Sentences with phrase «many muscle fibres»

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.

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

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.

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.

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.

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

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.

«That said, you can recruit and overload more muscle fibres by lifting a lighter resistance at a higher number of reps and still achieve equally as effective strength gains and muscular hypertrophy — provided you train to the muscle to fatigue.»

If you want to place an even greater focus on your abdominal muscle fibres, squeeze them hard at top of each rep, and exhale.

'' Glutamine: «Glutamine is an amino acid that provides numerous benefits for gaining muscle, such as aiding muscle growth by increasing levels of leucine in muscle fibres, helping to decrease muscle breakdown.

Your legs respond better to slightly higher rep ranges because the lower body is predominantly comprised of slow twitch muscle fibres.

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

By progressing in the intensity, you can ensure that you are recruiting the bigger muscle fibres and providing a more taxing stimulus.

«While training for muscular hypertrophy will result in some strength benefit, if strength is the primary goal, the training must focus on not just building the muscle fibres, but training the central nervous system to efficiently fire the muscle fibres,» says personal trainer Sofia Toumbas.

The fast twitch muscle fibres engaged during fast lifts are less energy efficient than their slower cousins, meaning they chew through more fuel, according to Ball State University researchers.

The ability for growing muscle fibres for improved strength and size of your muscles is written in our genes.

«There is no ideal training protocol for glute development, as they contain both fast - and slow - twitch muscle fibres.

These strands increase both size and strength of muscle fibres, which result in the increase of muscle mass when you lift regularly.

As more muscle fibres contract, your strength increases.

From this point, the muscle fibres run up and towards the ribs, attaching to the lowest three.

This is thought to recruit more muscle fibres and stimulate the muscle growth the best.

It consists of short vertical muscle fibres.