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Nicola C Casartelli, Nicola A Maffiuletti, Romana Brunner, Marcel Büchi, Reto Sutter, Christian W Pfirrmann, Florian D Naal, Michael Leunig, Mario Bizzini
Study Design Cross-sectional study. Background Visual rating of movement pattern in patients with femoroacetabular impingement (FAI) syndrome is of interest because poor control of dynamic hip motion is frequently noted. Objectives To evaluate intra- and inter-rater agreement among physical therapists with different clinical experience, in performing visual rating of movement pattern quality of patients with FAI syndrome using a semiquantitative scale. Methods A video camera was used to record the performance of 34 patients with FAI syndrome performing single-limb standing, squat, frontal lunge, hop lunge, bridge and plank...
March 16, 2018: Journal of Orthopaedic and Sports Physical Therapy
Marcie Harris-Hayes, Karen Steger-May, Linda R Van Dillen, Mario Schootman, Gretchen B Salsich, Sylvia Czuppon, John C Clohisy, Paul K Commean, Travis J Hillen, Shirley A Sahrmann, Michael J Mueller
Study Design Ancillary analysis, time-controlled randomized clinical trial. Background Movement pattern training (MPT) has been shown to improve function among patients with chronic hip joint pain (CHJP). Objective Determine the association among treatment outcomes and mechanical factors associated with CHJP. Methods Twenty-eight patients with CHJP, 18-40 years, participated in MPT, either immediately after assessment or after a wait-list period. MPT included task-specific training to reduce hip adduction motion during functional tasks and hip muscle strengthening...
March 16, 2018: Journal of Orthopaedic and Sports Physical Therapy
Paul M Gittings, Dana A Hince, Benedict M Wand, Fiona M Wood, Dale W Edgar
External stabilization is reported to improve reliability of hand held dynamometry, yet this has not been tested in burns. We aimed to assess the reliability of dynamometry using an external system of stabilization in people with moderate burn injury and explore construct validity of strength assessment using dynamometry.Participants were assessed on muscle and grip strength three times on each side. Assessment occurred three times per week for up to four weeks. Within session reliability was assessed using intraclass correlations calculated for within session data grouped prior to surgery, immediately after surgery and in the sub-acute phase of injury...
March 13, 2018: Journal of Burn Care & Research: Official Publication of the American Burn Association
Tereza Kmentova, Anna Valerianova, Lucie Kovarova, Jana Lachmanova, Zuzana Hladinova, Jan Malik
BACKGROUND: Creation of vascular access leads to considerable local haemodynamic changes with decreased hand perfusion. Distal limb tissues then represent a model of hand ischaemia effect on muscles. The aim of our study was to investigate how the presence of vascular access influences the hand muscle strength in end-stage renal disease patients. METHODS: We included 52 chronically haemodialysed patients with upper limb access without clinical signs of hand ischaemia...
March 1, 2018: Journal of Vascular Access
Joery P Molenaar, Nicol C Voermans, Lysanne A de Jong, Dick F Stegeman, Jonne Doorduin, Baziel G van Engelen
Impaired muscle relaxation is a feature of many neuromuscular disorders. However, there are few tests available to quantify muscle relaxation. Transcranial magnetic stimulation (TMS) of the motor cortex can induce muscle relaxation by abruptly inhibiting corticospinal drive. The aim of our study is to investigate if repeatability and reliability of TMS-induced relaxation is greater than voluntary relaxation. Furthermore, effects of sex, cooling and fatigue on muscle relaxation properties were studied. Muscle relaxation of deep finger flexors was assessed in twenty-five healthy subjects (14 M and 11 F, aged 39...
March 15, 2018: Journal of Applied Physiology
Justin W Y Lee, Cheng Li, Patrick S H Yung, Kai-Ming Chan
Background/Objective: Evaluating hamstring strength by isokinetic dynamometry is limited by various practical issues such as time and cost. A video-based Nordic hamstring exercise is introduced as an alternative option. The aims of this study are to evaluate 1.) the between-session reliability and 2.) concurrent validity of the testing method compared to a standardized isokinetic dynamometry. Methods: Thirty male elite footballers were recruited for the study. From the Nordic hamstring exercise, the video-analysis-determined Nordic break-point angles where the participant could no longer withstand the force of the fall (eccentric mode) and the number of seconds that the player could hold at 30° forward flexion angle (isometric mode) were measured...
