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The warm-up period before tennis practice or competition is very important for a number of reasons. For many people they think of this time period as a time to warm the muscles and prepare the mind for the tennis that is about to happen. However, this time-period can be utilized in a more opportune way if a structured dynamic warm-up is applied. A dynamic warm-up, if performed appropriately, will increase core body and muscle temperature, increase heart rate, improve functional/dynamic range of motion, improve balance, coordination, strength and stability. It is important to realize that for many tennis-players this may be a large part of the “physical” training that they perform. If the dynamic warm-up is structured appropriately it can certainly improve the athlete in multiple ways while also preparing the body for the upcoming tennis play. Research has consistently shown that a well-performed dynamic warm-up is more beneficial for the athlete than traditional static stretching before physical activity (i.e. tennis). Compared to static stretching, dynamic stretching movements improves strength, speed, power performance in subsequent physical activities.


A great resource that is available highlighting dozens of dynamic stretching exercises is available here (Dynamic Stretching: The Revolutionary New Warm Up Method).

Also, the iTPA CTPS educational program has an extensive section highlighting the science behind the dynamic warm-up period as well as dozens of exercises with coaching cues and descriptions.

Video on Dynamic Stretching:


 
 
Traditional recommendations for warming up before a tennis match have included stretching the major muscles involved in tennis movement. However, research on similar sports to tennis shows dynamic stretching (stretching while moving) yields the greatest benefits during the warm-up to a match. Despite early evidence as far back as the 1960s that static stretching prior to activity did not improve performance, it has been common practice by most coaches and tennis players in warm-up routines.  Contrary to the typical anecdotal belief that static stretching helps improve physical performance, there is only a small amount of evidence suggesting it enhances athletic performance.  Numerous studies, however, demonstrate that traditional “static” stretching actually impairs performance in strength, speed and power activities. Depth jump performance (a good indication of power output) as well as vertical jump height were significantly reduced. This deficit in performance can last approximately 60 minutes after the stretching routine.

Apart from the traditional, misinformed belief that pre-exercise stretching improves performance, a second major reason many coaches and athletes still perform static stretching before activity is to aid in the prevention of injury. The thought that pre-activity static stretching may reduce injury is typically linked to the theory that a “tight” muscle-tendon unit is less compliant, which means that it cannot be stretched to as great a degree. However, current research does not support this assumption and fails to show that pre-activity static stretching reduces the risk of injury.