Time of Day and Muscle Strength: A Circadian Output?
Collin M. Douglas, Stuart J. Hesketh, Karyn A. Esser
Abstract
For more than 20 years, physiologists have observed a morning-to-evening increase in human muscle strength. Recent data suggest that time-of-day differences are the result of intrinsic, nonneural, muscle factors. We evaluate circadian clock data sets from human and mouse circadian studies and highlight possible mechanisms through which the muscle circadian clock may contribute to time-of-day muscle strength outcomes.
Topics & Concepts
Circadian rhythmMorningEveningCircadian clockMuscle strengthTime of dayHuman muscleBiologyInternal medicineEndocrinologyPeriod (music)Skeletal muscleMedicineAnimal scienceAstronomyPhysicsAcousticsCircadian rhythm and melatoninSpaceflight effects on biologyDietary Effects on Health