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Título
Resistance Exercise in a Hot Environment Alters Serum Markers in Untrained Males
Autor
Facultad/Centro
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Título de la revista
Frontiers in Physiology
Cita Bibliográfica
Eskandari, A.; Fashi, M.; Saeidi, A.; Laher, I.; Ben Abderrahman, A.; Jabbour, G.; Zouhal, H.; Boullosa Álvarez, D. A. (2020). Resistance Exercise in a Hot Environment Alters Serum Markers in Untrained Males. Frontiers in Physiology, 11
Editorial
Frontiers Media
Fecha
2020
Resumen
[EN] Purpose: We examined the effects of moderate resistance exercise (RE) on serum
cortisol, testosterone, extracellular heat shock protein (HSP70), and interleukin (IL)-6
and IL-15 concentrations in untrained males in a hot environment.
Methods: Ten untrained young males (26 ± 3 years; 75.8 ± 6 kg; 177.4 ± 5.3 cm)
performed two series of full body RE [3 sets of 8 to 10 repetitions, 30–60 s recovery
between series with 70% of one maximal repetition (1-RM), with a rest period of 1
to 3 min between exercises] carried out in a random order in both heated (∼35◦C)
and thermoneutral (22◦C) conditions. Serum concentrations of testosterone, cortisol,
HSP70, and IL-6 and IL-15 were measured before, at the end, and 1 h after RE sessions.
Participants in both groups consumed 4 ml of water/kg body mass every 15 min.
Results: There were time-related changes in testosterone, HSP70, and IL-6
(P < 0.001), and cortisol and IL-15 (P < 0.05). Levels of cortisol, HSP70, and IL-
6 increased immediately for RE at 35◦C, and testosterone and IL-15 levels were
decreased. Changes in serum testosterone, HSP70, cortisol, and IL-15 and IL-6 levels
were reversed after 1 h. A significant time × condition interaction was observed for IL-15
and HSP70 (P < 0.001), cortisol and IL-6 (P < 0.05), but not for testosterone (P > 0.05).
Conclusion: RE in a heated environment may not be appropriate for achieving muscle
adaptations due to acute changes of hormonal and inflammatory markers
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