What is the difference between static and dynamic stretching?

Static stretching holds a muscle in an elongated position for a period, whereas dynamic stretching moves a joint through its range with controlled movement; they apply the elongating stimulus differently and are discussed for different purposes.

Does stretching prevent muscle soreness after exercise?

Systematic review evidence indicates that stretching before or after exercise produces little or no meaningful reduction in post-exercise muscle soreness.

Flexibility and Mobility Training

Flexibility and mobility training uses stretching and range-of-motion exercise to develop or maintain the ability of joints and soft tissues to move through their available range. It includes static, dynamic, and proprioceptive neuromuscular facilitation methods, each applying an elongating stimulus to muscle-tendon units and the nervous system that controls their tolerance to lengthening.

Definition

Flexibility and mobility training is the planned application of stretching or range-of-motion exercise that elongates muscle-tendon units and moves joints through their range, intended to increase or maintain range of motion and the capacity for unrestricted movement.

Scope

This entry covers stretching and range-of-motion exercise as a therapeutic stimulus: the principal methods (static, dynamic, ballistic, and proprioceptive neuromuscular facilitation), the distinction between joint range of motion and functional mobility, and what the evidence indicates about acute and longer-term effects. It treats flexibility training as a reference subject and does not prescribe individualized stretching routines.

Core questions

What is the difference between flexibility (tissue extensibility and joint range of motion) and mobility (usable, controlled movement)?
Which stretching methods are used, and how do static, dynamic, and proprioceptive neuromuscular facilitation differ?
What does the evidence show about the acute effects of stretching on performance and range of motion?
Where does flexibility training fit within an overall exercise program?

Key concepts

Range of motion
Joint flexibility versus functional mobility
Static stretching
Dynamic stretching
Ballistic stretching
Proprioceptive neuromuscular facilitation (PNF)
Stretch tolerance
Muscle-tendon extensibility

Mechanisms

Stretching applies a tensile, elongating load to muscle-tendon units and surrounding connective tissue while the nervous system regulates the muscle's response to lengthening. Acute increases in range of motion are attributed substantially to changes in the tolerance to stretch — the willingness and ability of the nervous system to permit elongation — alongside transient changes in tissue properties. Different methods deliver the stimulus differently: static stretching holds an elongated position, dynamic stretching moves through range under control, and proprioceptive neuromuscular facilitation alternates contraction and relaxation to exploit neuromuscular reflexes. Reviews indicate that acute static stretching can transiently reduce maximal force or power output, which is why the timing and type of stretching relative to activity is considered.

Clinical relevance

Flexibility and mobility work is used in rehabilitation to address restricted range of motion and to maintain joint mobility, and it is one component of comprehensive exercise programs. As a reference topic, this entry explains how stretching methods apply an elongating stimulus and what is known about their effects; it does not provide individualized stretching prescriptions or treatment instructions.

Evidence & guidelines

Systematic reviews summarize the acute effects of stretching on range of motion and performance and examine whether stretching prevents or reduces post-exercise muscle soreness, with the evidence indicating limited effect on soreness. American College of Sports Medicine guidance situates flexibility exercise within overall exercise prescription as one of the trainable components of fitness.

History

Stretching has long been part of physical and athletic training, and proprioceptive neuromuscular facilitation techniques developed within mid-twentieth-century neurorehabilitation. More recent systematic reviews have refined understanding of the acute effects of stretching and tempered earlier assumptions about its role in injury and soreness prevention.

Debates

Does pre-activity static stretching impair performance?: Reviews indicate that prolonged acute static stretching can transiently reduce maximal strength and power, prompting debate over the type, duration, and timing of stretching relative to activity; shorter durations and dynamic methods are often discussed as alternatives.
Does stretching prevent or reduce muscle soreness?: Systematic review evidence indicates that stretching before or after exercise has little or no effect on delayed-onset muscle soreness, contrary to a common assumption.

Seminal works

behm-2016
herbert-2011

Frequently asked questions

What is the difference between static and dynamic stretching?: Static stretching holds a muscle in an elongated position for a period, whereas dynamic stretching moves a joint through its range with controlled movement; they apply the elongating stimulus differently and are discussed for different purposes.
Does stretching prevent muscle soreness after exercise?: Systematic review evidence indicates that stretching before or after exercise produces little or no meaningful reduction in post-exercise muscle soreness.