Fatigue and Recovery Severe muscular exercise diminishes the capacity of muscles for further activity. This depressant action of strenuous activity is called fatigue. It must be distinguished from the subjective sensations of tiredness, sleepiness and muscular soreness which frequently accompany it. Continued stimulation of sensory organs, such as those of vision and hearing, may result in a diminished response, a process known as adaptation. It is not the same as fatigue, however, since changing the strength of the sensory stimulus slightly usually restores the full vigor of the sensory response. The synapses between neurones in the central nervous system and the junction between nerve fibers and muscle fibers (motor end plate) are readily fatigued by continued activity and it is probable that so-called muscular fatigue in the exercising subject is largely a matter of loss of the capacity for transmission of nerve impulses to the muscle, not exhaustion of the muscle itself. The development of fatigue in a single organ which is subjected to repeated stimulation can be followed and the extent of the reduction in its functional capacity can be predicted with a high degree of accuracy. This is not so easy in the case of so-called general fatigue. The fatigue resulting from the tedious repetition of dull, easy work is akin to boredom and it eludes measurement.		Home Pace Motivation Measures of Endurance Computation of Dietary Requirement Work Efficiency Maximum Steady State Work Inefficiency of Anaerobic Work Estimation of Work Efficiency Efficiency of Grade Climbing Low Economy of Slow Work Maximum Rate of Work Levers of the Body Fatigue and Recovery General Fatigue Symptoms Anxiety State Organic Fatigue Cortical Motor and Sensory Centers Effect of Exercise on Mental Work Visual Fatigue Muscular Fatigue Fatigue Prevention and Recuperation