Acute effects of contract-relax PNF and static stretching on flexibility, jump performance and EMG activities: A case study
Journal Title: Biology of Exercise - Year 2016, Vol 12, Issue 1
Abstract
The purpose of this case study was to describe the acute effects of contract-relax proprioceptive neuromuscular facilitation (cRPNF) and static stretching (SS) on hamstring flexibility, vertical jump performance and electromyography (EMG) of vastus lateralis (VL), vastus medialis (VM) and gastrocnemius (GAS) in two sedantary males. Each participant completed 8 activities: warm-up, pre-stretching range of motion (ROM) of hip, pre-stretching countermovement jump (cMJ), pre-stretching EMG recording, cRPNF or SS procedure, post-stretching ROM of hip, post-stretching cMJ and post-stretching EMG recording. The results of this study revealed that there were no significant increases in ROM of hip (25,34% and 24,19%) and no significant decreases in cMJ (-8,67% and -8,17%), EMG activities of VL (-12,52% and -29,34%), VM (-13,02% and -32,80%) and GAS (-20,63% and -24,81%) following cRPNF and SS. There were no significant differences were found between both experimental groups for all variables (p > 0,05). It was concluded that cRPNF ans SS resulted in similar changes of ROM of the hip joint, cMJ and EMG activities of VL, VM and GAS muscles in sedantary males.
Authors and Affiliations
ASSIST. PROF. KERIM SOZBIR| Department of Coaching Education, School of Physical Education and Sports, Abant Izzet Baysal University, 14030, Bolu, TURKEY, PROF. MARK ET WILLEMS| Department of Sport and Exercise Sciences, University of Chichester, Chichester, UNITED KINGDOM, PROF. GUL TIRYAKI-SONMEZ| Department of Health Sciences, Lehman College, The City University of New York, Bronx, New York, USA, MSc. PAULIUS RAGAUSKAS| Faculty of Sports Biomedicine, Lithuanian Sports University, Kaunas, LITHUANIA
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- EP ID EP15878
- DOI http: doi.org/10.4127/jbe.2016.0099
- Views 373
- Downloads 17
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