目的：本研究主要是探討進行柔力球體操類運動時的能量代謝與生理反應，包括對心跳率(heart rate, HR)、攝氧量(relative oxygen uptake, V O_2)及呼吸頻率(respiratory rate, RR)的影響。方法：招募12位五專學生(男性3位，女性9位，年齡：16.7±1.0歲，身高：165.3±8.0公分，體重：59.8±10.8公斤)，經過8週的柔力球體操類運動訓練後，先進行1次跑步機上漸增強度測試，取得每秒1.5、2.0及2.5公尺的攝氧量、心跳率與呼吸頻率，之後再依據預錄之柔力球體操套路進行約10分鐘的操作，評估柔力球體操的代謝與生理反應。結果：柔力球體操類運動的心跳率 (132.7±19.1下／分鐘)、攝氧量(15.8±3.0 ml/kg/min)與呼吸頻率(33.4±6.3次／分鐘)，顯著高於每秒1.5公尺走路時的生理數值，但低於每秒2.0及2.5公尺的數值(p＜.05)。討論：柔力球體操運動從生理反應上顯示其為有氧運動，雖然其需要高度的專注力及小肌肉的運用，但似乎不會反應在能量代謝上。結論：柔力球體操類運動強度大約是青少年最大心跳率的65%，高於走路但低於跑步，屬於有氧運動，未來可將其視為有氧體操的課程內容。

Purposes: The main purpose of the study is to explore how metabolic and physical responses change during Roli ball exercising. The factors we examined were heart rate, relative oxygen uptake, and respiratory rate. Method: Three male students and nine female students from junior college were recruited. Their average age is 16.7±1.0 years, average height is 165.3±8.0 cm, and average weight is 59.8±10.8 kg. After 8 weeks of Roli ball training, subjects were tested for VO2, HR and RR by gradual increase walking for 1.5M, 2.0M, 2.5M and after a 10-minute Roli ball exercising. Results: After Roli ball exercising, the HR (132.7±19.1 /min), VO2 (15.8±3.0 ml/kg/min) and RR(33.4±6.3 /min) of subjects significantly higher than 1.5M gradual increasing walking but lower than 2.0M and 2.5M gradual increasing walking (p＜.05). Discussion: Although Roli ball exercise needs highly focused concentration and fine motor skills, physical responses have more significant changes than metabolic responses. Conclusion: The exercise intensity of Roli ball is about 65% of adolescent heart rate, higher than walking but lower than running. Roli ball is more like an aerobic exercise, and it could be included in school aerobics lessons.