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Differences in Kinetics,Kinematics and Muscle Activation Strategies in Male and Female Team Sport Athletes During Unanticipated Sidestepping

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Journal of Science in Sport and Exercise 2019年第2期1卷 159-167页

作者： Gillian Weir Mirra Stillman Richard van Emmerik Hannah Wyatt Carl Jewell Joseph Hamill Biomechanics Laboratory University of MassachusettsAmherstUSA Motor control Laboratory University of MassachusettsAmherstUSA

Purpose The purpose of this study was to compare kinetics,kinematics and muscle activation strategies between male and female collegiate level athletes during unanticipated sidestepping tasks to further the understanding of sex-specific differ-ences in injury incidence and their potential influence on ACL injury *** Three-dimensional kinematics,ground reaction forces and surface electromyography of eight lower limb muscles were recorded during unanticipated sidestepping in 20 male soccer and 17 female field hockey National collegiate Athlet-ics Association Division 1 ***,hip and knee kinematics,knee joint moments,total muscle activation(TMA:knee,gluteal,quadriceps,hamstrings and gastrocnemii)and directed co-contraction ratios(DCCR)were compared between groups with two-sample t *** No sex differences were observed for peak frontal and transverse plane knee moments(P>0.05),however males had 10%greater knee flexion moments(P=0.047).Females had lower hip flexion and abduction and greater hip internal rota-tion angles than males likely concomitant with the 30%reduction in gluteal TMA(Pcontact and weight acceptance and higher hamstrings TMA during weight acceptance(Pcompared with *** Female and male team sport athletes display similar frontal and transverse plane knee moments,however their ability to support/counter the load applied(i.e.,muscle activations strategies)to the knee joint differed.

关键词： Anterior cruciate ligament Injury Valgus co-contraction

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Effect of Exercise with Rhythmic Auditory Stimulation on Muscle coordination and Gait Stability in Patients with Diabetic Peripheral Neuropathy: A Randomized controlled Trial

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Open Journal of Therapy and Rehabilitation 2019年第3期7卷 79-91页

作者： Keisuke Suzuki Masaya Niitsu Tomohiko Kamo Satoshi Otake Yusuke Nishida Department of Physical Therapy International University of Health and Welfare Odawara Japan Department of Rehabilitation Iwata City Hospital Iwata Japan Department of Physical Therapy Japan University of Health Sciences Satte Japan Department of Physical Therapy International University of Health and Welfare Narita Japan

Background: Diabetic peripheral neuropathy (DPN) changes leg muscle coordination during walking and reduces stability. The aim of this study was to determine whether rhythmic auditory stimulation (RAS) affected the gait performance of patients with DPN. Methods: Forty DPN patients (mean age, 59.1 ± 9.4 y) were randomly allocated to RAS and control groups in equal numbers. The participants in each group underwent 2 weeks of supervised rehabilitative treatment (40 min/day) as inpatients. This included walking twice a day, during which the RAS group participants walked in time with a metronome set at a self-chosen, comfortable rate. We compared gait function, lower limb muscle co-contraction, and gait stability before and after the intervention for both groups, calculated the change in score for each parameter, and assessed differences between the groups with unpaired t-tests and ANcoVA. Results: RAS was associated with significant improvement in all parameters. In the control group, there was no improvement in cadence, co-contraction, or gait stability (vertical). compared with the control group, the RAS group showed improvement in co-contraction and gait stability. conclusion: RAS may be helpful for improving the lower limb muscle coordination and gait function of DPN patients.

关键词： co-contraction Root Mean Square Muscle Activity Gait Stability Auditory Cue

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