Acute melatonin administration enhances aerobic tolerance: an analysis of biochemical and hematological parameters
Motriz (Online)
; 24(2): e1018169, 2018. tab, graf
Article
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| LILACS
| ID: biblio-895063
Biblioteca responsable:
BR33.1
ABSTRACT
Aims:
This study is aimed at testing the acute melatonin administration (oral; 6 mg) on aerobic tolerance at cycloergometer and analyzing the consequences on biochemical and hematological parameters.Methods:
The maximal aerobic capacity intensity (iMAC) at cycloergometer of eleven male healthy men (24.18±3.92 years-old; 87.07±12.48 kg; 1.82±0.05 m; 26.18±3.63 kg/m2; and 16.28±5.77 % of fat) was individually determined and used to perform a time to exhaustion (tlim) trial of 30 minutes after melatonin or placebo administration. We observed 48-72h interval between tests, performed in a double-blind experiment design. In order to determine hematological and biochemical parameters we collected venous blood samples before and after tlim. Statistical significance was set at 5%. Results The intensity and the lactatemia corresponding to the maximal aerobic capacity were 120.88±18.78 W and 3.32±1.03 mmol.L-1, respectively. The tlim with placebo (33.94±15.26 min, confidence interval = 24.92 - 42.95) was significantly lower than the tlim with melatonin (41.94±17.22 min; CI = 31.76 - 52.12; p = 0.03; 19.06%; effect size = 0.49). All of the 21 analyzed blood physiological variables resulted in no significant variation after tlim when placebo was compared to melatonin, except for total sera cholesterol (lower after exercise with melatonin).Conclusion:
Acute melatonin administration enhanced aerobic tolerance at iMAC in 19% at cycloergometer; however, the biochemical and hematological variables assessed were not significantly modulated.(AU)Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
LILACS
Asunto principal:
Consumo de Oxígeno
/
Ejercicio Físico
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5-Metoxitriptamina
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Capacidad Vital
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Melatonina
Tipo de estudio:
Clinical_trials
Límite:
Adult
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Humans
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Male
Idioma:
En
Revista:
Motriz (Online)
Asunto de la revista:
EducaÆo F¡sica e Treinamento
/
Medicina Esportiva
/
Medicina F¡sica e ReabilitaÆo
Año:
2018
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Brasil