscle strength could be reasons for this. We aimed to investigate hip muscle strength after hip arthroscopy for FAIS and its association with sports function and participation. Read More

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Neural control of the healthy pectoralis major from low-to-moderate isometric contractions.

J Neurophysiol 2021 Jul 9;126(1):213-226. Epub 2021 Jun 9.

Department of Kinesiology, grid.46078.3dUniversity of Waterloo, Waterloo, Ontario, Canada.

The pectoralis major critically enables arm movement in several directions. However, its neural control remains unknown. High-density electromyography (HD-sEMG) was acquired from the pectoralis major in two sets of experiments in healthy young adults. Read More

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Age and sex influence the activation-dependent stiffness of the pectoralis major.

J Anat 2021 Aug 19;239(2):479-488. Epub 2021 May 19.

School of Kinesiology, University of Michigan, Ann Arbor, MI, USA.

The pectoralis major fiber regions contribute uniquely to the mobility and the stability of the shoulder complex. It is unknown how age and sex influence the stiffness of these regions during volitional contractions, but this knowledge is critical to inform clinical interventions targeting the pectoralis major. The aim of the present study was to determine if the activation-dependent stiffness of the pectoralis major fiber regions differs between the sexes and if it is altered with age. Read More

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Patellar mobility and lower limb kinematics during functional activities in individuals with and without patellar tendinopathy.

Knee 2021 Jun 3;30:241-248. Epub 2021 May 3.

Department of Orthopaedic Surgery, University of California, San Francisco, Orthopaedic Institute, 1500 Owens St., San Francisco, CA 94158, USA. Electronic address:

Study Design: Case-control.

Objective: To examine whether patients with patellar tendinopathy (PT) display greater patellar mobility and different lower body kinematics than patients without PT.

Background: PT is a common overuse condition of the patellar tendon that can cause pain and impair function. Read More

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The Effects of Internal Attention on Knee Biomechanics in Volleyball Spike Jump through Augmented Video Feedback.

Brain Sci 2021 Apr 25;11(5). Epub 2021 Apr 25.

Faculty of Sport Science, Research Academy of Grand Health, Ningbo University, Ningbo 315211, China.

Poor knee biomechanics in a volleyball spike jump generally result in a higher knee injury risk, which can be altered by an internal focus of attention (FOA). The constrained action hypothesis (CAH) purports that the FOA inhibits sports performance whereas no ecologically valid evidence has been found in previous studies. The purpose of this research is to explore the effect of video feedback on knee biomechanics in a volleyball spike jump including landing and take-off phases. Read More

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Concurrent Validation and Reference Values of Gluteus Medius Clinical Test.

Int J Sports Phys Ther 2021 Apr 1;16(2):335-341. Epub 2021 Apr 1.

Head of the Physical Therapy Department, Minas Tenis Clube.

Context: The hip abductor muscles, mainly the gluteus medius, are responsible for controlling hip adduction in a closed kinetic chain. Frontal plane knee alignment, assessed during functional activities such squatting, jumping and running, may overload joint structures, like the anterior cruciate ligament and patellofemoral joint. The hand-held dynamometer is reliable and effective for testing the muscular strength of the hip abductors. Read More

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Effect of Acupuncture on the Timeliness of Explosive Forces Generated by the Male Shoulder Joint.

Evid Based Complement Alternat Med 2021 15;2021:5585605. Epub 2021 Mar 15.

Division of Physical Medicine and Rehabilitation, Lo-Hsu Medical Foundation, Inc., Lotung Poh-Ai Hospital, Yilan 26546, Taiwan.

Athletes aim to improve muscle strength to optimize sports performance and gain a competitive edge. Although modern sports medicine includes rehabilitation treatment methods for improving the explosive force of athletes, including acupuncture, a common alternative therapy, research on the effectiveness of acupuncture in improving the timeliness of explosive forces is limited. There is uncertainty regarding how long the effects of acupuncture treatment persist after treatment. Read More

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Submaximal Elastic Resistance Band Tests to Estimate Upper and Lower Extremity Maximal Muscle Strength.

Int J Environ Res Public Health 2021 03 9;18(5). Epub 2021 Mar 9.

National Research Centre for the Working Environment, DK-2100 Copenhagen, Denmark.

