Acute Capsaicin Supplementation Improved Resistance Exercise Performance Performed After a High-Intensity Intermittent Running in Resistance-Trained Men

• Marcelo Conrado de Freitas ; Jason M. Cholewa ; Valéria leme Gonçalves Panissa ; Gabriela Gallucci Toloi ^[1] ; Hed Carlos Netto ^[1] ; Camila Zanini de Freitas ^[2] ; Renan V. Freire ; Fábio Santos Lira ; Fabrício E. Rossi
  1. [1] Department of Physical Education, Center University of Adamantina (UNIFAI), Adamantina, Brazil
  2. [2] Department of Nutrition, University of Western Sao Paulo (UNOESTE), Presidente Prudente, Brazil
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 36, Nº. 1, 2022, págs. 130-134
• Idioma: inglés
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• Dialnet Métricas: 2 Citas
• Resumen

  • We sought to investigate the acute effects of capsaicin supplementation on the rate of perceived exertion (RPE) and heart rate during high-intensity intermittent exercise (HIIE) and resistance exercise performance executed after HIIE in resistance-trained men. Eleven resistance-trained men completed 2 randomized, double-blind trials: capsaicin condition or a placebo condition. The concurrent exercise session was composed of a 5-km intermittent run (1:1 effort and passive recovery ratio) and subsequent resistance exercise (4 x 70% of 1RM until muscle failure in the half-squat exercise). Heart rate was recorded during HIIE and after the protocol RPE (0-10 scale) was accessed. The resistance exercise performance was analyzed by the maximum number of repetitions performed for each set and the total volume (repetitions x weight lifted). During HIIE, the RPE (capsaicin = 7 +/- 1 vs. placebo = 8 +/- 1 points, t = -3.674, p = 0.005) and mean heart rate (capsaicin = 153 +/- 13 vs. placebo = 158 +/- 12 bpm, t = -2.292, p = 0.048) were significantly lower in the capsaicin compared with placebo condition. For subsequent resistance exercise, there was a significant decrease in volume across time (F = 19.889, p < 0.001, [eta]2 = 0.69) with maximal number of repetitions performed in capsaicin than placebo condition (2,077.6 +/- 465.2 kg vs. 1,838.9 +/- 624.1 kg, p = 0.028, d = 0.43), but the condition vs. set was not significant (F = 0.582, p = 0.632, [eta]2 = 0.06). Acute capsaicin supplementation induced a lower mean heart rate and RPE during HIIE and improved subsequent resistance exercise performance in resistance-trained men.