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Dynamic Stretching

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This chapter reviews the previous studies that have examined the effects of different types of stretching techniques on power output performance such as vertical jump. This chapter is divided into three parts; the role of stretching on athletic performance, the effects of dynamic-stretching on athletic performance, and the effects of static-stretching on athletic performance.

The Role of Stretching on Athletic Performance According to the American College of Sports Medicine (ACSM), stretching before or after competitions are both acceptable practices (Franklin, Whaley, & Howley, 2000). In addition, the National Strength and Conditioning Association (NSCA) guidelines state stretching before competition will improve performance and functional …show more content…
The benefits of dynamic-stretching include an increase in core and muscle temperature, elongating the muscles, stimulating the nervous system, and helping decrease the chance of injury (Gregory, 2001).
Studies from the last three years demonstrate support for dynamic-stretching as it has grown up rapidly in popularity because of its beneficial effects on strength and power production which could lead to enhanced performance on the field (Faigenbaum, Bellucci, Bernieri, Bakker, & Hoorens, 2005; McMillian, Moore, Hatler, & Taylor, 2006). Therefore, dynamic-stretching has become the standard type of stretching in the last 3 years and has been used widely by trainers and coaches to prepare their athletes for athletic competitions (McMillian, Moore, Hatler, & Taylor, …show more content…
It has been reported that static-stretching can possibly reduce muscular performance and many studies have questioned the role of static-stretching in the warm-up as a means of preventing injuries and enhancing athletic performance.
Marek et al. (2005) examined the short-term effects of static and proprioceptive neuromuscular facilitation (PNF) stretching on peak torque (PT), mean power output (PO), active range of motion (AROM), passive range of motion (PROM), electromyographic (EMG) amplitude, and mechanomyographic (MMG) amplitude of the vastus lateralis and rectus femoris muscles during voluntary maximal concentric isokinetic leg extension at 60 and 300/s. Both static and PNF stretching reduced PT (p = .051) and PO (p = .041), which showed both types of stretching cause similar deficits in strength, power output, and muscle activation at both slow (60/s) and fast (300/s) velocities (Marek et al.,

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