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hamstring muscle flexibility

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https://www.readbyqxmd.com/read/29124077/can-a-clinical-examination-demonstrate-intramuscular-tendon-involvement-in-acute-hamstring-injuries
#1
Michel D Crema, Ali Guermazi, Gustaaf Reurink, Frank W Roemer, Mario Maas, Adam Weir, Maarten H Moen, Gert J Goudswaard, Johannes L Tol
Background: Involvement of the intramuscular (central) tendon in acute hamstring injuries, as detected on magnetic resonance imaging (MRI), may prolong recovery times. To date, it is unclear whether hamstring injuries exhibiting intramuscular tendon involvement can be identified though routine clinical examinations that assess flexibility and strength. Purpose: To test whether MRI-detected intramuscular tendon involvement could be identified by a clinical assessment of muscle strength and flexibility...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29114505/examining-and-comparing-the-health-and-performance-indices-of-university-undergraduate-students-according-to-year-of-study-and-gender
#2
Monday Omoniyi Moses, Francis Osei, Eric Juniour Appiah, Agnes Obour, Lady Gwendoline Akwa, Biggie Baffour-Awuah, Benjamin Asamoah, Peter Akwasi Sarpong, Caleb Adams, Rosario D'Onofrio
This study examined and compared, based on year of study and gender, the health and performance indices of university undergraduate students. Eighty-nine students (mean±standard deviation age, 22.47±2.22 years) were randomly selected for assessment prior to second semester examination of 2015/2016 academic year. body mass index, resting metabolic rate, visceral fat, skeletal muscle mass, body fat, systolic & diastolic blood pressure, resting heart rate, upper & lower body endurance, handgrip strength, and lower back and hamstring flexibility were assessed...
August 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29072027/effect-of-stretching-based-rehabilitation-on-pain-flexibility-and-muscle-strength-in-dancers-with-hamstring-injury-a-single-blind-prospective-randomized-clinical-trial
#3
Giwon Kim, Hyangsun Kim, Woo K Kim, Junesun Kim
BACKGROUND: Hamstring injuries commonly occur in mainstream sports and occupations that involve physical activity. We evaluated the effect of a stretching-based rehabilitation program on pain, flexibility, and strength in dancers with hamstring injuries. METHODS: Sixteen Korean traditional dancers with unilateral hamstring injuries were included and randomly assigned to a rehabilitation or control group. The rehabilitation group received stretching-based rehabilitation for 8 weeks, which comprised simple static stretches and basic range of motion (ROM) exercises, such as static and active stretching, concentric and eccentric ROM training, and trunk stabilization exercises...
October 24, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29054803/comparison-of-short-term-effects-of-mobilization-with-movement-and-kinesiotaping-on-pain-function-and-balance-in-patellofemoral-pain
#4
Serdar Demirci, Gizem Irem Kinikli, Michael J Callaghan, Volga Bayrakci Tunay
OBJECTIVE: The aim of this study was to compare the short-term effects of Mobilization with movement (MWM) and Kinesiotaping (KT) on patients with patellofemoral pain (PFP) respect to pain, function and balance. METHODS: Thirty-five female patients diagnosed with unilateral PFP were assigned into 2 groups. The first group (n = 18) received two techniques of MWM intervention (Straight Leg-Raise with Traction and Tibial Gliding) while KT was applied to the other group (n = 17)...
October 17, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29032593/association-analysis-of-the-actn3-r577x-polymorphism-with-passive-muscle-stiffness-and-muscle-strain-injury
#5
Naokazu Miyamoto, Eri Miyamoto-Mikami, Kosuke Hirata, Noriko Kimura, Noriyuki Fuku
Passive muscle stiffness is considered to be a major factor affecting joint flexibility and is thought to relate to the occurrence of muscle strain injury. In skinned muscle fiber experiments, the R577X polymorphism of the α-actinin-3 gene (ACTN3) has been associated with passive muscle stiffness. Our primary purpose was to clarify whether the ACTN3 R577X polymorphism influences passive stiffness of human muscle in vivo. We also examined whether the ACTN3 R577X polymorphism is associated with the occurrence of hamstring strain injury...
