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hamstring/quadricep ratio

Maryne Cozette, Stéphane Delanaud, Pierre-Marie Lepretre, Thierry Weissland
OBJECTIVE: Shoulder internal (IR) and external rotator (ER) muscles play an important role in the stability of glenohumeral joint. The ratio between the peak torque of ER and IR in concentric (ER/IRPT) and mixed (ER-ECC/IR-CONPT) are usually measured to evaluate the effects of muscle weakness, sport activities, injury and treatment (Greenfield et al., 1990; Scoville et al., 1997). However, ER/IRPT and ER-ECC/IR-CONPT failed to provide some indication on the evolution of the ER/IR torque ratio (ER/IRTorque) and mixed torque ratio (ER-EC/IR-COTorque) during the range of motion (ROM)...
September 2016: Annals of Physical and Rehabilitation Medicine
Karima Belhaj, Hicham Elhyaoui, Soumia Meftah, Laila Mahir, Mohamed Rafai, Abdelhak Garch, Fatima Lmidmani, Abdellatif Elfatimi
OBJECTIVE: Meniscal injuries are an extremely common condition that also occurs well in young adults at a sporting injury, than in most elderly where it is often the degenerative changes in the knee illustration. The application of isokinetic knee is widespread, either in assessment or rehabilitation. The objective of the study is to determine the contribution of the isokinetic for meniscal pathology. MATERIAL/PATIENTS AND METHODS: This is a retrospective study of 6 months, including patients followed in physical medicine and rehabilitation for meniscal lesions confirmed by imaging and in whom supported classical rehabilitative and/or isokinetic was indicated...
September 2016: Annals of Physical and Rehabilitation Medicine
Laila Mahir, Karima Belhaj, Siham Zahi, Fatima Lmidmani, Abdellatif El Fatimi
OBJECTIVE/INTRODUCTION: Isokinetic is a reference method for evaluation of muscle strength. It enables a functional diagnosis specifying levels of disability and performance deficits in the subject knee osteoarthritis. OBJECTIVE: To determine the profile isokinetic knee osteoarthritis in the subject compared to a healthy population. MATERIAL/PATIENTS AND METHODS: Prospective study, descriptive and analytical cohort of 6 months of 30 knee OA patients compared with 15 healthy subjects collected in physical medicine and functional rehabilitation of Ibn Rushd University Hospital, Casablanca, Morocco...
September 2016: Annals of Physical and Rehabilitation Medicine
Laila Mahir, Siham Zahi, Karima Belhaj, Fatima Lmidmani, Abdellatif El Fatimi
OBJECTIVE: The isokinetic allows precise and reproducible measurement of muscle strength in the normal state and in various pathological contexts. Its use in neurological diseases is limited, despite its vast scope. To report the profile isokinetic knee during the decisive cauda equina syndrome as a buoyant building program, through 2 comments. OBSERVATIONS: Observation 1: patient aged 58 years, without particular pathological ATCDS, which has a cauda equina syndrome of herniated disc L4/L5 made...
September 2016: Annals of Physical and Rehabilitation Medicine
Tjerk Zult, Alli Gokeler, Jos J A M van Raay, Reinoud W Brouwer, Inge Zijdewind, Tibor Hortobágyi
PURPOSE: The function of the anterior cruciate ligament (ACL) patients' non-injured leg is relevant in light of the high incidence of secondary ACL injuries on the contralateral side. However, the non-injured leg's function has only been examined for a selected number of neuromuscular outcomes and often without appropriate control groups. We measured a broad array of neuromuscular functions between legs of ACL patients and compared outcomes to age, sex, and physical activity matched controls...
September 24, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Won-Gyu Yoo
[Purpose] This study compared the hamstring/quadriceps ratio in females during squat exercise using various foot wedges. [Subjects and Methods] Nine females participated in this study. Surface electrodes measurements were taken over the hamstring and quadriceps under 3 squat exercise conditions, and the hamstring/quadriceps ratio was calculated. [Results] The hamstring/quadriceps ratio was significantly increased during squat exercise in inclined wedge condition (7.4 ± 1.8), compared to the declined wedge condition (5...
August 2016: Journal of Physical Therapy Science
Yuya Ueda, Takehiko Matsushita, Daisuke Araki, Akihiro Kida, Kohei Takiguchi, Yohei Shibata, Kumiko Ono, Rei Ono, Tomoyuki Matsumoto, Koji Takayama, Yoshitada Sakai, Masahiro Kurosaka, Ryosuke Kuroda
PURPOSE: Patients typically return to sports activities 6-12 months after anterior cruciate ligament (ACL) reconstruction, and quadriceps strength has been used as one of the criteria to return to sports activities. The purpose of this study is to identify the factors that affect quadriceps strength recovery after ACL reconstruction with a hamstring tendon autograft 6 months after surgery. METHODS: Isokinetic quadriceps strength at 60°/s was measured preoperatively and 6 months after surgery in 193 athletes who underwent ACL reconstruction with a hamstring tendon autograft...
August 23, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
O Ludwig, J Kelm
Soccer and football players are exposed to a high risk of groin pain. In some cases, the pubic symphysis is the origin of the problems.This article presents a case report of a young elite soccer player who, over a period of two years, suffered from pain in the groin and symphysis area. The right leg was the kicking leg. Imaging techniques did not reveal pathological findings. Sports hernia, osteomyelitis, enthesopathy, adductor tendonitis, and muscle sprains, as well as rheumatic or urogenital disorders were excluded...