Muscle strength assessment is fundamental to track the progress of performance and prescribe correct exercise intensity. In field settings, simple tests are preferred. This study develops equations to estimate maximal muscle strength in upper- and lower-extremity muscles based on submaximal elastic resistance tests. Read More

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Impact of Power Output on Muscle Activation and 3D Kinematics During an Incremental Test to Exhaustion in Professional Cyclists.

Front Sports Act Living 2020 10;2:516911. Epub 2021 Mar 10.

M2S Laboratory (Movement, Sports & Health), University Rennes 2, ENS Rennes, Bruz, France.

This study aimed to quantify the influence of an increase in power output (PO) on joint kinematics and electromyographic (EMG) activity during an incremental test to exhaustion for a population of professional cyclists. The hip flexion/extension and internal/external rotation as well as knee abduction/adduction ranges of motion were significantly decreased at 100% of the maximal aerobic power (MAP). EMG analysis revealed a significant increase in the root mean square (RMS) for all muscles from 70% of the MAP. Read More

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Effect of posture and femoral neck osteochondroplasty on femur-acetabulum clearance in patients with cam-type femoroacetabular impingement.

J Orthop Res 2021 Mar 18. Epub 2021 Mar 18.

Department of Orthopaedics, The University of British Columbia, Vancouver, British Columbia, Canada.

It is not clear whether femoral neck osteochondroplasty achieves its objective of increasing femoroacetabular clearance. We used an upright open magnetic resonance imaging scanner to image the hip joint in multiple postures to explore the effect of posture and femoral neck osteochondroplasty on femur-acetabulum clearance in patients with cam-type femoroacetabular impingement. We recruited 13 consecutive patients scheduled to undergo arthroscopic femoral neck osteochondroplasty and completed assessments on 10 patients. Read More

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Surgical strategy for third nerve palsy with aberrant regeneration: Harnessing the aberrant power.

Indian J Ophthalmol 2021 04;69(4):910-917

Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India; Lions Sight First Eye Hospital, Nairobi, Kenya.

Purpose: Our study aimed to evaluate the outcome of contralateral eye (CE) fixation duress squint surgery (FDSS) in third nerve palsy (3 NP) with aberrant regeneration and compare the postoperative ptosis correction with preoperative ptosis improvement on adduction.

Methods: Patients of 3 NP with aberrant regeneration who underwent CE FDSS between December 2012-July 2015 in a tertiary-care eye hospital with a follow-up period of 1-year were retrospectively studied to analyze preoperative and postoperative details. Surgical success was defined as the correction of ptosis within 1 mm of preoperative ptosis improvement during maximal adduction of the affected eye, postoperative alignment ≤10Δ, and resolution of subjective diplopia in primary position. Read More

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Pain sensitivity and shoulder function among breast cancer survivors compared to matched controls: a case-control study.

J Cancer Surviv 2021 Jan 26. Epub 2021 Jan 26.

Sport Sciences - Performance and Technology, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark.

Objective: Persistent pain and loss of shoulder function are common adverse effects to breast cancer treatment, but the extent of these issues in comparison with healthy controls is unclear for survivors beyond 1.5 years after treatment. The purpose of this study was to benchmark differences in pressure pain thresholds (PPT), maximal isokinetic muscle strength (MIMS), and active range of motion (ROM) of females with persistent pain ≥1. Read More

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January 2021

Test Re-test Reliability of Single and Multijoint Strength Properties in Female Australian Footballers.

Sports Med Open 2021 Jan 9;7(1). Epub 2021 Jan 9.

School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia.

Purpose: To examine the test re-test reliability of isometric maximal voluntary contractions (MVC) of hip adduction (ADD), hip abduction (ABD), and multijoint leg extension (SQUAT) in sub-elite female Australian footballers.

Methods: Data were collected from 24 sub-elite female Australian footballers (age 22.6 ± 4. Read More

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January 2021

Hypertrophic Cardiomyopathy as an Unexpected Mimic of Inducible Laryngeal Obstruction: The Case for Cardiopulmonary Exercise Testing in Otolaryngology.

J Voice 2020 Dec 30. Epub 2020 Dec 30.

Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts.

Introduction: Inducible laryngeal obstruction is a common and challenging cause of exertional dyspnea. We report a case of an unanticipated cardiac condition that presented with symptoms suggestive of inducible laryngeal obstruction.

Discussion: A 55-year-old man was evaluated for progressive exertional dyspnea and throat tightness, unexplained after multiple medical evaluations. Read More

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December 2020

Kinetic analysis of the wrist and fingers during fastball and curveball pitches.

