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ERIC Number: EJ1023573
Record Type: Journal
Publication Date: 2013
Pages: 8
Abstractor: As Provided
ISSN: ISSN-0270-1367
Prediction Equations of Energy Expenditure in Chinese Youth Based on Step Frequency during Walking and Running
Sun, Bo; Liu, Yu; Li, Jing Xian; Li, Haipeng; Chen, Peijie
Research Quarterly for Exercise and Sport, v84 suppl 2 pS64-S71 2013
Purpose: This study set out to examine the relationship between step frequency and velocity to develop a step frequency-based equation to predict Chinese youth's energy expenditure (EE) during walking and running. Method: A total of 173 boys and girls aged 11 to 18 years old participated in this study. The participants walked and ran on a treadmill at speeds of 3 km/hr, 4 km/hr, 5 km/hr, 6 km/hr, 7 km/hr, and 8 km/hr. EE was measured using indirect calorimetry of open circuit spirometry (Cosmed K4b[superscript ]2 metabolic analyzer). Using multiple regression analysis, the relationship between step frequency and velocity was first examined, and the prediction equation of EE based on step frequency, age, and gender was derived. Results: The hypothesized relationship between step frequency and velocity was confirmed and an accurate (R[superscript 2] = 0.78) EE prediction equation was derived: Net EE = -- 13.7744+1.8004 (step frequency) -- 5.5715 (age) -- 11.5244 (gender). Conclusion: A step frequency-, age-, and gender-based equation was derived to predict the EE of youth during walking and running. The equation can be used to develop a simple device to estimate EE during walking and running in this population.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: China
Grant or Contract Numbers: N/A