![]() ![]() Marek SM 1 reported that static stretching was “highly efficient” in reducing muscle performance in terms of strength, specifically for persons between 20 and 30 years of age. Static stretching has been scrutinized in the last decade, with many studies reporting that the practice may elicit negative effects on muscle performance when performed prior to activity. 7 Additionally, some studies suggest that greater muscle stiffness may be beneficial in the storage and reuse of elastic energy. 5 However, the validity of such claims and the importance of flexibility training prior to activity is not quite certain, as additional reports claim that static stretching prior to activity does not reduce the risk of injury or delayed onset muscle soreness (DOMS), 2, 6 with some studies even suggesting that the risk for injuries directly increases with flexibility. ![]() 1-3 In fact, flexibility training prior to activity has been proven to decrease musculotendinous injuries, 4 thus supporting the desired goal of obtaining increased flexibility and joint range of motion prior to exercising or participating in a sport. Although specific warm-up regimes will vary between individuals, it is well known that a traditional approach will include static stretching for the purpose of achieving improved muscular flexibility and joint range of motion. It is a common understanding that many athletic persons perform a warm-up prior to participation in an exercise or sport activity. Keywords: dynamic and static stretching exercise, strength, muscle performance Background Static stretching does not affect knee extensor and flexor muscle power. Dynamic stretching increases knee extensor and flexor muscle powers at “strength speeds.” Stretching is an important component of warm-up routines for young-adult athletic subjects. Results: A mixed design ANOVA showed that there was a significant main effect for stretching type and time (pre-stretch, post-stretch) for dynamic stretching in knee flexor and extensor average power at 60˚/sec (p0.05).Ĭonclusion: Dynamic stretching exercises in the form of straight leg kicks and butt kicks may increase quadriceps and hamstring muscle performance at “strength speed” in terms of average power and may be beneficial to young-adult athletes when performed prior to activity. Pre-test and post-test measurements of hamstrings and quadriceps average power (Watts) at 60˚/sec and 180˚/sec were obtained using a Biodex Isokinetic Dynamometer. Method: Forty young-adult athletes were systematically assigned to static or dynamic stretching groups and performed their respective quadriceps and hamstrings stretches according to their group assignment protocols. Literature has shown deficits in muscle performance lasting up to one hour as a result of performing static stretching directly prior to activity alternatively, dynamic stretching has been found to induce positive effects. Objectives: The purpose of the current study was to compare the effects of static and dynamic stretching in the young-adult athletic population in terms of average knee extensor and flexor muscle power.īackground: Stretching prior to exercise is a common practice for many athletic persons, in which varying protocols frequently including static or dynamic stretches. ![]() Study design: Single-blind randomized study ![]()
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