Change in active state during the staircase phenomenon of human muscle.
D000328:Adult; D000818:Animals; D005152:Facial Muscles / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008433:Mathematics; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology*; D051381:Rats; D013933:Thumb / Q000502:physiology; D013997:Time Factors; D014034:Toes / Q000502:physiology