Energy Expenditure Of Walking,Jogging And Cycling At Different Intensity In20-30People

Objective: This study by measuring energy expenditure of walking,jogging, cycling at different speeds, to discuss energy expenditure and itschang rules among people with different levels of BMI for taking part inthese physical activity, establish the energy equation of walking,joggingand cycling,so as to guide the scientific and reasonable exercise forpeople with different levels of BMI.It provided a theoretical basis for aconventional standard of energy expenditure according with our Chinesephysical condition. Methods: In this study, by indirect calorimetrymethod to determination of energy expenditure of164healthy adultsbetween20-30in the process of resting, walking (4.8km/h,5.6km/h,6.4km/h), jogging (7.2km/h,8.0km/h,8.8km/h) and cycling (10km/h,13km/h,15km/h,18km/h),and analysis energy expenditur of differentgender, body weight, as well as different intensity. Results:①There wasno significant difference that the energy expenditure of different genderpeople between20-30years old who was walking and cycling at speed of13km/h and15km/h (P>0.05). The men’s energy expenditure washigher than female in jogging and cycling at speed of10km/h,18km/h.②establishedenergyexpenditure equation of walking,jogging and cyclingby the correlation and regression analysis.Walking and Jogging: VO2（ml/min）=369.748speed+14.411weight-227.633gender-1562.027（R2=806）；Cycling: VO2（ml/min）=96.653speed+10.625FFM-85.735gender-708.550(R2=704).③Metabolic of walking at speedof4.8km/h to6.4km/h equivalent to3.92to5.51METs;Metabolic of jogging at speedof7.2km/h to8.8km/h equivalent to7.99to9.81METs;Metabolic ofcycling at speed of13km/h to18km/h equivalent to3.26to6.69METs.Conclusion: In this study, on the basis of the speed level, the energyexpenditure of jogging was the highest, followed the energy expenditureof cycling at the speed of18km/h.The energy expenditure of walking atthe speed of4.8km/h,5.6km/h equivalent to the energy expenditure ofcycling at the speed of13km/h,15km/h respectively. In addition to thepredicted values of cycling VO2equation, there was no significantdifference between the equation predicted values and measured values ofwalking, jogging.