June 2017: Journal of Exercise Science and Fitness
Gaspar Epro, Andreas Mierau, Christopher McCrum, Michael Leyendecker, Gert-Peter Bruggemann, Kiros Karamanidis
The plantar flexors play a crucial role in recovery from sudden disturbances to gait. The objective of this study was to investigate whether medium (months) or long-term (years) exercise-induced enhancement of triceps surae (TS) neuromuscular capacities affects older adults' ability to retain improvements in reactive gait stability during perturbed walking acquired from perturbation training sessions. Thirty-four female adults (65{plus minus}7y) were recruited to a perturbation training group (n=13) or a group which additionally completed 14 weeks of TS neuromuscular exercise (n=21), 12 of whom continued with the exercise for 1...
March 14, 2018: Journal of Neurophysiology
Katrine Tranaas Vannebo, Vegard Moe Iversen, Marius Steiro Fimland, Paul Jarle Mork
BACKGROUND: There is a lack of test-retest reliability studies of measurements of cervical muscle strength, taking into account gender and possible learning effects. OBJECTIVE: To investigate test-retest reliability of measurement of maximal isometric cervical muscle strength by handheld dynamometry. METHODS: Thirty women (age 20-58 years) and 28 men (age 20-60 years) participated in the study. Maximal isometric strength (neck flexion, neck extension, and right/left lateral flexion) was measured on three separate days at least five days apart by one evaluator...
March 2, 2018: Journal of Back and Musculoskeletal Rehabilitation
Alicia En Ling Tan, Tiffany L Grisbrook, Novia Minaee, Sîan Williams
BACKGROUND: Isometric assessment of muscular function using a hand held dynamometer (HHD) is frequently used in clinic environments. However, there is controversy in terms of the validity of isometric assessment to monitor changes in dynamic performance. One repetition maximum (1RM) is considered the gold standard for evaluating dynamic strength, though clinician's do not often use 1RM testing, preferring to be cautious with clients who have pre-existing impairments. If strength testing using a HHD could be used to predict 1RM, this may have significant implications for the use of isometric testing to prescribe exercise in clinical environments...
March 5, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
T G Ilkevitch, N I Medvedkova
The article presents analysis of application of time budget by contingent of female students-artists of different courses. The purpose of study is to investigate life-style and health indices of female students-artists. The study tasks included to determine time spending for various kinds of activity of female students, to analyze certain health indices of female artists and to substantiate activities related to health promotion of this contingent. The applied methods included analysis of publications, analysis of temporarily disability certificates, questionnaire survey, health indices testing...
July 2017: Problemy Sot︠s︡ialʹnoĭ Gigieny, Zdravookhranenii︠a︡ i Istorii Medit︠s︡iny
Clara Suemi da Costa Rosa, Danilo Yuzo Nishimoto, Giovana Damasceno E Souza, Ariane Pereira Ramirez, Carla Oliveira Carletti, Célio Guilherme Lombardi Daibem, Giorgos K Sakkas, Henrique Luiz Monteiro
OBJECTIVE: This study aimed to investigate the effect of continuous progressive resistance training on body composition, functional capacity and self-reported quality of life in end-stage renal disease patients. DESIGN: A randomized controlled trial. SUBJECTS: The study included 52 hemodialysis patients (aged 55.7 ± 14.03 years) randomized into exercise (progressive resistance training (PRT), n = 28) or control (CON, n = 24) groups...
March 1, 2018: Clinical Rehabilitation
Lydia Lera, Cecilia Albala, Bárbara Leyton, Carlos Márquez, Bárbara Angel, Rodrigo Saguez, Hugo Sánchez
Aim: This study was aimed to set reference values of hand-grip strength by age and sex and validate cut points for risk of functional limitation and mortality in older Chileans. Methods: This was a pooled analysis of four studies including 6,426 people ≥60 years of nondependent community-dwelling Chileans. After exclusion criteria, the final sample included 5,250 subjects, from whom 2,193 were followed to study all-cause mortality associated with low hand-grip strength...
2018: Clinical Interventions in Aging
Jessica Robinson-Papp, Mary Catherine George, Alexandra Nmashie, Donald Weisz, David M Simpson
Objective : Open-label data suggest that intravenous immunoglobulin (IVIG) might improve lower-extremity strength in human immunodeficiency virus (HIV)-associated myelopathy (HIVM), a rare but debilitating neurologic complication of HIV. We sought to determine the feasibility of testing the efficacy of IVIG for HIVM more rigorously. Design : We conducted a randomized, double-blind, placebo-controlled feasibility trial of IVIG for HIVM, using dynamometry as an outcome measure (Clinical Trial No. NCT01561755)...