October 15, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29019743/injury-prevention-in-male-youth-soccer-current-practices-and-perceptions-of-practitioners-working-at-elite-english-academies
#6
Paul J Read, Pablo Jimenez, Jon L Oliver, Rhodri S Lloyd
Forty-one practitioners inclusive of physiotherapists, sports scientists and strength and conditioning coaches from the academies of elite soccer clubs in the United Kingdom completed an on-line questionnaire which examined their: (1) background information; (2) perceptions of injury occurrence and risk factors; (3) screening and return to play; and (4) approach to designing and delivering injury prevention programmes with a response rate of 55% (41/75). Contact injuries were the most common mechanism reported and players between 13-16 years of age were perceived to be at the greatest risk...
October 11, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29016479/the-effects-of-foam-rolling-as-a-recovery-tool-in-professional-soccer-players
#7
Ezequiel Rey, Alexis Padrón-Cabo, Pablo B Costa, Roberto Barcala-Furelos
Foam rolling (FR) is a common strategy used after training and competition by players. However, no previous studies have assessed the effectiveness of FR as recovery tool in sports populations. The aim of this study was to examine the effectiveness of FR (20 minutes of foam rolling exercises on quadriceps, hamstrings, adductors, gluteals, and gastrocnemius) and passive recovery (20 minutes sit on a bench) interventions performed immediately after a training session on Total Quality Recovery (TQR), perceived muscle soreness, jump performance, agility, sprint, and flexibility 24 hours after the training...
October 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28884093/hamstring-injuries-update-article
#8
Lucio Ernlund, Lucas de Almeida Vieira
Hamstring (HS) muscle injuries are the most common injury in sports. They are correlated to long rehabilitations and have a great tendency to recur. The HS consist of the long head of the biceps femoris, semitendinosus, and semimembranosus. The patient's clinical presentation depends on the characteristics of the lesion, which may vary from strain to avulsions of the proximal insertion. The most recognized risk factor is a previous injury. Magnetic resonance imaging is the method of choice for the injury diagnosis and classification...
June 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28759535/relationship-between-physical-fitness-at-the-end-of-pre-season-and-the-in-season-game-performance-in-japanese-female-professional-baseball-players
#9
Yuya Watanabe, Yosuke Yamada, Tsukasa Yoshida, Tomoyuki Matsui, Kazuya Seo, Yoshikazu Azuma, Machiko Hiramoto, Yuichiro Miura, Hideaki Fukushima, Akito Shimazu, Toshiaki Eto, Homare Saotome, Noriyuki Kida, Toru Morihara
This study examined anthropometric and fitness profiles of Japanese female professional baseball players and investigated the relationship between players' physical fitness and in-season game performance. Fifty-seven players who were registered in the Japan Women's Baseball League (JWBL) participated. Height, weight, grip strength, back strength, knee-extension and -flexion strength, hamstring extensibility, vertical jump height, and horizontal jump distance were measured at pre-season (February and March) in 2013...
July 28, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28647867/the-effects-of-4-weeks-stretching-training-to-the-point-of-pain-on-flexibility-and-muscle-tendon-unit-properties
#10
Pornpimol Muanjai, David A Jones, Mantas Mickevicius, Danguole Satkunskiene, Audrius Snieckus, Renata Rutkauskaite, Dalia Mickeviciene, Sigitas Kamandulis
PURPOSE: The purpose of this study was to compare the benefits and possible problems of 4 weeks stretching when taken to the point of pain (POP) and to the point of discomfort (POD). METHODS: Twenty-six physically active women (20 ± 1.1 years) took part in group-based stretching classes of the hamstring muscles, 4 times per week for 4 weeks, one group one stretching to POD, the other to POP. Passive stiffness, joint range of motion (ROM), maximal isometric torque and concentric knee flexion torque, were measured before training and 2 days after the last training session...
