Stretch and activation of the human biarticular hamstrings across a range of running speeds

AG Schache; TW Dorn; TV Wrigley; NAT Brown; MG Pandy

Journal article

Stretch and activation of the human biarticular hamstrings across a range of running speeds

AG Schache, TW Dorn, TV Wrigley, NAT Brown, MG Pandy

European Journal of Applied Physiology | SPRINGER | Published : 2013

DOI: 10.1007/s00421-013-2713-9

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Abstract

Purpose: The human biarticular hamstrings [semimembranosus (SM), semitendinosus (ST) and biceps femoris long head (BFLH)] have an important role in running. This study determined how hamstrings neuro-mechanical behaviour changed with faster running, and whether differences existed between SM, ST and BFLH. Methods: Whole-body kinematics and hamstrings electromyographic (EMG) activity were measured from seven participants running at four discrete speeds (range: 3.4 ± 0.1 to 9.0 ± 0.7 m/s). Kinematic data were combined with a three-dimensional musculoskeletal model to calculate muscle-tendon unit (MTU) stretch and velocity. Activation duration and magnitude were determined from EMG data. Result..

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Marcus Pandy Author

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Funding Acknowledgements

Financial support for this study was provided by the Physiotherapy Research Foundation Tagged Sports Physiotherapy Australia Research Grant (T08-THE/SPA(1)018), the Australian Research Council Discovery Projects Grant DP0772838, the Australian Research Council Linkage Projects Grant LP110100262, and a Victorian Endowment for Science, Knowledge and Innovation (VESKI) Fellowship to M. G. P. The authors wish to thank Mr. Doug Rosemond for his assistance with experimental data collection.