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Hip rotator isokinetic

Suzi Edwards, Hiram C Brooke, Jill L Cook
OBJECTIVES: This study aimed to explore the differences in the magnitude of movement variability and strategies utilized during an unanticipated cut task between players with and without a history of groin pain. DESIGN: Cross-sectional design. SETTING: Biomechanics laboratory. PARTICIANTS: Male Australian football players with (HISTORY; n = 7) or without (CONTROL; n = 10) a history of groin pain. OUTCOME MEASURES: Three-dimensional ground reaction forces (GRF) and kinematics were recorded during 10 successful trials of an unanticipated cut task, and isokinetic hip adduction and abduction strength...
July 22, 2016: Physical Therapy in Sport
Hidefumi Aramaki, Munenori Katoh, Yukinobu Hiiragi, Tsubasa Kawasaki, Tomohisa Kurihara, Yorikatsu Ohmi
[Purpose] This study aimed to investigate the relatedness, reliability, and validity of isometric muscle strength measurements of hip abduction and abduction with an external hip rotation in a bent-hip position using a handheld dynamometer with a belt. [Subjects and Methods] Twenty healthy young adults, with a mean age of 21.5 ± 0.6 years were included. Isometric hip muscle strength in the subjects' right legs was measured under two posture positions using two devices: a handheld dynamometer with a belt and an isokinetic dynamometer...
July 2016: Journal of Physical Therapy Science
Paulina Kloskowska, Dylan Morrissey, Claire Small, Peter Malliaras, Christian Barton
BACKGROUND: Sports-related groin pain (SRGP) is a common entity in rotational sports such as football, rugby and hockey, accounting for 12-18 % of injuries each year, with high recurrence rates and often prolonged time away from sport. OBJECTIVE: This systematic review synthesises movement and muscle function findings to better understand deficits and guide rehabilitation. STUDY SELECTION: Prospective and retrospective cross-sectional studies investigating muscle strength, flexibility, cross-sectional area, electromyographic activation onset and magnitude in patients with SRGP were included...
May 3, 2016: Sports Medicine
Takashi Nagai, John P Abt, Timothy C Sell, Karen A Keenan, Nicholas C Clark, Brian W Smalley, Michael D Wirt, Scott M Lephart
BACKGROUND: Low back pain (LBP) is one of the most common musculoskeletal issues facing military helicopter pilots. It is clinically important to identify differences in musculoskeletal characteristics between pilots with and without a LBP history for formulating effective interventions. OBJECTIVE: To compare lumbar spine and hip flexibility and trunk strength in pilots with and without a LBP history. METHODS: A total of 30 pilots with a LBP history were matched with pilots without a LBP history...
2015: Work: a Journal of Prevention, Assessment, and Rehabilitation
Laura E Diamond, Tim V Wrigley, Rana S Hinman, Paul W Hodges, John O'Donnell, Amir Takla, Kim L Bennell
OBJECTIVES: This study investigated isometric and isokinetic hip strength in individuals with and without symptomatic femoroacetabular impingement (FAI). The specific aims were to: (i) determine whether differences exist in isometric and isokinetic hip strength measures between groups; (ii) compare hip strength agonist/antagonist ratios between groups; and (iii) examine relationships between hip strength and self-reported measures of either hip pain or function in those with FAI. DESIGN: Cross-sectional...
September 2016: Journal of Science and Medicine in Sport
Michael A Samaan, Matthew C Hoch, Stacie I Ringleb, Sebastian Bawab, Joshua T Weinhandl
The aim of this study was to determine the effects of hamstrings fatigue on lower extremity joint coordination variability during a sidestep cutting maneuver. Twenty female recreational athletes performed five successful trials of a sidestep cutting task pre- and postfatigue. Each participant completed an isolated hamstrings fatigue protocol consisting of isokinetic maximum effort knee flexion and passive extension contractions. Vector coding was used to examine hip and knee joint couplings (consisting of various planar motions) during the impact and weight acceptance phases of the sidestep cut stance phase...
April 2015: Journal of Applied Biomechanics
Joachim Van Cant, Catherine Pineux, Laurent Pitance, Véronique Feipel
PURPOSE/BACKGROUND: Patellofemoral pain (PFP) is a common knee conditions experienced by adolescents and young adults, seen particularly in women. Clinicians and researchers need to understand how proximal, local, or distal factors may influence the development of PFP and affect individuals once they have developed PFP. Proximal factors are the focus of recent studies and the purpose of this systematic review was to determine if females with PFP have hip muscle strength or endurance deficits when compared to their unaffected leg and to comparison groups...
