Melatonin and gonadotropin secretion after acute exercise in physically active males

Elias, Alan N.; Wilson, Archie F.; Pandian, M. R.; Rojas, Francisco J.; Kayaleh, Raouf A.; Stone, Scott; James, N.

doi:10.1007/bf00237782

Cited by 27 publications

(15 citation statements)

References 29 publications

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“…In view of the above links between melatonin, exercise, and the sympathetic nervous system, the acute responses of melatonin to exercise have been examined previously, but the findings of these studies are conflicting (Atkinson et al 2007). Previous researchers have reported an increase (Carr et al 1981;Ronkainen et al 1986;Skrinar et al 1989;Theron et al 1984), a decrease (Monteleone et al 1990), and no change (Elias et al 1993) in melatonin concentrations after exercise.…”

Section: Introductionmentioning

confidence: 90%

Diurnal variation in the salivary melatonin responses to exercise: relation to exercise-mediated tachycardia

et al. 2011

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Salivary melatonin concentration is an established marker of human circadian rhythmicity. It is thought that melatonin is relatively robust to the masking effects of exercise. Nevertheless, the extent and even the direction of exercise-related change is unclear, possibly due to between-study differences in the time of day exercise is completed. Therefore, we aimed to compare melatonin responses between morning and afternoon exercise, and explore the relationships between exercise-related changes in melatonin and heart rate. At 08:00 and 17:00 hours, seven male subjects (mean ± SD age, 27 ± 5 years) completed 30 min of cycling at 70% peak oxygen uptake followed by 30 min of rest. Light intensity was maintained at ~150 lx. Salivary melatonin (ELISA) and heart rate were measured at baseline, 15 min during exercise, immediately post-exercise and following 30 min recovery. Melatonin was ≈15 pg ml(-1) higher in the morning trials compared with the afternoon (P = 0.030). The exercise-related increase in melatonin was more pronounced (P = 0.024) in the morning (11.1 ± 8.7 pg ml(-1)) than in the afternoon (5.1 ± 5.7 pg ml(-1)). The slope of the heart rate-melatonin relationship was significantly (P = 0.020) steeper in the morning (0.12 pg ml(-1) beats(-1 )min(-1)) than in the afternoon (0.03 pg ml(-1) beats(-1 )min(-1)). In conclusion, we report for the first time that the masking effect of moderate-intensity exercise on melatonin is approximately twice as high in the morning than the afternoon. The much steeper relationship between heart rate and melatonin changes in the morning raises the possibility that time of day alters the relationships between exercise-mediated sympathetic nervous activity and melatonin secretion.

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Section: Introductionmentioning

confidence: 90%

Diurnal variation in the salivary melatonin responses to exercise: relation to exercise-mediated tachycardia

et al. 2011

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“…However, the report that physical activity did not cause any change in the melatonin levels of female athletes 14 is consistent with the melatonin levels we found both at rest and after exercise during the day. Similarly, in a study conducted on 7 male volunteers, no significant change was found in the melatonin levels measured in blood samples collected in four rounds: before exercise, 30 seconds after exercise, and 15 and 30 minutes after exercise 15 . This is a significant report lending support to the results we obtained with daytime exercise.…”

Section: Discussionmentioning

confidence: 83%

Effects of Diurnal and Nocturnal Strenuous Exercise on Serum Melatonin Levels

Kılıç

Demirhan

Patlar

et al. 2016

Rev Bras Med Esporte

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Introduction: There are reports of a possible relationship between melatonin, a hormone secreted by the pineal gland, and exercise. Objective: The present study aims to investigate how diurnal and nocturnal strenuous exercise affects melatonin levels. Methods: The study enrolled 10 healthy sedentary males who did not actively exercise. The subjects had a mean age of 22.20±0.24 years, a mean height of 174.60±2.33 cm, and a mean weight of 69.70±2.42 kg. Two blood samples were collected from the subjects, one at rest, at 10:00 am, and the other immediately after strenuous exercise. Likewise, blood samples were taken from the same group of subjects after 48 hours: at 24:00 hours at rest and immediately after strenuous exercise. Samples were analyzed using the ELISA method to determine the serum melatonin levels (pg/ml). Results: By comparing the values at rest and after exercise, it was found that serum melatonin values remained unchanged with exercise. Serum melatonin values at rest or post-exercise measured at night were higher when compared with those measured during the day (p<0.05). Conclusions: Higher levels of melatonin found in the study appear to result from the increased release of melatonin at night, and not from exercise. The results of this study indicate that strenuous exercise carried out day or night, did not significantly influence serum melatonin levels. Keywords

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“…Various studies report that melatonin levels decrease, increase or remain unaffected by physical activity [44][45][46][47][48][49][50]. This variability in melatonin response to exercise can be explained by time of day, light conditions, type, duration or intensity of exercise, and by melatonin sampling scheme.…”

Section: Melatoninmentioning

confidence: 99%

Juvenile idiopathic arthritis and physical activity: Possible inflammatory and immune modulation and tracks for interventions in young populations

Rochette¹,

Duché²,

Merlin³

2015

Autoimmunity Reviews

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Melatonin and gonadotropin secretion after acute exercise in physically active males

Cited by 27 publications

References 29 publications

Diurnal variation in the salivary melatonin responses to exercise: relation to exercise-mediated tachycardia

Diurnal variation in the salivary melatonin responses to exercise: relation to exercise-mediated tachycardia

Effects of Diurnal and Nocturnal Strenuous Exercise on Serum Melatonin Levels

Juvenile idiopathic arthritis and physical activity: Possible inflammatory and immune modulation and tracks for interventions in young populations

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