• exercises
  • Many popular high-intensity exercise programs feature jumps, hops or skips to increase power output in lower-body muscles, but omit exercises for developing upper-body power. (acefitness.org)
  • If you exercise for the purpose of improving your performance in sports such as tennis, softball, baseball, volleyball or Ultimate Frisbee, or if you want to improve your ability to perform daily tasks such as carrying a bag, caring for young children or gardening, it is important to perform exercises to improve the strength and power of the muscles of the upper back, shoulders, arms and hips. (acefitness.org)
  • Do a complete dynamic warm-up to properly prepare your muscles before beginning the high-intensity exercises of the working sets. (acefitness.org)
  • Here are six effective exercises to incorporate into your clients' programs to help them activate and strengthen this powerful lower-body muscle. (acefitness.org)
  • I often hear the same old advice to use perfect form on all exercises (Bring the weight slowly up and contract my muscles and then bring it slowly down and stretch my muscles). (exrx.net)
  • strength
  • While strength is the physical ability to generate a high amount of muscle force, power is the ability to generate a high amount of force in a short period of time. (acefitness.org)
  • The plyometric movement stresses those muscle fibers that have been activated by the strength training movement. (wikipedia.org)
  • This is important because these muscle fibers have the greatest potential for growth and strength. (wikipedia.org)
  • Other factors also play a role: Muscle Strength Larger muscles are able to generate higher amounts of force and are therefore able to produce larger GRF's Elastic Energy Storage Cheetahs use flexion and extension of the spine to contribute significantly to speed by increasing foot contact time and swing time Footspeed Sprint (running) He, J. P., R. Kram, et al. (wikipedia.org)
  • sprinters
  • Other studies have shown that particular muscle fiber types are favored in sprinters versus non-sprinters, as well as within different levels of sprinters. (wikipedia.org)
  • torque
  • As a general rule, the larger the moment arm of a muscle, the greater torque it can produce with the same amount of force. (wikipedia.org)
  • In 1986, a study comparing factors such as conduction velocity, twitch torque, twitch rise time, and half-relaxation of stimulated tibial muscle found evidence that the conduction velocity of individual muscle fibers types may be another parameter to include in the size principle. (wikipedia.org)
  • calf muscles
  • Hunter's previous research indicates that ethnic groups such as African-Americans tend to have longer limbs and shorter calf muscles and thus longer Achilles tendons than Caucasians, which may be a contributing factor to why some African-Americans seem to excel in sports involving running. (abovetopsecret.com)
  • It can also be executed by using a weight, such as a barbell, to provide resistance to the action of the calf muscles. (wikipedia.org)
  • partly
  • This can be explained partly by the finding that moment arms of muscles at the knee and ankle joint in the cheetah are proportionally larger than those of the greyhound. (wikipedia.org)
  • exercise
  • That said, about 40 percent of your muscles can be influenced through exercise and training. (livestrong.com)
  • Skipping rope can be considered a compound exercise since multiple muscle groups are worked during each session. (livestrong.com)
  • It is important to include some power training in an exercise program to help improve the speed at which your muscles generate force. (acefitness.org)
  • Exercise & building muscle mass can impact body fat over time: the more effort/work you expend (best make it fun so more likely to continue) & what you do most of the time have the most impact. (healthtap.com)
  • It's just that my major concern about exercise speed is for the back muscles, because that's my weakest point. (exrx.net)
  • And doesn't not doing full range of motion on an exercise give you muscle imbalances over time? (exrx.net)
  • S-glutathionylation: fsTnI was found to be S-glutathionylated at Cys133 in rodent fast-twitch skeletal muscle and in human type II muscle fibers after exercise, which increased Ca2+ sensitivity of the contractile apparatus. (wikipedia.org)
  • MyoD is expressed at extremely low and essentially undetectable levels in quiescent satellite cells, but expression of MyoD is activated in response to exercise or muscle tissue damage. (wikipedia.org)
  • In sports which require repeated short bursts of exercise however, the anaerobic system enables muscles to recover for the next burst. (wikipedia.org)
  • troponin
  • The TNNI2 gene is located at 11p15.5 in the human chromosomal genome, encoding the fast twitch skeletal muscle troponin I (fsTnI). (wikipedia.org)
  • More recent studies reported that subunits of fast skeletal muscle troponin (fsTnI, fsTnT, fsTnC) were expressed at significant levels in smooth muscle cells of mouse blood vessels, bladder and bronchi. (wikipedia.org)
  • Crystallographic structure of fsTnI in troponin complex from chicken fast skeletal muscle showed an overall structure similar to that of cardiac troponin. (wikipedia.org)
  • Based on the crystal structure, a schematic illustration (Fig. 3) was proposed to show the conformational changes in troponin during muscle activation and relaxation. (wikipedia.org)
  • synapse
  • The specific patterning of synapse development at the neuromuscular junction shows that the majority of muscles are innervated at their midpoints. (wikipedia.org)
  • metabolic
  • The skeletal muscles of mammals account for ∼40% of body weight and for ∼25% of the basal metabolic rate ( Rolfe and Brown, 1997 ). (rupress.org)
