Comparative Study On The Energy Consumption Characteristics Of Different Intensity Of Exercises With The Same Total Work

In this study, female college students who are overweight or mildly obese participated in different intensity of bicycle exercises that the total work is equal. The data of the gas metabolism are collected during the process of the exercise. Reasonable suggestions for dieters are proposed by analyzing the energy consumption, the features of substrate metabolism and the optimal intensity of exercise from the perspective of energy consumption and the efficiency of losing weight. Methods:14 overweight or mildly obese female college students took part in the maximal oxygen uptake of bicycle exercise test under the moderate intensity, submaximal intensity and maximum intensity exercises. We can take the total work of 20 min moderate intensity exercise test as the standard to calaulate the time of the submaximal intensity and maximum intensity exercises which lead to three movement plan.We use lung function test machine to monitor the gas metabolism during the motion process(during the process and 20 min after) in order to acquire the data. ResultsResults 1 The maximal oxygen uptake of overweight or obese female college student is lower than that of normal female college students, with the maximum fat metabolism strength ranging from 45% to 60%. 2 In the medium and above intensity exercises, with the increase of the intensity of exercise, the proportion of energy provided by the fats is decreasing while that provided by carbohydrate increasing; 3 In the medium and above intensity exercises that the total work is equal, the energy consumption of maximal intensity is more than that of medium and sub maxima intensity. 4 The energy consumption in 20 minutes after the exercise is directly proportional to the intensity of exercise. And from the data of exercise recovery period we can find that the energy consumption in maximal exercise is still in the higher functional status, thus we can draw the conclusion that in the exercise that the total work is equal, the energy consumption of maximal intensity is more than that of sub maximal intensity and medium intensity; 5 In the medium and above intensity exercises that the total work is equal, the total energy consumption of maximal intensity is more than the submaxima intensity, while that of submaximal intensity is more than medium intensity. 6 Under the condition that the total work is equal, the total time of moderate intensity exercise is more than that of maximal intensity and submaximal intensity exercises. The results show that the energy metabolism efficiency and the energy consumption efficiency of maximal intensity exercise is more than that of submaximal intensity and medium intensity exercises.Conclusions: In the average sub maximal intensity exercises that the total work is equal, the total energy consumption is more than that of moderate intensity and sub maximal intensity exercises, and the body state 20 minutes after the exercise is better than that of submaximal intensity and medium intensity exercises.Therefore, conclusions are drawn that the energy metabolism efficiency of maximal intensity exercise is higher relative to sub maximal intensity and medium intensity exercises. The maximal intensity exercise can consume more energy and stimulate the body much stronger with a longer time.Suggestions: From the perspective of energy consumption, high intensity exercise is helpful to lose weight with little time-consuming, more energy consumptions and lower sense of boring. The high intensity exercise can also control appetite. Suggestions can be provided that one can chose to short-time high intensity exercise in order to lose weight under the allowed condition.