Physiological response and physical performance after 40 min and 90 min daytime nap opportunities

Omar Boukhris, Khaled Trabelsi, David W Hill, Hsen Hsouna, Raouf Abdessalem, Achraf Ammar, Omar Hammouda, Cain C T Clark, Piotr Zmijewski, Peter Duking, Tarak Driss, Hamdi Chtourou

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This study aimed to examine the impact of 40-min and 90-min naps on performance in the 5-m shuttle run test (5mSRT) and on various physiological and perceptual measures. Sixteen male athletes (20 ± 3 years, 173 ± 7 cm, 67 ± 7 kg) performed the 5mSRT after a 40-min nap (N40), after a 90-min nap (N90), and in a no-nap, control condition (N0). The 5mSRT involves six repetitions of 30 s of all-out exercise. Total distance (in the six repetitions) and highest distance (in a single repetition) in the 5mSRT were greater after naps than in N0 (p < 0.001), and the total distance, which reflects the anaerobic capacity, was greater in N90 than in N40 (p < 0.05). Physiological and perceptual responses were favourable in both nap conditions (p < 0.01), more so in N90 than in N40 (p < 0.05). Together, the results support the contention that physiological/perceptual responses after napping contribute to improved exercise performance and that longer naps are more effective.
Original languageEnglish
Pages (from-to)881-894
Number of pages14
JournalResearch in Sports Medicine
Issue number6
Early online date25 May 2022
Publication statusPublished - 2 Nov 2023


  • Siesta
  • recovery
  • blood pressure
  • temperature
  • heart rate variability

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Orthopedics and Sports Medicine

Cite this