Перегляд вихідного коду сторінки Six Astonishing Knowledge Regarding LEE011

We are thankful to our subjects and to Dr David McIntyre for his technical assistance. ""What is the central question of this study? Repeated high-force contractions of skeletal muscle cause a decline in the force-generating capacity, referred to as muscle fatigue. The influence of fatigue on explosive strength and the associated contractile and neural mechanisms responsible is not known. What is the main finding and its importance? Fatigue exerts a more pronounced influence on explosive force production than on maximal voluntary force production. Contractile and neural mechanisms were considered responsible. The study aimed to assess the influence of fatigue [http://en.wikipedia.org/wiki/Resiquimod Resiquimod] induced by repeated high-force explosive contractions on explosive and maximal isometric strength of the human knee extensors and to examine the neural and contractile mechanisms for the expected decrement. Eleven healthy untrained males completed 10 sets of voluntary maximal explosive contractions (five times 3?s, interspersed with 2?s rest). Sets were separated by 5?s, during which supramaximal twitch and octet contractions [eight pulses at 300?Hz that elicit the contractile peak rate of force development (pRFD)] were evoked. Explosive force, at specific time points, and pRFD were assessed for voluntary and evoked efforts, expressed in absolute terms and normalized to maximal/peak force. Maximal voluntary contraction force (MVCF) and peak evoked forces were also determined. Surface EMG amplitude was measured from three superficial agonists and normalized to maximal compound action potential area. By set?10, explosive [http://www.selleckchem.com/products/lee011.html LEE011] force (47�C52%, P?[http://www.selleckchem.com/products/mi-773-sar405838.html SAR405838] P?��?0.038). Neural efficacy declined by 34%, whilst there was a 15�C28% reduction in quadriceps EMG amplitude during voluntary efforts (all P?��?0.03). There was demonstrable contractile fatigue (pRFD: octet, 27%; twitch, 66%; both P?