February 1, 2018: Innovations in Clinical Neuroscience
Gaspar Epro, Christopher McCrum, Andreas Mierau, Michael Leyendecker, Gert-Peter Bruggemann, Kiros Karamanidis
This study aimed to examine whether the triceps surae (TS) muscle-tendon unit (MTU) mechanical properties affects gait stability and its reactive adaptation potential to repeated perturbation exposure in older adults. Thirty-four older adults each experienced eight separate unexpected perturbations during treadmill walking, while a motion capture system was used to determine the margin of stability (MoS) and base of support (BoS). Ankle plantarflexor muscle strength and Achilles tendon (AT) stiffness were analysed using ultrasonography and dynamometry...
March 1, 2018: Journal of Applied Physiology
Andrew D Vigotsky, Megan A Bryanton, Greg Nuckols, Chris Beardsley, Bret Contreras, Jessica Evans, Brad J Schoenfeld
Previous investigations of strength have only focused on biomechanical or psychological determinants, while ignoring the potential interplay and relative contributions of these variables. The purpose of this study was to investigate the relative contributions of biomechanical, anthropometric, and psychological variables to the prediction of maximum parallel barbell back squat strength. Twenty-one college-aged participants (male = 14; female = 7; age = 23 ± 3 years) reported to the laboratory for two visits...
February 27, 2018: Journal of Strength and Conditioning Research
Marco Aurélio N Added, Diego G de Freitas, Karina T Kasawara, Robroy L Martin, Thiago Y Fukuda
Study design: Case series. Background and purpose: The literature has emphasized the use of exercise as an intervention for individuals with lumbopelvic pain. However, there is limited information to guide clinicians in exercise selection for those with sacroiliac (SI) joint dysfunction. Altered function of the gluteus maximus has been found in those with SI joint dysfunction. The objective of this case series was to assess the effectiveness of an exercise program directed at increasing gluteus maximus strength in those with clinical tests positive for SI joint dysfunction...
February 2018: International Journal of Sports Physical Therapy
Kathryn Iammarino, James Marrie, Mitchell Selhorst, Linda P Lowes
Background: Ankle injuries account for up to 40% of all sport related injuries. These injuries can result in weeks to months of missed sport or work. The PRICE (Protection, Rest, Ice, Compression, Elevation) treatment is standard care for most acute ankle sprains. Recently, early mobilization in adults has been shown to decrease time off from sport or work, and the likelihood of developing chronic instability. To date, no research has been performed assessing the effectiveness of early mobilization in pediatric patients (<18 years)...
February 2018: International Journal of Sports Physical Therapy
Joshua F Baker, Sogol Mostoufi-Moab, Jin Long, Babette Zemel, Said Ibrahim, Elena Taratuta, Mary B Leonard
PURPOSE: Rheumatoid arthritis (RA) is associated with adverse body composition profiles, and low muscle density due to accumulation of intramuscular fat. This study assessed associations between muscle density, body composition, muscle strength, and physical functioning in patients with RA and a reference group. METHODS: Patients with RA, ages 18-70 years, and healthy control participants completed whole-body DXA and peripheral quantitative CT (pQCT) to quantify appendicular lean mass (ALMI, kg/m2 ) and fat mass indices (FMI, kg/m2 ), visceral fat area, and muscle density...
February 26, 2018: Arthritis Care & Research
Ana Díez-Fernández, Vicente Martínez-Vizcaíno, Ana Isabel Torres-Costoso, Jorge Cañete García-Prieto, Pablo Franquelo Morales, Mairena Sánchez-López
OBJECTIVE: The aim of this study was to analyse the mediation role of cardiorespiratory fitness and waist circumference in the association between muscular strength and cardiometabolic risk. DESIGN AND METHODS: Cross-sectional study involving first year college students (n = 370) from a Spanish public university. We measured weight, height, waist circumference, blood pressure, biochemical variables, maximum handgrip strength assessment and cardiorespiratory fitness...
February 22, 2018: Scandinavian Journal of Medicine & Science in Sports
Seth Lenetsky, Matt Brughelli, Roy J Nates, Matt R Cross, Anna V Lormier
Striking impact kinetics are central to performance in combat sports. Despite a multitude of assessment, few in the literature have explored the variability and reliability of punching force assessment. Consequently, this study assessed the variability and reliability of measured punching impact kinetics in untrained and experienced boxers, using a recently developed and validated method of striking dynamometry. Intra-session (both cohorts) and inter-session (untrained only) measures of impulse, peak and mean force were determined across four punch types (jabs, crosses, lead and rear hand hooks) using coefficient of variation (CV), intra-class correlation coefficients (ICC), and typical error of measurement (TEM)...
February 6, 2018: Journal of Strength and Conditioning Research
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