allaboutdpt

Fatigue Fatigue is a complex phenomenon that affects muscle performance and must be considered in a resistance exercise program. There are several types of fatigue, each with its own definition. Muscle (Local) Fatigue Most relevant to resistance exercise is the phenomenon of skeletal muscle fatigue. Muscle fatigue , the diminished response of a muscle to a repeated stimulus, is reflected in a progressive decrement in the amplitude of motor unit potentials. This occurs during exercise when a muscle repeatedly contracts statically or dynamically against an imposed load. Muscle fatigue is an acute physiological response to exercise that is normal and reversible. It is characterized by a gradual decline in the force-producing capacity of the neuromuscular system. This is a temporary decline that leads to a decrease in muscle strength. The diminished contractile response of the muscle is caused by a complex combination of factors, which include disturbances in the contractile mechani...