October 2014: International Journal of Sports Physical Therapy
Rodrigo Scattone Silva, Fábio Viadanna Serrão
BACKGROUND: Adolescents have a high incidence of knee joint dysfunctions, with up to 28% of adolescents reporting knee pain. Although adolescent females have a greater incidence of knee injuries in comparison to males, few studies conducted biomechanical evaluations in this population aiming to identify sex differences. If trunk and/or lower limb biomechanical impairments are identified in female adolescents, the implementation of early interventions for injury prevention will be better justified...
November 2014: Clinical Biomechanics
Kevin McCurdy, John Walker, Rusty Armstrong, George Langford
The purpose of this study was to compare the relationship between several measures of single-joint, isometric, eccentric, and squat strength and unilateral and bilateral landing mechanics at the hip and knee in women. Twenty six healthy female subjects with previous athletic experience (height, 165.1 ± 7.01 cm; mass, 60.91 ± 7.14 kg; age, 20.9 ± 1.62 years) participated in this study. Hip and knee mechanics were measured using the MotionMonitor capture system (Innovative Sports Training, Inc.) with 3-dimensional electromagnetic sensors during bilateral (60 cm) and unilateral drop jumps (30 cm)...
September 2014: Journal of Strength and Conditioning Research
Masatoshi Naito, Yoshinari Nakamura
Curved periacetabular osteotomy (CPO) was developed for the treatment of dysplastic hips in 1995. In CPO, the exposure of osteotomy sites and osteotomy of the ischium are made in the same manner as Bernese periacetabular osteotomy, and iliac and pubic osteotomies are performed in the same manner as rotational acetabular osteotomy. We studied the dynamic instabilities of 25 dysplastic hips before and after CPO using triaxial accelerometry. Overall magnitude of acceleration was significantly decreased from 2...
June 2014: Clinics in Orthopedic Surgery
Rodrigo de M Baldon, Leonardo Furlan, Fábio V Serrão
The purpose of this study was to verify the influence of the hip flexion angle on isokinetic rotator torque and acceleration times of the hip medial and lateral rotator muscles. Twenty-one healthy women were included in this study. The hip rotator function was evaluated at 3 different hip flexion angles (10°, 40°, and 90°). The results showed that both eccentric and concentric hip lateral rotator torques were greater at 40° of hip flexion when compared with 90°. Moreover, both the eccentric and concentric hip medial rotator torques were greater at 90° of hip flexion than at 40° and 10°, and greater at 40° than at 10°...
October 2013: Journal of Applied Biomechanics
Michelle Boling, Darin Padua
BACKGROUND/PURPOSE: Decreased strength of the hip musculature and altered mechanics of the lower extremity have been identified in individuals with patellofemoral pain (PFP). The aim of this study was to determine if a relationship exists between hip muscle strength and transverse and frontal plane motion at the hip and knee, and ipsilateral trunk flexion during a jump-landing task in individuals with PFP. METHODS: Fifteen individuals (10 females, 5 males) with PFP participated in this investigation...
October 2013: International Journal of Sports Physical Therapy
Rodrigo de Marche Baldon, Daniel F Moreira Lobato, Andre P Yoshimatsu, Ana Flávia dos Santos, Andrea L Francisco, Paulo R Pereira Santiago, Fábio V Serrão
OBJECTIVE: To verify the effects of plyometric training on lower limb kinematics, eccentric hip and knee torques, and functional performance. DESIGN: Cohort study. SETTING: Research laboratory. PARTICIPANTS: Thirty-six females were divided into a training group (TG; n = 18) that carried out the plyometric training for 8 weeks, and a control group (CG; n = 18) that carried out no physical training. INTERVENTIONS: Twenty-four plyometric training sessions during approximately 8 weeks with 3 sessions per week on alternate days...
