Melatonin is an Ergogenic Aid for Exhaustive Aerobic Exercise only during the Wakefulness Period

Autor(es)

Beck, W. R. ^{[1, 2]} ; Scariot, P. P. M. ^[1] ; Gobatto, C. A. ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Appl Sci, Lab Appl Sport Physiol, BR-13484350 Limeira, SP - Brazil

^[2] Univ Estadual Campinas, Phys Educ, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF SPORTS MEDICINE; v. 37, n. 1, p. 71-76, JAN 2016.
• Citações Web of Science: 4

Resumo

This study tested the ergogenic effects of acute administration of melatonin on exhaustive exercise (tlim) at the anaerobic threshold intensity (iAnT) during periods of lower (L) and higher (H) spontaneous physical activity in swimming rats. Additionally, we evaluated the time of day effect on aerobic exercise tolerance. The periods of L and H were determined gravimetrically. All animals were subjected to an incremental test to determine the iAnT. Melatonin was administered (10mg.kg(-1), intraperitoneal) and after 30min, the rats were subjected to tlim during the L (LM) or H (HM) period. Control groups were called LC and HC. The criterion of significance was 5%. Melatonin enhanced tlim by 169% during H (HC=72min; HM=194min; P<0.01; ES=1.23) and by 90% during L (LC=31min vs. LM=59min; P=0.39; ES=1.18), demonstrating a significant effect on tlim (F=10.35; P<0.01) and a strong effect size (ES). Additionally, tlim was higher during H (F=14.24; P<0.01). Melatonin is a reasonable ergogenic aid, particularly during the wakefulness period, and the exercise tolerance is dependent on the time of day for swimming rats. (AU)

• Processo FAPESP: 09/08535-5 - Padronização e validação de testes aeróbios e anaeróbios em condições de campo e laboratório, utilizando modelos livre, atado e semi-atado, em corredores fundistas e velocistas
• Beneficiário: Claudio Alexandre Gobatto
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 10/13377-7 - Efeito da luminosidade e do horário do exercício de natação até a exaustão na intensidade de lactato mínimo sobre respostas bioquímicas e hematológicas de ratos
• Beneficiário: Wladimir Rafael Beck
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 11/13226-1 - RESPOSTA ERGOGÊNICA DA MELATONINA NO NADIR E ACROFASE DA ATIVIDADE ESPONTÂNEA E SUAS CONSEQUÊNCIAS NA ATIVIDADE DA VIA IKK/NF-kB E DANO TECIDUAL MUSCULAR
• Beneficiário: Wladimir Rafael Beck
• Modalidade de apoio: Bolsas no Brasil - Doutorado