Muscle contraction

Theis, Korff, Kairon, and Mohagheghi in the Journal of Clinical Biomechanics showed that there is an actual increase in muscle and tendon length after a bout of stretching the muscle. They hypothesize that the transient increase after an acute session of stretching could be increased if the protocol was continued over a period of time (4). This increase in muscle length might be a great importance to a person with spastic cerebral palsy in lessening the amount of tension placed on joint…

Lab 3: Stimulus strength vs. muscle force production Introduction: The goal of this lab is to determine the relationship between stimulus amplitude (strength) and the contractile properties (i.e. force) of the frog gastrocnemius muscle. Skeletal muscle is composed of bundles of muscle fibers called myofibers. These fibers are themselves composed of myofibrils, which are comprised of the ordered arrangement of actin and myosin. These proteins slide past each other in the presence of calcium…

‘Protein’ plays a vital role for our body as we cannot survive without it. Protein is an important building block of bones, muscles, cartilage, skin and blood. It is also a macronutrient, means the body needs relatively large amount of it. Recently, almost everyone starting from the teenage ageto the age of 30-40 wants to stay healthy . There are bodybuilders too who are working hard to accomplish their goal, they ingest protein shakes. Since protein shakes fulfill the purpose of deliverying the…

automatic response of the body is to increase cardiovascular output when activity rate increases; in order to raise oxygen levels in the blood for cell respiration. However, this response is varied depending on the type of activity being undertaken by muscles. A higher intensity exercise such as running causes a larger cardiovascular response however in the increase in mean arterial pressure is small. Whereas a lower intensity exercise causes a low cardiovascular response but the increase in…

Here ill prove too you that it is worth it to maybe not heavy lift but at least do some type of lifting to help your muscles, bones, and cardiovascular system. Something big that not just women but men don’t know is, lifting weights speeds up your metabolism and that is the biggest thing you need when trying to lose weight. The older you get the slower your…

Tone is a normal state of balance in bodily tissue such as muscle and skin. In resting muscles, it is a state of partial contraction of a muscle to a pre-set length that serves to maintain posture, organ function, such as digestion, and reflexes. Generally speaking, a nerve from the spinal cord, spinal nerve, will grow from the spine to a muscle, it splits to form motor neurons, then contacts the muscle fiber at a point called the neuromuscular junction. This formation, in conjunction with…

difficult to predict endurance performance in elite athletes using VO2 max. International midfielders have high endurance, but endurance can be limited by the respiratory capacity of the muscles. According to Davies et al. (1982), endurance of running is more dependent on the amount of mitochondria in the muscles than VO2 max with endurance…

INTRODUCTION The proteins actin and myosin is the caused of excitement of skeletal muscle. It can be made chemical, electrical and mechanic. When the muscles are use many times to the maximum force, the muscle will decline. That decline is called muscle fatigue. 1 L-Carnitine is a compound that makes the increment of the muscle performace. L-Carnitine is found in the entire cell on the body, its function is to change fats to energy and transport the fatty acids to the mitochondria. L-Carnitine…

surprising to know good flexibility of hamstring do more evidence in improving performance rather than as a strong predictor to prevent a hamstring injury. Current evidences have recognized eccentric strengthening exercises moving throughout a hamstring muscle length is more effective in stimulating adequate adaptation to loading compared to flexibility/stretching exercise. Askling et al conducted an identical study in footballers and the result showed that a rehabilitation protocol focusing…

skeptical of the risk factors in the use of creatine, but studies have shown this product is proven to be safe when taken properly. This supplement is effective and has been shown to increase muscle mass and enhance muscle performance. Experts also have proven that creatine helps prevent muscle cell damage and reduces muscle fatigue after training. Some individuals may think this product is targeted towards young bodybuilders, but it is highly efficient in older individuals. The most remarkable…