August 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28507370/a-comparative-study-of-dynamic-soft-tissue-mobilization-vs-passive-stretching-technique-to-improve-the-flexibility-of-hamstrings-in-cricket-players
#11
Mohsin Abbas, Muhammad Salman Bashir, Rabiya Noor
Different therapies are available for correcting the tightness of hamstring muscles. Objective of this study was to compare the effectiveness of Dynamic Soft Tissue Mobilization DSTM technique and Passive Stretching PS to improve the flexibility of tight hamstrings in cricket players. A total of 120 cricket players having tightness of hamstrings were enrolled and randomized into two groups A and B using lottery method. Group-A was treated with DSTM and group-B with PS to improve the flexibility of hamstrings...
May 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28487221/neurophysiological-insights-on-flexibility-improvements-through-motor-imagery
#12
Thiago Ferreira Dias Kanthack, Aymeric Guillot, Charalambos Papaxanthis, Théophile Guizard, Christian Collet, Franck Di Rienzo
The efficacy of motor imagery (MI) practice to facilitate muscle stretching remains controversial and the underlying neurophysiological mechanisms unexplored. We evaluated the effects of MI practice during a sit-and-reach task. Healthy participants were randomly assigned to a MI practice (n=15) or Control (n=15) group and completed 2 blocks of 5 sit-and-reach trials. During the first block (B1), participants performed 5 maximal stretching trials of 10s. During the second block (B2), trials were divided into two consecutive parts: i) reproducing the maximum performance of B1 (10s, B2 part 1), and ii) attempting to outperform the maximum performance of B1 (10s, B2 part 2)...
May 6, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28476110/restriction-in-lateral-bending-range-of-motion-lumbar-lordosis-and-hamstring-flexibility-predicts-the-development-of-low-back-pain-a-systematic-review-of-prospective-cohort-studies
#13
Sean G Sadler, Martin J Spink, Alan Ho, Xanne Janse De Jonge, Vivienne H Chuter
BACKGROUND: Low back pain (LBP) is an increasingly common condition worldwide with significant costs associated with its management. Identification of musculoskeletal risk factors that can be treated clinically before the development of LBP could reduce costs and improve the quality of life of individuals. Therefore the aim was to systematically review prospective cohort studies investigating lower back and / or lower limb musculoskeletal risk factors in the development of LBP. METHODS: MEDLINE, EMBASE, AMED, CINAHL, SPORTDiscus, and the Cochrane Library were searched from inception to February 2016...
May 5, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28459795/four-weeks-of-nordic-hamstring-exercise-reduce-muscle-injury-risk-factors-in-young-adults
#14
João Breno de A R Alvares, Vanessa Bernardes Marques, Marco Aurélio Vaz, Bruno Manfredini Baroni
The Nordic hamstring exercise (NHE) is a field-based exercise designed for knee-flexor eccentric strengthening, aimed at muscle strains prevention. However, possible effects of NHE programmes on other hamstring injury risk factors remain unclear. The purpose of this study was to investigate the effects of a NHE training programme on multiple hamstring injury risk factors. Twenty physically active young adults were allocated into two equal sized groups: control group (CG) and training group (TG). The TG was engaged in a 4-week NHE programme, twice a week, 3 sets of 6-10 repetitions; while CG received no exercise intervention...
