Fast oxidative fibers use some aerobic and some anaerobic glycolysis. Fast oxidative fibers need a high amount of myoglobin content. I don’t think it is fast glycolytic because it involves very intense short-term movements that are not employed in the specific exercise of rock climbing. It is definitely not slow oxidative fibers because climbing is too fast paced. The cause of muscle fatigue at this point is not fully understood. Most evidence points to problems in excitation-contraction coupling. During a contraction availability of ATP declines, but most of the time a muscle never completely runs out of ATP. Muscle fatigue could be caused by the terminal cisterna not having enough Ca2+ to continue with the contraction. Another cause of muscle fatigue could be damage to the sarcoplasmic reticulum. When the Sarcoplasmic reticulum becomes damaged, they must be repaired by repolarization. While repairing the Sarcoplasmic reticulum the muscle is unable to contract, which definitely correlates to muscle fatigue. Loss of oxygen while climbing causes me breath heavily at times. My body is breathing heavily to try and make up for oxygen lost while
Fast oxidative fibers use some aerobic and some anaerobic glycolysis. Fast oxidative fibers need a high amount of myoglobin content. I don’t think it is fast glycolytic because it involves very intense short-term movements that are not employed in the specific exercise of rock climbing. It is definitely not slow oxidative fibers because climbing is too fast paced. The cause of muscle fatigue at this point is not fully understood. Most evidence points to problems in excitation-contraction coupling. During a contraction availability of ATP declines, but most of the time a muscle never completely runs out of ATP. Muscle fatigue could be caused by the terminal cisterna not having enough Ca2+ to continue with the contraction. Another cause of muscle fatigue could be damage to the sarcoplasmic reticulum. When the Sarcoplasmic reticulum becomes damaged, they must be repaired by repolarization. While repairing the Sarcoplasmic reticulum the muscle is unable to contract, which definitely correlates to muscle fatigue. Loss of oxygen while climbing causes me breath heavily at times. My body is breathing heavily to try and make up for oxygen lost while