The effects of sleep loss on capacity and effort.

Sleep loss appears to affect the capacity for performance and access to energetic resources. This paper reviews research examining the physical substrates referred to as resource capacity, the role of sleep in protecting that capacity and the reaction of the system as it attempts to respond with effort to overcome the limitations on capacity caused by sleep loss. Effort is the extent to which an organism will exert itself beyond basic levels of functioning or attempt alternative strategies to maintain performance.

Sleep and effort in adolescent athletes.

Adolescents' sleep and next day effort was studied in 18 female competitive adolescent athletes. A subjective assessment of the previous night's sleep, their perception of the difficulty of the choices offered and the difficulty of tasks selected was completed before routine lessons. Sleep amount was related to the perception of the difficulty of the task, while awakenings were related to an avoidance of the least preferred maneuvers.

The effect of sleep loss on next day effort.

The study had two primary objectives. The first was to determine whether sleep loss results in a preference for tasks demanding minimal effort. The second was to evaluate the quality of performance when participants, under conditions of sleep loss, have control over task demands.