Comparison on Selected Physiological Variables between Two Models of Elliptical Cross Trainers

Abstract

LANGUAGE NOTE | Document text in English; abstract also in Chinese.
 Elliptical cross trainer has become popular for cardio respiratory fitness training. Since new models of elliptical trainers are manufactured for better design and more effective in workout, the present study attempted to compare the physiological variables of the latest model of elliptical trainer, Precor AMT 100i, with the previous model, Precor EFX 576i. A total of 30 female university students participated in the 12-minute incremental elliptical test. Heart rate data and energy expenditure were recorded. Results showed that the latest elliptical model required higher heart rate and energy output, comparatively. However, it appeared that overestimation in energy expenditure was found from the machine-shown data, as compared to the actual metabolic measurement. All data between 60%, 80% heart rate reserve and the equivalent perceived exertion of subjects was found to be no correlation.
 本文探討兩種橢圓運轉機對生理變數的影响。邀請了30位大學女生，在兩款橢圓運轉機(Precor EFX576i, Precor AMT 100i)上進行練習，收集心跳率、攝氧量、能量消耗及主觀感覺疲勞等數據。結果顯示: 新款型號的橢圓運轉機對身體的生理要求較大，而且兩種橢圓運轉機的預測數值，比實際量度的略大。