Sentences with phrase «produced by the contraction»

According to the American College of Sports Medicine (ACSM), a physical activity it is «any bodily movement that is produced by the contraction of skeletal muscle and that substantially increases energy expenditure.»

Not exact matches

Tetanus is a medical condition characterized by a prolonged contraction of skeletal muscle fibers, the primary symptoms are caused by tetanospasmin, a neurotoxin produced by the Gram - positive, obligate anaerobic bacterium Clostridium tetani.

The resulting rhythmic signals produced by this transfer of cations are what support the synchronous contraction of our heart muscles and neuronal firing in parts of the brain, like the thalamus, which helps regulate our sleep - wake cycle, or circadian rhythm.

Other genetic defects associated with hypertrophic cardiomyopathy — six different genes have been linked to the disease — may work similarly by producing abnormal proteins involved in contraction, says Sweeney.

Good arguments exist that the central regions should collapse first, producing a condensed protostar whose contraction is halted by the large buildup of thermal pressure when radiation can no longer escape from the interior to keep the (now opaque) body relatively cool.

Massage may help to decrease pre-labour anxiety and promote the release of oxytocin, which is the natural hormone produced by the body to stimulate contractions.

Training in this manner produces a phenomenon known as «post activation potentiation» (PAP) by which muscular performance is enhanced as a result of previous contractions.

These variations are characterized by their function within the muscle, namely the velocity of contraction they produce.

There are many blood vessels in addition which have smooth muscles, and many of these can potentially go into a state of contraction with sympathetic stress overload, resulting in cramps, spasms and the many and varied other symptoms produced by circulatory insufficiency.

The ability of a muscle to produce full motor - unit activation may be enhanced when preceded immediately by a contraction of the muscle's antagonist.

Eccentric - specific gains produced by neural mechanisms might not transfer well to COD ability, because of differences between the strength training exercise and the COD maneuver in terms of both movement pattern, and contraction velocity.

Eccentric - specific gains produced by peripheral mechanisms might be reasonably expected to transfer well to COD ability, because the stiffness of the passive elements within the muscle is not expected to be affected by the movement pattern, and may actually be increased by the velocity of the contraction (Rehorn et al. 2014), making the properties of the passive elements even more relevant for high - velocity contractions, than for low - velocity contractions.

Since the moment arm lengths for hip extension appear to be similar between the semitendinosus, semimembranosus and biceps femoris (long head)(Dostal et al. 1986), this may imply that one muscle in each subgroup is better suited for producing large excursions with high joint angular velocities while the other may be better suited for performing very forceful muscular contractions over short excursions (see review by Lieber and Fridén, 2000).

Bourne et al. (2015) found that the Nordic hamstring curl produced preferentially higher semitendinosus EMG amplitude; but again, Zebis et al. (2013) did not report any preferential activation; Mendiguchia et al. (2013a) reported preferential biceps (short head) activation; and Ditroilo et al. (2013) reported that biceps femoris EMG amplitude exceeded maximum voluntary eccentric contraction levels by some margin.

When sarcomeres attempt to reduce length by increasing the amount of actin and myosin filaments that overlap, this produces tensile force within the muscle fiber that ultimately leads to muscle contractions.

But in the southern hemisphere, the poleward contraction of the high clouds is balanced by an expansion of the already extensive low cloud decks, which ends up blocking more sunlight and producing a small surface cooling.