April 26, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28445229/a-cross-sectional-and-retrospective-cohort-analysis-of-the-effects-of-age-on-flexibility-strength-endurance-lower-body-power-and-aerobic-fitness-in-law-enforcement-officers
#15
Robert G Lockie, J Jay Dawes, Charles L Kornhauser, Ryan J Holmes
There can be a great age range in cohorts of law enforcement officers. As the tasks required of officers generally do not change with advancing age, it is important to understand how physical performance in tests that assess job-specific characteristics may be altered. Retrospective analysis of performance test data for 383 officers (362 males, 21 females) was conducted. The tests included: sit-and-reach to determine hamstring and lower back flexibility; maximal push-up and sit-up repetitions in 60 s to measure muscle endurance; vertical jump (VJ) to assess lower-body power; and 2...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28373610/active-stretching-for-lower-extremity-muscle-tightness-in-pediatric-patients-with-lumbar-spondylolysis
#16
Masahiro Sato, Yasuyoshi Mase, Koichi Sairyo
BACKGROUND: It was reported that hamstring muscle tightness may increase mechanical loading on the lumbar spine. Therefore, we attempt to decrease tightness in the leg muscles in pediatric patients. METHODS: Forty-six pediatric patients with spondylolysis underwent rehabilitation. We applied active stretching to the hamstrings, quadriceps, and triceps surae. Tightness in each muscle was graded as good, fair, or poor. We educated each patient on how to perform active stretching at home...
2017: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/28246078/return-to-play-criteria-after-hamstring-muscle-injury-in-professional-football-a-delphi-consensus-study
#17
Mattia Zambaldi, Ian Beasley, Alison Rushton
BACKGROUND: Hamstring muscle injury (HMI) is the most common injury in professional football and has a high re-injury rate. Despite this, there are no validated criteria to support return to play (RTP) decisions. AIM: To use the Delphi method to reach expert consensus on RTP criteria after HMI in professional football. METHODS: All professional football clubs in England (n=92) were invited to participate in a 3-round Delphi study. Round 1 requested a list of criteria used for RTP decisions after HMI...
August 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28217417/biomechanical-differences-in-brazilian-jiu-jitsu-athletes-the-role-of-combat-style
#18
Pedro Olavo de Paula Lima, Alane Almeida Lima, Anita Camila Sampaio Coelho, Yuri Lopes Lima, Gabriel Peixoto Leão Almeida, Márcio Almeida Bezerra, Rodrigo Ribeiro de Oliveira
BACKGROUND: Brazilian Jiu-Jitsu (BJJ) athletes can be divided into two combat styles: pass fighters (PFs) and guard fighters (GFs). Flexibility of the posterior chain muscles is highly necessary in these athletes, especially in GFs. On the other hand, isometric strength of the trunk extensors is required in PFs. Handgrip strength is important in holding the kimono of the opponent, and symmetrical lower-limb strength is important for the prevention of injuries due to the overload caused by training...
February 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28167188/the-effect-of-kinesio-taping-versus-stretching-techniques-on-muscle-soreness-and-flexibility-during-recovery-from-nordic-hamstring-exercise
#19
RANDOMIZED CONTROLLED TRIAL
Tarik Ozmen, Gokce Yagmur Gunes, Hanife Dogan, Ilyas Ucar, Mark Willems
The purpose of this study was to examine the effects of static stretching, proprioceptive neuromuscular facilitation (PNF) stretching, or kinesio taping (KT) on muscle soreness and flexibility during recovery from exercise. Sixty-five females were randomly assigned to four groups: PNF stretching (n = 15), static stretching (n = 16), KT (n = 17), and control (n = 17). All participants performed nordic hamstring exercise (5 sets of 8 repetitions). In all groups, hamstring flexibility at 24 h and 48 h was not changed from baseline (p > ...
January 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28149407/effects-of-acute-fatigue-of-the-hip-flexor-muscles-on-hamstring-muscle-extensibility
#20
José M Muyor, Francisco M Arrabal-Campos
The purpose of the present study was to evaluate the influence of acute fatigue of the hip flexor muscles on scores attained in tests frequently used in literature to measure hamstring muscle extensibility, namely the passive straight leg raise (PSLR), active straight leg raise (ASLR), passive knee extension (PKE), active knee extension (AKE), sit-and-reach (SR) and toe-touch (TT) tests. A total of seventy-five healthy and recreationally active adults voluntarily participated in this study. To reach fatigue, the participants actively lifted their legs alternately as many times as possible...
December 1, 2016: Journal of Human Kinetics
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