January 2014: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
Rodrigo Scattone Silva, Lívia Maria Veronese, Ana Luisa Granado Ferreira, Fábio Viadanna Serrão
Hip strength impairments have been established as risk factors for lower limb injuries. Hip muscles strength might be influenced by foot misalignments, however this has not yet been verified. Forefoot varus (FV) has been shown to cause subtalar joint hyperpronation. Subtalar hyperpronation has been associated with excessive lower limb internal rotation in weight-bearing activities. Also, subtalar hyperpronation might result in greater ground reaction force dissipation at the foot. Consequently, there would be less demand for force dissipation at the hip joint, which could reduce the capacity for hip eccentric torque in these subjects...
December 2013: Manual Therapy
Ruth Verrelst, Tine Marieke Willems, Dirk De Clercq, Philip Roosen, Lennert Goossens, Erik Witvrouw
OBJECTIVE: To prospectively identify proximal risk factors contributing to the development of exertional medial tibial pain (EMTP). METHODS: Data were prospectively collected on healthy female students in physical education, who were freshmen in 2010-2011 and 2011-2012. 95 female students, aged 18.15 ± 0.84, were tested at the beginning of their first academic year. Testing included isokinetic hip strength measurements of the abductors, adductors, internal rotators and external rotators...
November 2014: British Journal of Sports Medicine
Viviane Otoni do Carmo Carvalhais, Juliana de Melo Ocarino, Vanessa Lara Araújo, Thales Rezende Souza, Paula Lanna Pereira Silva, Sérgio Teixeira Fonseca
There are extensive connections between the latissimus dorsi (LD) and gluteus maximus (GMax) muscles and the thoracolumbar fascia (TLF), which suggests a possible pathway for myofascial force transmission. The present study was designed to provide empirical evidence of myofascial force transmission from LD to contralateral GMax through TFL in vivo. To accomplish this goal, we evaluated whether active or passive tensioning of the LD results in increased passive tension of the contralateral GMax, indexed by changes in the hip resting position (RP) or passive stiffness...
March 15, 2013: Journal of Biomechanics
Kevin R Ford, Jeffery A Taylor-Haas, Katlin Genthe, Jason Hugentobler
PURPOSE: Hip strength may directly relate to abnormal running mechanics and contribute to the high incidence of overuse injuries in distance runners. The purpose of this study was to determine the relationship between hip isokinetic strength and thorax and pelvic motion during treadmill running. METHODS: Isokinetic hip strength and treadmill running kinematics were collected on 24 collegiate cross-country runners (14 males and 10 females). Each subject completed a running protocol on a treadmill at a self-selected speed (3...
June 2013: Medicine and Science in Sports and Exercise
M Baldon Rde, Leonardo Furlan, Fábio V Serrão
The purpose of this study was to verify the influence of the hip flexion angle on isokinetic rotator torque and acceleration times of the hip medial and lateral rotator muscles. Twenty-one healthy women were included in this study. The hip rotator function was evaluated at 3 different hip flexion angles (10º, 40º and 90º). The results showed that both eccentric and concentric hip lateral rotator torques were greater at 40º of hip flexion when compared with 90º. Moreover, both the eccentric and concentric hip medial rotator torques were greater at 90º of hip flexion than at 40º and 10º, and greater at 40º than at 10º...
December 27, 2012: Journal of Applied Biomechanics
Diego X Leite, Jean M M Vieira, Viviane O C Carvalhais, Vanessa L Araújo, Paula L P Silva, Sérgio T Fonseca
BACKGROUND: Adequate passive stiffness of the hip joint can prevent the occurrence of excessive transverse plane lower limb movement during functional activities. Strength training of the hip lateral rotator muscles can be used to increase the stiffness of this joint. However, the relationship between hip joint passive stiffness and muscle strength remains undocumented in the literature. OBJECTIVE: To investigate the association between hip passive stiffness measured during medial rotation and hip lateral rotator concentric torque in healthy young adults...
September 2012: Revista Brasileira de Fisioterapia
Jensen L Brent, Gregory D Myer, Kevin R Ford, Mark V Paterno, Timothy E Hewett
CONTEXT: As high school female athletes demonstrate a rate of noncontact anterior cruciate ligament (ACL) injury 3-6 times higher than their male counterparts, research suggests that sagittal-plane hip strength plays a role in factors associated with ACL injuries. OBJECTIVE: To determine if gender or age affect hip-abductor strength in a functional standing position in young female and male athletes. DESIGN: Prospective cohort design. SETTING: Biomechanical laboratory...
February 2013: Journal of Sport Rehabilitation
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