Sentences with phrase «muscle fibre»

Overexposure to ultraviolet rays WILL cause the complete destruction of muscle fibre.

Muscle damage occurs when micro tears take place within the muscle fibre as a result of intense training.

The firing frequency refers to how fast motor units can be activated and is usually achieved through a power training program, that teaches the nervous system to fire a fast signal to the muscle fibre.

The role of resistance exercise intensity on muscle fibre adaptations.

The third week, your nervous system gets more efficient and muscle fibre synchronization improves.

An increase in muscle fibre size means that those fibres can store more energy, and an increase in muscle fibre count means an increase in physical strength.

We all know how important regular exercise is for our physical, mental and emotional health, but strenuous anaerobic exercises have been reported to enhance the generation of reactive oxygen species (ROS); which in turn can contribute to both the initiation and progression of muscle fibre injury as well as impaired muscle performance.4 Green Tea Extract (GTE) however has been clinically proven to prevent oxidative stress induced by high - intensity training and subsequent muscle breakdown — once again thanks to its EGCG content.5

We will explore the anatomy of a muscle fibre, the nervous system and hormonal control systems of the body.

The power clean improves muscle fibre recruitment and specifically targets the «hard to reach» type 2B fast twitch fibres, which are the biggest and strongest muscle fibres but also the most difficult to enervate.

This is the hormone that deepens the voice, stimulates hair growth on and around the body and ultimately promotes muscle fibre growth.

I seem to recall reading that this is true in Tim Noakes book, the Lore of Running - if I recall correctly, he said that only Fast Twitch A fibres can be converted to another type of muscle fibre, and that Fast Twitch B fibres and, more related to the point I'm trying to make, Slow Twitch fibres, will always remain as their original type of fibre.

So those two other muscle fibre types are meant to be used to exercise is necessary to release growth hormones.

At a very basic level each muscle fibre is made up of smaller fibres called myofibrils.

One of the key determinants of which style of fitness will work for a person is the proportions of muscle fibre types they have, which can be ascertained from whether you perform better at short, sharp, sprint events or endurance activities as well as whether you have a variation of the ACTN3 gene.

This increases muscle fibre activation, improving your lifts and decreasing your risk of injury.

«HRT is also associated with a more efficient organisation of myonuclei, which are essential components for muscle fibre function.

Hormone replacement therapy (HRT) significantly improves muscle function — down to the muscle fibre level — in postmenopausal women, a new study published today [1 May] in The Journal of Physiology shows.

The entire process of muscular contraction, in terms of an identification of the molecules and a description of the chemical reactions in the muscle fibre, has been almost completely explained.

HRT significantly improves muscle function — down to the muscle fibre level — in postmenopausal women, a new study published today [1 May] in The Journal of Physiology shows.

This means that, unlike in humans, two biopsies taken from nearby areas of the muscle can provide very different mixtures of muscle fibre types.

Muscle fibre Aug 29, 2011.

Tests conducted on Monday have revealed that the player has torn semitendinosus muscle fibres in his right thigh.

Explosive, pacey players have a greater number of fast twitch muscle fibres than more balanced players.

These fast twitch muscle fibres take longer to recover as less blood and oxygen flows through them in comparison to slow twitch fibres.

The uterine muscle fibres shorten, or retract, with each contraction, leading to a gradual decrease in the size of the uterus, which helps to shear the placenta away from its attachment site on the mother's uterine wall.

These work by controlling how many muscle fibres are activated at any one time.

But in cases where something does give way, it is usually the muscle fibres that tear, often near the tendon.

Roger Harris of the Animal Health Trust in Newmarket and Alan Wilson of the School of Veterinary Science, University of Bristol, believe that the analysis of individual muscle fibres from a racehorse can indicate its ability to accelerate and to sustain a sprint, as well as its general fitness.

«This is crucial because muscle stem cells need to sense their environment to decide whether to produce more stem cells or to form new muscle fibres.

«For nearly 20 years, we've thought that the muscle weakness observed in patients with Duchenne muscular dystrophy is primarily due to problems in their muscle fibres, but our research shows that it is also due to intrinsic defects in the function of their muscle stem cells,» said Dr. Michael Rudnicki, senior author of the study.

For many years, dystrophin was thought to be a simple structural protein only found in muscle fibres.

In the current study, Dr. Rudnicki and his team discovered that muscle stem cells also express the dystrophin protein, and without this protein, they produce ten-fold fewer muscle precursor cells, which in - turn generate fewer functional muscle fibres.

Experimental approaches such as gene therapy are also being investigated, but Dr. Rudnicki's research suggests that these approaches will have to be modified so that they target muscle stem cells as well as muscle fibres.

«A higher plasma concentration of these proteins means that there has been greater damage of muscle fibres and, therefore, a greater probability of fatigue.

In this manner, the contractions of the leg muscles, repeated continuously during the competition to bear the pace of the race, cause progressive deterioration in the muscle fibres as a result of the very intense and prolonged effort.

The results were conclusive: runners with a higher genetic score had lower levels of creatine kinase and myoglobin in their blood, that is, less damage to muscle fibres, compared to marathon runners with a less favourable score.

Images from an electron microscope show a striking reordering of muscle fibres from a disordered state to the highly regular appearance of young muscle.

Using the optogenetic approach, however, allows the muscle fibres to be stimulated more gently, because the light level can be increased with each pulse.

Muscle fibres in old mice injected with GDF11 doubled in size to match that of 2 - month old mice.

The motor neurons that innervate muscle fibres are essential for motor activity.

Abstract Costameres represent specialized focal adhesion sites of muscle fibres, located between the plasma membrane and sarcomeres, the contractile units of muscle.

We found that even though individual muscle fibres did not change in size, the muscles of HRT users showed greater strength by generating a higher maximum force compared to non-HRT users.

Dihydropyridine receptors actively control gating of ryanodine receptors in resting mouse skeletal muscle fibres

Impaired excitation - contraction coupling in muscle fibres from the dynamin2R465W mouse model of centronuclear myopathy.

Close - up of muscle fibres in a zebrafish with the protein, actin, labelled with green fluorescent protein (GFP) Image credit: Elisabeth Busch, Wellcome Trust Sanger Institute

This reveals information about the structure of the object, for example connective tissues structure and muscle fibres.

Failure of satellite cell activation is also believed to cause skeletal muscle loss as these cells fuse with the muscle fibres and maintain their normal functioning.

Lifting with explosive movements will engage more fast - twitch muscle fibres, which chew through more fuel than their slow - twitch peers according to a study at Ball State University.

Skeletal muscle has different types of muscle fibres with distinct variants of ATP - dependent motor proteins or Myosins.

The myofibrillar hypertrophy focuses on making your muscle fibres bigger.