August 2016: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
David A Ross, Kirsten M Mitcheltree, Charity Cavazos, Daeyeol Kim, Benjamin Friedlander, Rebecca Larson, Debra A Bemben, Michael G Bemben
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
Cassio V Ruas, Lee E Brown, Camila D Lima, Andre R Mesquita, Ronei S Pinto
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
Jennifer Bossi, Elizabeth Mullin, M Susan Guyer, Vincent Paolone
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
Fearghal Behan, Tom M Maden-Wilkinson, Matt T G Pain, Jonathan P Folland
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
Marc Dauty, Pierre Menu, Alban Fouasson-Chailloux, Sophie Ferréol, Charles Dubois
OBJECTIVES: previous studies investigating the ability of isokinetic strength ratios to predict hamstring injuries in soccer players have reported conflicting results. HYPOTHESIS: to determine if isokinetic ratios are able to predict hamstring injury occurring during the season in professional soccer players. STUDY DESIGN: case-control study; LEVEL OF EVIDENCE: 3. METHODS: from 2001 to 2011, 350 isokinetic tests were performed in 136 professional soccer players at the beginning of the soccer season...
January 2016: Muscles, Ligaments and Tendons Journal
Kathrin Steffen, Agnethe Nilstad, Eirik Klami Kristianslund, Grethe Myklebust, Roald Bahr, Tron Krosshaug
PURPOSE: This study aimed to prospectively investigate the association between isolated and functional lower extremity muscle strength and the risk for noncontact anterior cruciate ligament (ACL) injury in Norwegian female elite handball and football players. METHODS: From 2007 through 2015, premier league players participated in strength testing and were prospectively followed for ACL injury risk. At baseline, we recorded player demographics, playing and ACL injury history, and measured peak concentric isokinetic quadriceps and hamstring torques (60°·s), hamstring-to-quadriceps ratio, isometric hip abduction strength, and one-repetition maximum in a seated leg press...
November 2016: Medicine and Science in Sports and Exercise
M Lehnert, M De Ste Croix, A Zaatar, J Hughes, R Varekova, O Lastovicka
Poor neuromuscular control has been proposed as a risk factor for non-contact injuries, thus this study aimed to explore the effects of soccer-specific fatigue on leg muscle activation, reactive strength, leg stiffness, and functional hamstring/quadriceps ratio (H/QFUNC ) in elite male youth soccer players. Outcome measures were determined in 18 youth players (age 14.4 ± 0.5 years; stature 169.4 ± 9.9 cm; mass 59.3 ± 8.9 kg; maturity offset 0.86 ± 0.88 years) pre and post simulated soccer match play (SAFT(90) )...
June 10, 2016: Scandinavian Journal of Medicine & Science in Sports
Polyvios Kyritsis, Roald Bahr, Philippe Landreau, Riadh Miladi, Erik Witvrouw
BACKGROUND: The decision as to whether or not an athlete is ready to return to sport (RTS) after ACL reconstruction is difficult as the commonly used RTS criteria have not been validated. PURPOSE: To evaluate whether a set of objective discharge criteria, including muscle strength and functional tests, are associated with risk of ACL graft rupture after RTS. MATERIALS AND METHODS: 158 male professional athletes who underwent an ACL reconstruction and returned to their previous professional level of sport were included...
August 2016: British Journal of Sports Medicine
Tobias Alt, Axel J Knicker, Heiko K Strüder
Analytical methods to assess thigh muscle balance need to provide reliable data to allow meaningful interpretation. However, reproducibility of the dynamic control ratio at the equilibrium point has not been evaluated yet. Therefore, the aim of this study was to compare relative and absolute reliability indices of its angle and moment values with conventional and functional hamstring-quadriceps ratios. Furthermore, effects of familiarisation and angular velocity on reproducibility were analysed. A number of 33 male volunteers participated in 3 identical test sessions...
May 23, 2016: Journal of Sports Sciences
Hande Guney, Inci Yuksel, Defne Kaya, Mahmut Nedim Doral
BACKGROUND: The aim of this study was to investigate the correlation between quadriceps to hamstring (Q:H) ratio and the functional outcomes in Patellofemoral Pain (PFP) patients. METHODS: The study included forty-four women diagnosed with unilateral PFP. Eccentric and concentric quadriceps and hamstring strength were recorded. Conventional Q:H ratio was calculated as the concentric quadriceps to concentric hamstring peak torque (Ratio 1). Functional ratios were calculated as the eccentric quadriceps to concentric hamstring peak torque (Ratio 2) and as the concentric quadriceps to eccentric hamstring torque (Ratio 3)...
August 2016: Knee
Alireza Monajati, Eneko Larumbe-Zabala, Mark Goss-Sampson, Fernando Naclerio
BACKGROUND: Hamstring strain and anterior cruciate ligament injuries are, respectively, the most prevalent and serious non-contact occurring injuries in team sports. Specific biomechanical and neuromuscular variables have been used to estimate the risk of incurring a non-contact injury in athletes. OBJECTIVE: The aim of this study was to systematically review the evidences for the effectiveness of injury prevention protocols to modify biomechanical and neuromuscular anterior cruciate and/or hamstring injuries associated risk factors in uninjured team sport athletes...
2016: PloS One
Nirav Maniar, Anthony J Shield, Morgan D Williams, Ryan G Timmins, David A Opar
OBJECTIVE: To systematically review the evidence base related to hamstring strength and flexibility in previously injured hamstrings. DESIGN: Systematic review and meta-analysis. DATA SOURCES: A systematic literature search was conducted of PubMed, CINAHL, SPORTDiscus, Cochrane Library, Web of Science and EMBASE from inception to August 2015. INCLUSION CRITERIA: Full-text English articles which included studies which assessed at least one measure of hamstring strength or flexibility in men and women with prior hamstring strain injury within 24 months of the testing date...
August 2016: British Journal of Sports Medicine
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