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Static Stretching

Static stretching is most often recommended for general fitness. With this type, you slowly ease into the position

and hold for 10 to 30 seconds before slowly releasing the stretch. Static stretching should be performed with warm

muscles, such as after a warm-up or at the end of a workout. There are two forms of static stretching.

Active Static: This form of stretching is used in yoga and martial arts. The stretch is held by the strength of agonist

muscles (muscles responsible for the movement). Think of the stretch across the upper body during the Warrior II

pose in yoga. Your arms are extended as your back, chest, and shoulders are stretched. The muscles of the arms

and shoulders are the agonist muscles that allow you to hold this stretch.

Passive Static: During this type of stretching, you hold the limb to perform the stretch without any assistance such

as a bar or bands. Think of a standing quadriceps stretch in which you bend your leg behind you and hold the foot,

pulling the heel in close to your bottom, which stretches the front of the upper thigh.


Dynamic Stretching

Dynamic stretching is stretching with movement. The body transitions gradually into a position and this movement

is repeated as you increase your reach and range of motion. If you have ever taken a group exercise class, you

have likely engaged in dynamic stretching. Movements such as alternating knee lifts repeatedly stretch the hamstrings

while keeping the body in motion. Research has found that dynamic stretching is less beneficial than static stretching

for increasing range of motion, but unlike static stretching, it is ideal during the pre-workout phase because it gently

warms muscles while also stretching them.


PNF Stretching

PNF stands for Proprioceptive Neuromuscular Facilitation. This type of stretching is often referred to as partner

stretching because two people are needed to perform the movements. There are many forms of PNF, but most

involve an isometric hold followed by a static stretch of the same muscle group. An example of PNF is a hamstring

stretch where one person lies on her back with the right leg extended straight up into the air. The second person

grasps the ankle and gently presses the leg towards the other person’s head to stretch the hamstring. The pressure

is released and then the stretch is repeated.

While PNF is as effective as static stretching for improving range of motion, it is less practical because of the necessity

of a partner. It is most often used in clinical and fitness settings for training and rehabilitation.


Ballistic Stretching

This type of stretching uses bouncing movements to create momentum which moves the muscle into the stretch.

For example, instead of holding a hamstring stretch you would quickly reach towards your toes and release repeatedly

in short bursts of movement. Fitness trainers have long been warned about the dangers of ballistic stretching because

it can cause a stretch reflex that injures the muscle. Current recommendations from the ACSM state that ballistic

stretching can improve flexibility as well as static stretching when it is performed properly. It is best considered for

those participating in ballistic exercises such as basketball and other athletics.

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