Eur J Sport Sci 2021 Jan 18:1-10. Epub 2021 Jan 18.

Japan Women's College of Physical Education, Tokyo, Japan.

This study had two objectives: (a) revealing kinetic parameter differences at the fingers during a fastball and curveball, and (b) examining timing control between the wrist and finger torques. The participants were eight baseball pitchers. The kinetics of the wrist and fingers were calculated using an inverse dynamics method. Read More

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January 2021

Standard bipolar surface EMG estimations mischaracterize pectoralis major activity in commonly performed tasks.

J Electromyogr Kinesiol 2021 Feb 5;56:102509. Epub 2020 Dec 5.

Department of Kinesiology, University of Waterloo, Waterloo, Canada. Electronic address:

The pectoralis major assists in several shoulder movements, such as humeral vertical and horizontal adduction, flexion, extension, and internal rotation. Despite its involvement in numerous functional activities, its role in typical shoulder function is ambiguous. Due to this, its purpose in arm movement is largely diminished. Read More

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February 2021

Influence of the forehand stance on knee biomechanics: Implications for potential injury risks in tennis players.

J Sports Sci 2021 May 6;39(9):992-1000. Epub 2020 Dec 6.

M2S Laboratory, Rennes 2 University, Rennes, France.

The open stance forehand has been hypothesized to be more traumatic for knee injuries in tennis than the neutral stance forehand. This study aims to compare kinematics and kinetics at the knee during three common forehand stroke stances (attacking neutral stance ANS, attacking open stance AOS, defensive open stance DOS) to determine if the open stance forehand induces higher knee loadings and to discuss its potential relationship with given injuries. Eight advanced tennis players performed eight repetitions of forehand strokes with each stance (ANS: forward run and stroke with feet parallel with the hitting direction, AOS: forward run and stroke with feet perpendicular to the hitting direction, DOS: lateral run and stroke with feet perpendicular to the hitting direction) at maximal effort. Read More

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Comparing walking biomechanics of older females in maximal, minimal, and traditional shoes.

Gait Posture 2021 01 2;83:245-249. Epub 2020 Nov 2.

Program in Physical Therapy, Oregon State University - Cascades, Bend, Oregon, USA; School of Biological and Population Health Sciences, Oregon State University, Corvallis, Oregon, USA.

Background: Knee osteoarthritis (OA) is a degenerative joint disease that affects millions of individuals each year. Several biomechanical variables during walking have been identified as risk factors for developing knee OA, including the peak external knee adduction moment (KAM) and the knee flexion angle at initial contact. Many interventions have been studied to help mitigate these risk factors, including footwear. Read More

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January 2021

Association Between Knee- and Hip-Extensor Strength and Running-Related Injury Biomechanics in Collegiate Distance Runners.

J Athl Train 2020 Dec;55(12):1262-1269

Department of Kinesiology, California State University, Fullerton.

Context: Running-related injuries are common in distance runners. Strength training is used for performance enhancement and injury prevention. However, the association between maximal strength and distance-running biomechanics is unclear. Read More

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December 2020

Sex-dependent differences in single-leg squat kinematics and their relationship to squat depth in physically active individuals.

Sci Rep 2020 11 11;10(1):19601. Epub 2020 Nov 11.

Department of Sports Medicine, Faculty of Health Sciences, Medical University of Lublin, Chodzki 7, 20-093, Lublin, Poland.

The purpose of this study is to compare recreationally physically active females and males with regard to spine, pelvis and lower limb joints peak angles in each plane of motion during a single leg squat (SLS). The second aim is to investigate the relationship between kinematics and SLS depth in females and males. Fifty-eight healthy, young adults performed 5 repetitions of a single right leg squat to maximal depth while keeping their balance. Read More

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November 2020

Arm mobilization provokes deformity of long-term indwelling ports implanted via the jugular vein.

J Vasc Surg Venous Lymphat Disord 2021 Jul 31;9(4):998-1006. Epub 2020 Oct 31.

Vascular Surgery Department, Hospital Israelita Albert Einstein, São Paulo, Brazil.

Background: The incidence of totally implantable catheter fracture ranges from 0.48% to 5.00%, and these fractures represent a potentially fatal complication. Read More

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The relationships between pelvic range of motion, step width and performance during an athletic sprint start.

