Biology of Sport

Abstract

4/2022 vol. 39
Original paper

The effect of caffeine, nap opportunity and their combination on biomarkers of muscle damage and antioxidant defence during repeated sprint exercise

Mohamed Romdhani 1, 2
,
Nizar Souissi 2
,
Ismail Dergaa 3
,
Imen Moussa-Chamari 4
,
Yassine Chaabouni 5, 6
,
Kacem Mahdouani 5, 6
,
Olfa Abene 7
,
Tarak Driss 8
,
Karim Chamari 9
,
Omar Hammouda 8, 10
  1. High Institute of Sport and Physical Education of Sfax, Sfax University, Sfax, Tunisia
  2. Physical activity, Sport and health, UR18JS01, National Observatory of Sports, Tunis, Tunisia
  3. PHCC, Primary Health Care Corporation, Doha, Qatar
  4. College of Education, Physical Education Department, Qatar University
  5. Department of biochemistry, CHU Ibn Jazzar, Kairouan, Tunisia
  6. Laboratory of Analysis, Treatment and Valorization of Pollutants of the Environment and Products (LATVEP) Faculty of pharmacy, University of Monastir, Monastir, Tunisia
  7. Regional center of sport medicine, Kairouan, Tunisia
  8. Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UFR STAPS, UPL, Paris Nanterre University, Nanterre, France
  9. ASPETAR, Qatar Orthopedic and Sports Medicine Hospital, Doha, Qatar
  10. Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Sfax, Tunisia
Biol Sport. 2022;39(4):1033–1042
DOI: https://doi.org/10.5114/biolsport.2023.112088
Online publish date: 2021/12/31
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To investigate the effect of 20 min nap opportunity (N20), 5 mg · kg-1 of caffeine (CAF) and their combination (CAF+N20) on the biochemical response (energetic biomarkers, biomarkers of muscle damage and enzymatic antioxidants) to the running-based anaerobic sprint test. Fourteen highly trained male athletes completed in a double-blind, counterbalanced and randomized order four test sessions: no nap with placebo (PLA), N20, CAF and CAF+N20. Compared to PLA, all treatments enhanced maximum and mean powers. Minimum power was higher [(mean difference) 58.6 (95% confidence interval = 1.31–116) Watts] after CAF and [102 (29.9–175) Watts] after CAF+N20 compared to N20. Also, plasma glucose was higher after CAF [0.81 (0.18–1.45) mmol·l-1] and CAF+N20 [1.03 (0.39–1.64) mmol·l-1] compared to N20. However, plasma lactate was higher [1.64 (0.23–3.03) mmol ·l-1] only after N20 compared to pre-exercise, suggesting a higher anaerobic glycolysis during N20 compared to PLA, CAF and CAF+N20. Caffeine ingestion increased post-exercise creatine kinase with [54.3 (16.7–91.1) IU·l-1] or without napping [58.9 (21.3–96.5) IU·l-1] compared to PLA. However, superoxide dismutase was higher after napping with [339 (123–554) U·gHB-1] or without caffeine [410 (195–625) U·gHB-1] compared to PLA. Probably because of the higher aerobic glycolysis contribution in energy synthesis, caffeine ingestion resulted in better repeated sprint performance during CAF and CAF+N20 sessions compared to N20 and PLA. Caffeine ingestion resulted in higher muscle damage, and the short nap enhanced antioxidant defence with or without caffeine ingestion.

Keywords

psychostimulant, daytime sleep, ergogenic aid, inflammation, oxidative stress, high-intensity exercise

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