A Study of Walking Energy Expenditure in Elementary School Higher Grades Children in Different Walking Speed

• Main Authors: HSU WEN TUNG, 許文桐
• Other Authors: YANG CHUNG HSIANG
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/60115254512564975599

碩士 === 國立臺北教育大學 === 體育學系碩士班 === 97 === A Study of Walking Energy Expenditure in Elementary School Higher Grades Children in Different Walking Speed Abstract Purpose: The purpose of this study was to discuss the relation among actual steps, oxygen consumption and energy expenditure in different walking speed of elementary school higher grades children and to develop the equation of walking energy expenditure by using pedometer. Methods: 50 healthy boy students (ages: 11.22 years, height: 149.72 cm, weight: 43.74 kg, BMI: 19.34 kg/m², stride length: 73.78 cm, body fat percent: 14.69 %) ages 10~12 participated in three 10-minute-walking tests which were 4.0km/h, 4.8km/h and 5.6km/h in speed. VO2 was measured by Vmax 29 Series. The steps and energy expenditure were measure by Yamax Digi-Walker SW 701 pedometer. Results: The correlation coefficient was significant (p＜.05) between the steps and energy expenditure transformed by VO2 in all three walking speed. There was also a significant difference (p＜.05) in energy expenditure between pedometer and transformed by VO2 in 4.0km/h and 4.8km/h walking speed. There was no significant difference in 5.6km/h. Conclusion: The pedometer could measure the steps accurately in three walking speed and the energy expenditure would increase when speed, frequency and stride length increased. The walking energy expenditure measured by pedometer was overestimated in 4.0km/h and 4.8km/h walking speed.There was no difference in 5.6km/h. Three equations were developed and the most accurate one was in the speed of 5.6km/h. The equation was Y=2.650＋.846×weight＋.044×X (Y＝walking energy expenditure, X＝walking energy expenditure measure by pedometer). Key words: pedometer, walking speed, energy expenditure, elementary school higher grades children