Karim Azali Alamdari; Y yavari; R Hosseinzadeh; A Rahbar Ghazi
Abstract
Aim: In this study the effects of a single training session of overweight men before and after a meal on serum acetylated ghrelin levels, daily energy intake and the exercise energy expenditure were compared.
Method: In this semi experimental study, 30 overweight men (Mean and SD age of 25.2±3.54 ...
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Aim: In this study the effects of a single training session of overweight men before and after a meal on serum acetylated ghrelin levels, daily energy intake and the exercise energy expenditure were compared.
Method: In this semi experimental study, 30 overweight men (Mean and SD age of 25.2±3.54 years, BMI 27.96±3.64 kg/m2, weight 83.2±5.8 kg) were randomized into three groups (n = 10) including before lunch training, post lunch training and control. Experimental groups performed eight weeks, three sessions/wk of aerobic training sessions, consisted of 25 to 40 min of treadmill running and/or cycling at maximal fat oxidation intensity, either an hour prior to or two hours after a meal. Exercise energy expenditure, daily caloric intake and fasting serum acylated ghrelin levels in response to a single exercise session were measured as data in both pre and post-test occasions.
Results: A single training session either pre or post lunch meal increases serum acylated ghrelin level (P≤ 0/001), exercise energy expenditure (P≤ 0/001) and daily caloric intake (P≤ 0/001); indicating a compensatory energy intake which lowers the expected exercise-induced weight loss.
However, pre meal exercise leads to more remarkable increases in exercise energy cost (P≤ 0/001) concomitant with an elevated fasting serum acylated ghrelin levels (P≤ 0/001).
Conclusion: If appetite suppression is the only goal for exercise, it seems that exercise training should be performed after meals, and if maximizing each session’s energy cost is the case, it is better to practice before meals.
E Akbarzadeh; H Mohebbi
Abstract
Aim: The body weight is controlled by the balance between energy intake and energy expenditure and also, the amount of exercise-induced weight loss, depends on the amount of the food intake. Milk has also been shown to be more satiating compared to carbohydrate drinks. Therefore the aim of this study ...
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Aim: The body weight is controlled by the balance between energy intake and energy expenditure and also, the amount of exercise-induced weight loss, depends on the amount of the food intake. Milk has also been shown to be more satiating compared to carbohydrate drinks. Therefore the aim of this study was to investigate the effect of milk consumption following exercise on appetite and energy intake in non-athlete females.
Method: Eight healthy non-athlete women (aged 23.25±2.19 years, BMI 21.71±2.42 Kg/m2) volunteered to participate in this study. The Subjects attended the laboratory on three separate randomized trials (there were 3 weeks between trials) during their follicular phase. After consuming a standardized breakfast at 08:00 a.m, 30 minutes continuous exercise was conducted on the cycle ergometer at 65% of the subject’s heart rate reserve. In one trial, the effect of exercise and in the other two trials, the effect of exercise and consuming 600ml of low-fat milk or orange juice (276 Kcal), were investigated on appetite and energy intake. The subject’s energy intake were calculated 60 minutes after exercise or drink ingestion. Also appetite sensations (hunger, fullness, satiety and desire to eat) were assessed using visual analogue scale.
Results: Absolute and relative energy intake were reduced significantly after consuming milk compared with two other trials (exercise,exercise+orange juice)(p<0.05). In addition, consuming milk after exercise in comparison with other trials, caused significant reduction in hunger and desire to eat and it also caused significant increase in fullness and satiety(p<0.05).
Conclusion: The results of this study showed that consuming milk could be useful for controlling the appetite after exercise. Moreover, it could be a part of the strategies for weight control programs.