  • Human physiology dictates that a runner's near-top speed cannot be maintained for more than 30-35 seconds due to the depletion of phosphocreatine stores in muscles, and perhaps secondarily to excessive metabolic acidosis as a result of anaerobic glycolysis. (wikipedia.org)
  • increase
  • Building fast-twitch muscle fibers can help increase your speed and quickness. (livestrong.com)
  • The increase in bloodflow and nutrient transport to your muscles will increase athletic performance, increase muscle size, fullness, vascularity, and even promote fat loss while working out. (anabolicminds.com)
  • Exceeding this amount hasn't been shown to increase muscle growth. (bodybuilding.com)
  • The average body weight increase for the subjects during the overfeed was 17 pounds, of which 67 percent was fat, and only 33 percent was muscle mass. 6 This research shows that excess calories can lead to both fat mass and lean mass, and it seems to support the idea of a traditional bulk. (bodybuilding.com)
  • reflexes
  • Since races at this distance can last around six or seven seconds, having good reflexes and thus getting off to a quick start is more vital in this race than any other. (wikipedia.org)
  • Muscles, Reflexes, and Locomotion. (wikipedia.org)
  • patterns
  • Coupled with the fact that AChR density is the result of axonal contact instead of the cause, the structural patterns of muscle fibers can be attributed to both myotatic growth as well as axonal innervation. (wikipedia.org)
  • hypertrophy
  • The first described occurrence of polar overdominance in sheep was shown after finding that a mutant Callipyge allele must be inherited from the father to cause a condition called muscle hypertrophy. (wikipedia.org)
  • Muscle hypertrophy only manifests itself in the offspring approximately one month after birth. (wikipedia.org)
  • energy
  • FT fibers create energy anaerobically, that is, without oxygen. (blogspot.com)
  • In addition, allow for proper rest to ensure that the involved muscles replenish ATP (energy) and experience neural recovery. (acefitness.org)
  • A sprinter is a road bicycle racer or track racer who can finish a race very explosively by accelerating quickly to a high speed, often using the slipstream of another cyclist or group of cyclists tactically to conserve energy. (wikipedia.org)
  • Some diahitcomponents that provide little or no food energy, such as water, minerals, vitamins, cholesterol and fiber, may still be necessary to health and survival for other reasons. (wikipedia.org)
  • Carbohydrates that are not easily absorbed, such as fiber, or lactose in lactose-intolerant individuals, contribute less food energy. (wikipedia.org)
  • High energy phosphates are stored in limited quantities within muscle cells. (wikipedia.org)
  • genes
  • The fast TnI-fast TnT gene pair represents the original TnI and TnT genes (Fig. 1). (wikipedia.org)
  • Sustained MyoD expression is necessary for retaining the expression of muscle-related genes. (wikipedia.org)
  • KAP1 is localized at muscle-related genes in myoblasts along with both MyoD and Mef2 (a myocyte transcription enhancer factor). (wikipedia.org)
  • Setdb1 appears to be necessary to maintain both MyoD expression and also genes that are specific to muscle tissues because reduction of Setdb1 expression results in a severe delay of myoblast differentiation and determination. (wikipedia.org)
  • amount
  • The main reason you should select 30-40 grams of protein is that this amount contains the optimal amount of branched-chain amino acid leucine to encourage muscle growth. (bodybuilding.com)
  • Ballistic lifts force the muscles to produce the greatest amount of force in the shortest amount of time. (wikipedia.org)
  • At the same time, the muscle would cause a smaller change in joint angle for the same amount of length change. (wikipedia.org)
  • in other words, the size of the motor unit is proportional to the amount of muscle fibers it innervates. (wikipedia.org)
  • fibre
  • These cells were distinguished from muscle fibre nuclei and the motor end plate, making the third component of the tripartite synaptic model. (wikipedia.org)
  • movements
  • Fig. 1 diagrams the major intracellular movements of Ca 2+ that take place during a twitch. (rupress.org)
  • While the hips aren't necessarily an upper-body muscle, optimal power for many upper-body movements-from throwing a ball to punching an opponent to picking up a young child-is derived from the ability of the hips to generate force, which is then transmitted and released through the shoulders and arms. (acefitness.org)
  • kinase
  • Agrin binds to a muscle-specific kinase (MuSK) receptor in the post-synaptic membrane, and this in turn leads to downstream activation of the cytoplasmic protein Rapsyn. (wikipedia.org)
  • stretch
  • Henneman compared the order of individual motoneurons firing during a stretch of the triceps muscle of a decerebrate cat to the amplitude of their impulses, in order to determine if and when each size motoneuron fired. (wikipedia.org)
  • They are frequently done on a raised surface with the heel lower than the toes to allow a greater stretch on the working muscles. (wikipedia.org)
  • time
  • These pumps help transport and shuttle muscle building compounds such as Carnitine, Amino Acids, B-vitamins, Glycine Propionyl L-Carnitine, and Beta Alanine which will fuel your muscles, improve athletic performance and enhance recovery time. (anabolicminds.com)
  • We found that these highly trained subjects gained muscle and lost fat at the same time, with minimal change in their total bodyweight. (bodybuilding.com)
  • It has been shown that the fastest speeds are attained when the product of the foot contact time and vertical GRF are decreased to minimums which provides enough time for the swinging limb to get in position for the next step. (wikipedia.org)