本研究目的係探討不同訓練頻率的有氧運動介入對肥胖男性大學生血壓調控成效之影響。受試者為中華大學45名肥胖(身體質量指數≧27kg/m^2)男性大學生依隨機方式分為:高訓練頻率組15人(HFT組,5次/週)、低訓練頻率組15人(LFT組,3次/週)與控制組15人(CON組)。HFT組及LFT組受試者有氧運動介入進行為期12週、每次60分鐘的有氧運動,運動強度介於50%-70%最大心跳率(maximal heart rate, HRmax)。CON組則維持正常的日常生活作息。受試者分別於實驗前、後進行體位評估、血液生化分析與健康體適能檢測。結果顯示12週有氧運動介入,收縮壓改變量與HFT組(β=-7.24, p=0.026)及LFT組(β=-5.99, p=0.011)呈現顯著負相關;平均動脈壓與LFT組(β=--3.37, p=0.031)呈現顯著負相關。本研究證實有氧運動訓練可有效降低血壓,並進一步發現訓練頻率越高者對收縮壓調控越佳。
The purpose of this study was to determine the effects of different frequencies of aerobic exercise training on blood pressure in obese adults. Forty-five obese [body mass index (BMI),≧ 27 kg/m^2] male subjects, aged 19-30 years, were randomized into three equal groups (n = 15): high-frequency training (HFT), low-frequency training (LFT), and control group (CON). The different frequencies of aerobic exercise training were composed of 50-70% maximal heart rate (HRmax), 60 min/day, 3 days/week or 5 days/week. All subjects' anthropometric data, blood biochemical parameters, and health-related physical fitness components were measured at baseline and after 12 weeks. After 12-week aerobic exercise intervention, the changes in systolic blood pressure (SBP) differed among all three groups ( p < 0.05). In addition, LFT had significantly more changes in mean arterial pressure (MAP) than the CON. In conclusion, our results showed that a 12-week HFT intervention can considerably reduce SBP, whereas a LFT intervention can significantly reduce SBP and MAP.