Pescatello L S, Murphy D
New Britain General Hospital, CT 06050, USA.
Med Sci Sports Exerc. 1998 Sep;30(9):1408-13. doi: 10.1097/00005768-199809000-00009.
The influence of daily accumulated physical activity on blood glucose among older adults with varying obesity patterns is unknown. The purpose of this investigation was to determine if the blood glucose lowering effect of daily movement is modulated by distribution of adiposity in a community-based sample of older persons.
The study sample (N = 743) was mostly women (79.4%) with an average age of 74.5+/-0.3 yr. A question from the Yale Physical Activity Survey was the indicator of lower intensity physical activity. The response, answered in h x d(-1) spent in motion, was divided into tertiles (<3, 3 to <5, and > or = 5 h x d(-1)). Random blood glucose and total blood cholesterol were assessed via finger stick. The body mass index (BMI) and waist circumference (WC) delineated the categories of adiposity patterning as follows: nonobese (N = 354), BMI = 23.8+/-0.1 kg x m(-2) and WC = 80.3+/-0.4 cm; noncentral obese (N = 79), BMI = 30.8+/-0.1 kg x m(-2) and WC = 87.5+/-0.4 cm; and central obese (N = 310), BMI = 32.7+/-0.3 kg x m(-2) and WC = 103.3+/-0.5 cm.
After adjusting for age, gender, race, medication use, and postprandial state, blood glucose levels were lower with greater amounts of reported daily movement in the centrally obese, 8.6+/-0.4 mmol x L(-1), 6.6+/-0.4 mmol x L(-1), and 6.3+/-0.4 mmol x L(-1) for <3 h x d(-1), 3 to <5 h x d(-1), and > or = 5 h x d(-1), respectively (P < 0.001). As the centrally obese increased their hours of moving about, their WC was observed to be less, 105.7+/-0.8 cm, 103.4+/-0.8 cm, and 102.9+/-1.0 cm, respectively, independent of age, gender, race, and medication use (P < 0.05). Neither blood glucose nor WC differed between categories of daily movement in the noncentral obese or nonobese.
Our findings suggest that daily accumulated, lower intensity physical activity is advantageous for abdominal fat distribution and blood glucose among viscerally obese older adults.
不同肥胖模式的老年人每日累积身体活动对血糖的影响尚不清楚。本研究的目的是确定在一个基于社区的老年人群样本中，日常活动的降血糖作用是否受肥胖分布的调节。
研究样本（N = 743）大多为女性（79.4%），平均年龄74.5±0.3岁。耶鲁体力活动调查问卷中的一个问题是低强度体力活动的指标。回答以每天运动的小时数（h×d⁻¹）表示，并分为三分位数（<3、3至<5、≥5 h×d⁻¹）。通过指尖采血评估随机血糖和总血胆固醇。体重指数（BMI）和腰围（WC）按如下方式划分肥胖模式类别：非肥胖（N = 354），BMI = 23.8±0.1 kg×m⁻²，WC = 80.3±0.4 cm；非中心性肥胖（N = 79），BMI = 30.8±0.1 kg×m⁻²，WC = 87.5±0.4 cm；中心性肥胖（N = 310），BMI = 32.7±0.3 kg×m⁻²，WC = 103.3±0.5 cm。
在调整年龄、性别、种族、药物使用和餐后状态后，中心性肥胖者中，报告的每日运动量越大，血糖水平越低，<3 h×d⁻¹、3至<5 h×d⁻¹、≥5 h×d⁻¹组的血糖水平分别为8.6±0.4 mmol×L⁻¹、6.6±0.4 mmol×L⁻¹和6.3±0.4 mmol×L⁻¹（P < 0.001）。随着中心性肥胖者活动时间增加，观察到其腰围减小，分别为105.7±0.8 cm、103.4±0.8 cm和102.9±1.0 cm，与年龄、性别、种族和药物使用无关（P < 0.05）。非中心性肥胖或非肥胖者在不同日常活动量类别之间的血糖和腰围均无差异。
我们的研究结果表明，每日累积的低强度体力活动对内脏性肥胖老年人的腹部脂肪分布和血糖有益。
