Effect of Exercise at Morning in Comparison with Evening on Response of Spexin and Leptin to Eight Weeks of Endurance Training in Obese Women

Subject Areas : Journal of Animal Biology

Mohammad Karimi ^{1 *} , Mozhgan Baghaei-Barzabadi ²

1 - Department of Physical Education and Sport Sciences, Qom University of Technology, Qom, Iran
2 - Department of Physical Education and Sport Sciences, Qom University of Technology, Qom, Iran

Received: 2023-05-07 Accepted : 2023-06-02 Published : 2023-11-22

Keywords: Endurance training, Obesity, Circadian Rhythm, appetite,

Abstract :

Disturbance in regulation of energy balance in obesity involves several mechanisms, many of which are still not well understood. Circadian rhythms are followed by hormonal fluctuations, especially hormones involved in appetite. The aim of this research was to study the effect of eight weeks of endurance training in the morning compared to the evening on the levels of spexin and leptin in obese women. In this semi-experimental study, 30 obese female volunteers with an average age of 35.3 ± 4.4 years and a body mass index of 31.7 ± 1.2 kg/m2 were randomly divided into three equal groups (n = 10) including; Control, morning training and evening training groups. The protocol of endurance training was carried out for eight weeks, three sessions per week and with an intensity of 60 to 75% of the maximum heart rate. 48 hours before and after the intervention of endurance training, blood sampling was done under conditions of 10 hours of overnight fasting. Spexin and leptin values were evaluated by ELISA method. Data were analyzed by using one-way analysis of variance test at a significance level of p<0.05. The results showed that exercise intervention in the morning and evening led to a significant decrease in leptin values (p=0.02) and a significant increase in spexin values (p=0.03). In comparison between morning and evening training, changes in leptin (p=0.01) and spexin (p=0.01) were higher in the evening session. Based on the findings of this study, it seems that endurance training with moderate intensity in a period of eight-week may have positive effects on the hormones of spexin and leptin in the matter of appetite. Evening training has better effects than morning training.

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