Physical Education
Vahid Kazemizadeh; Naser Behpour
Volume 28, Issue 4 , September and October 2021, , Pages 569-580
Abstract
Introduction: Sleep deprivation is one of those factors that affect the energy intake and appetite of individuals. It is reported that sleep deprivation affected by certain hormones (e.g. insulin, Leptin, ghrelin, and cholecystokinin, etc.) that are involved in energy balance may affect body weight through ...
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Introduction: Sleep deprivation is one of those factors that affect the energy intake and appetite of individuals. It is reported that sleep deprivation affected by certain hormones (e.g. insulin, Leptin, ghrelin, and cholecystokinin, etc.) that are involved in energy balance may affect body weight through appetite. The purpose of this study was to investigate the effect of 30-hours sleep deprivation on the response of leptin and ghrelin levels to an Exhaustive activity among active male students.Materials and Methods: Among the active male students of Razi University of Kermanshah, 20 undergraduate students were selected through convenience sampling and participated in the study. Subjects were evaluated by simple randomized cross-sectional design in two situations.Results: Information related to the comparison of post-test and pre-test in two experimental (sleep deprivation) and control (adequate sleep) situations showed that leptin hormone in sleep deprivation conditions decreased compared to rest conditions (9.4 %) And ghrelin hormone in experimental conditions increased compared to control conditions (2.04%) and this difference is considered significant at the level (p = 0.0012). Insomnia also caused significant changes in physiological parameters (VO2max, heart rate, blood pressure, time to exhaustion, etc.).Conclusion: 30 hours of sleep deprivation decreased leptin and at the same time increased ghrelin, which indicates the importance of night sleep, which is one of the influential factors associated with obesity and overweight.
Physical Education
Mojgan Zaminafshan; Amin Isanejad; Mahmoud Nikseresht; Fatemeh Izaddoust
Volume 27, Issue 2 , July and August 2020, , Pages 237-244
Abstract
Background Leptin is mainly produced in adipose tissue and plays an important role in regulating glucose metabolism. It seems that exercise training can improve glucose homeostasis and leptin level in human. Therefore, the purpose of this study was to determine the effect of aerobic interval, non-liner ...
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Background Leptin is mainly produced in adipose tissue and plays an important role in regulating glucose metabolism. It seems that exercise training can improve glucose homeostasis and leptin level in human. Therefore, the purpose of this study was to determine the effect of aerobic interval, non-liner resistance and concurrent training on the level of serum leptin and insulin resistance in overweight women. Materials and Methods In this semi-experimental study, 40 volunteers women were randomly assigned (n = 10 each) to non‐training control, aerobic interval training, non-liner resistance training, or concurrent training group. Subjects in Exercise group were on 12-week supervised exercise training program of four three per week, whereas the control group maintained a sedentary lifestyle. Insulin resistance and leptin were assessed from fasting blood samples before and after 12-week of intervention. All data were analyzed using Statistical software version 24 and the levels of statistical significance were set at P