J Sports Sci 2020 Oct 17;38(19):2200-2207. Epub 2020 Jun 17.

GIH, Swedish School of Sport and Health Sciences , Stockholm, Sweden.

The aims of this study were (a) to describe the kinematics underlying the phenomenon of the knee of the swing leg passing medially in front of the athlete during the single push (SP) phase of the block sprint start, and (b) to determine the relationships between block phase pelvis range of motion (RoM), 1 step width and block phase performance. Three-dimensional kinematic data (250 Hz) were collected from eleven competitive sprinters (100 m PB: 11.17 ± 0. Read More

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October 2020

Kinematics following gait perturbation in adults with knee osteoarthritis: Scheduled versus not scheduled for knee arthroplasty.

Gait Posture 2020 09 22;81:144-152. Epub 2020 Jul 22.

Department of Occupational Therapy, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. Electronic address:

Objective: To compare recovery kinematics following trip-simulated perturbation during gait between three groups: adults without knee Osteoarthritis (OA) and adults with OA, scheduled and not scheduled for Total Knee Replacement (TKR).

Methods: People with OA scheduled for TKR (TKR group; N = 19) and not scheduled (NTKR group; N = 17) were age-matched with People without OA (N = 19). Outcome measures included: joint range of motion (ROM), Timed Up and Go (TUG), joint pain levels, Oxford score, Instrumental Activities of Daily Living Questionnaire, and the Activities-specific Balance Confidence Scale. Read More

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September 2020

Weak associations between hip adduction angle and hip abductor muscle activity during running.

J Biomech 2020 09 18;110:109965. Epub 2020 Jul 18.

Department of Physical Therapy & Rehabilitation Sciences, Drexel University, Philadelphia, PA, USA.

Hip abductor muscle strengthening is often prescribed to reduce the peak hip adduction angle in runners with overuse knee injury. However, no evidence exists associating greater isometric hip abductor muscle strength with smaller peak hip adduction angle during running. Beyond muscle strength, muscle activation patterns may play an important role in controlling joint movement during running. Read More

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September 2020

Motor control integrated into muscle strengthening exercises has more effects on scapular muscle activities and joint range of motion before initiation of radiotherapy in oral cancer survivors with neck dissection: A randomized controlled trial.

PLoS One 2020 6;15(8):e0237133. Epub 2020 Aug 6.

School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan.

Background: Accessory nerve shoulder dysfunction is common after neck dissection in oral cancer survivors. This study aimed to investigate the short-term effects of scapular muscle strengthening exercises with motor-control techniques on neck dissection-related shoulder dysfunction in oral cancer survivors before the initiation of radiotherapy.

Methods: Thirty-eight participants were randomly allocated into the motor-control and regular-exercise groups. Read More

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October 2020

Biomechanical loading of the porcine femorotibial joint during maximal movements: An exploratory, ex vivo study.

Vet J 2020 Jul 3;261:105480. Epub 2020 Jun 3.

Orthopaedic Research Laboratory, Radboud University Medical Center, Geert Grooteplein Zuid 10, NL-6525 GA Nijmegen, The Netherlands; Department of Biomechanical Engineering, Faculty of Engineering Technology, University of Twente, 7500 AE Enschede, The Netherlands.

Thus far, there is a lack of scientific investigation regarding the hypothesis that biomechanical factors contribute to the cross-species pathogenesis of osteochondrosis (OC). Therefore, the aim of this pilot study was to investigate whether high (peak) pressures occur in the porcine femorotibial (FT) joint. In this experimental, ex vivo study, the right hind limbs of seven weaned piglets were subjected to maximal joint excursions, as a priori radiologically estimated. Read More

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Immediate effects of valgus bracing on knee joint moments during walking in knee-healthy individuals: Potential modifying effects of body height.

Gait Posture 2020 07 27;80:383-390. Epub 2020 Jun 27.

Research Health Institute, University of the Sunshine Coast, Sunshine Coast, Australia. Electronic address:

Background: The goal of valgus knee brace treatment is to reduce medial knee joint loading during walking, often indicated by external knee adduction moment (KAM) measures. However, existing healthy-subjects studies have been equivocal in demonstrating KAM reduction with valgus knee bracing.

Research Question: What are the immediate effects of valgus bracing at different tension levels on KAM during walking at a controlled speed and does body height modify the brace-KAM associations?

Methods: Data from 32 knee-healthy participants were analysed in this randomized crossover trial. Read More

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