Physical activity refers to any bodily movement produced by contraction of the skeletal muscles that results in energy expenditure, examples are walking, running,exercise, etc.

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Contraction at psychology-glossary.com■■■■■
"Contraction" refers to the shortening and tightening of a muscle, typically as a result of nerve stimulation. . . . Read More
Anaerobic at psychology-glossary.com■■■■
Anaerobic term used to refer to "without oxygen" In the psychology context, the term "anaerobic" is not . . . Read More
Muscle spindle at psychology-glossary.com■■■■
Muscle spindle is defined as a muscle stretch receptor oriented parallel to skeletal muscle fibersthe . . . Read More
Focal hand dystonia at psychology-glossary.com■■■■
Focal hand dystonia means (FHD) "musician’s cramp", refers to a condition in which the touch responses . . . Read More
Proprioception at psychology-glossary.com■■■■
Proprioception is the position of the body in extra-personal spaceneuromuscular facilitation technique . . . Read More
Acetycholine at psychology-glossary.com■■■■
Acetycholine refers to a neurotransmitter involved in REM sleep, that plays a role in learning, memory, . . . Read More
Letdown at environment-database.eu■■■
A Letdown is the process in a Cow where physical stimulation causes a release of oxytocin and the contraction . . . Read More
Myotonic dystrophy at psychology-glossary.com■■■
Myotonic dystrophy refers to a slowly progressing disease that onsets anytime from childhood through . . . Read More
Labor at psychology-glossary.com■■■
Labor refers to the period of involuntary contractions of the uterine muscles that occurs prior to giving . . . Read More
Actin at psychology-glossary.com■■■
Actin is a structural protein of muscle that works with myosin in permitting muscular contraction Actin . . . Read More