Abstracts

Sports and fitness

Search abstracts:

Decreased EMG median frequency during a second bout of eccentric contractions

Article Abstract:

Decreased electromyographic (EMG) median frequency in a second bout of eccentric contractions has been studied. It was found that with repetition of maximal voluntary eccentric contractions greater activation of slow motor units exists. At the same time there is lower activation of fast units.

Injuries, Muscles, Leg, Sports, Leg muscles

---

Effects of eccentric exercise on trunk extensor torque and lumbar paraspinal EMG

Article Abstract:

This article examines the effects of a session of maximal eccentric contractions involving the trunk extensor muscles on electromyographic parameters and torque production in the lumbar paraspinal region. Findings indicate that eccentric contractions resulted in increased electromyographic activity and reduced neuromuscular efficiency in isometric torque production.

Measurement, Torque, Lumbar curve

---

Neuromuscular response of young boys versus men during sustained maximal contraction

Article Abstract:

Results indicate that there are differences in muscle's metabolic and ionic state, between boys and men, which leads to a higher reflex-induced motor units firing rates decrease in men compared with boys. Data show that in men, more fatigable Type II motor units mediate enhanced lactic acid and ions accumulations during fatigue.

France, Comparative analysis

Similar abstracts:

• Abstracts: Enhanced cardiovascular hemodynamics in endurance-trained postmenopausal women athletes. Is there a diassocation of maximal oxygen consumption and maximal cardiac output?
• Abstracts: Cardiovascular responses during prolonged exercise at ventilatory threshold in boys and men. Maximal exercise as a countermeasure to orthostatic intolerance after spaceflight
• Abstracts: Alterations in intracellular calcium signaling of lymphocytes after exhaustive exercise. Antioxidant and redox regulation of cellular signaling: introduction
• Abstracts: Symmetry and reproducibility of kinematic parameters during various running techniques. Leg stiffness and mechanical energetic processes during jumping on a sprung surface
• Abstracts: Comparison of PAEE from combined and separate heart rate and movement models in children. Estimating energy expenditure by heart-rate monitoring without individual calibration

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.