The First-Night Effect: Sex Differences in the Impact of Unfamiliar Sleeping Environment on Strength and Muscular Endurance Performance in Resistance-trained Participants
Introduction: The first-night effect, characterized by disturbed sleep in an unfamiliar environment, may impair next-day physical performance. However, whether this response differs between men and women remains unclear. This study investigated sex differences in the effects of sleeping in an unfamiliar environment on strength and muscular endurance in resistance-trained individuals.
Methods: Thirty-two resistance-trained participants (16 women, 16 men; 23 ± 4 years) completed a randomized, counterbalanced crossover study involving two conditions: sleeping for 8 h at home or in the laboratory. The following morning, participants performed bench press and back squat strength tests across 25-90%1RM, followed by muscular endurance tests to failure at 65%1RM.
Effects of Sleep Restrictions on Maximal Strength, Muscle Power, and Strength Endurance in Resistance-trained Women.
Effects of Sleep Privation on Sensorimotor Integration of the Upper Limb During a Manual Endurance Test in Healthy Volunteers-Physiological Study