ANNALS OF APPLIED SPORT SCIENCE–Special Issue
First National Congress of
"New Scientific Consequence for Iran’s Sport Development" Lahijan Branch, Islamic Azad University, 2014, 10-11 December
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ISSN (Online): 2322 – 4479
The Effects of Three Time Periods (5, 10 And
15 Seconds) Of Isometric Contraction in PNF Method on Range of Hamstring Stretch in Male Non-Athletes
Department of Physical Education and Sport Science, Soushtar Branch, Islamic Azad University, Soushtar, Iran.
It is reported that the effects of three time periods of 5, 10, and 15 seconds (1) of maximum voluntary isometric contraction (MVIC) (2) in the slow-reversal-holdrelax stretching technique. So, The purpose of this study was to investigative the effects of three time periods of 5, 10, and
15 seconds of maximum voluntary isometric contraction on hamstring flexibility in male non- athletes.
Thirty nonathlete male student of azad univercity of 6 locale ir.iran,(Mean±SD; age, 20±2.1years; body mass, 68±6.3 kg; height, 171±5.1 cm) were randomly assigned to one of the three training groups: 5s-MVIC, 10s-MVIC, and 15s-MVIC. Measurements of hamstring stretch were performed at the beginning and at the end of six weeks of training by researcher using a goniometer and SLR test. Training program included one set of stretch training (SRHR-PNF)
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