Influence of Exercise Intensity on Abdominal Fat and Adiponectin in Elderly Adults
Influence of Exercise Intensity on Abdominal Fat and Adiponectin in Elderly Adults
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DOI：
10.1089/met.2008.0060
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发表时间：
2009-08-01
影响因子：
2.1
通讯作者：
Evans, William J.
中科院分区：
文献类型：
--
作者：
Coker, Robert H.;Williams, Rick H.;Evans, William J.
为了检验中等强度（VO 2 peak的50%）运动训练（MI）与高强度（VO 2 peak的75%）运动训练（HI）对局部脂肪分布和血浆脂联素的影响，我们将18名超重（体重指数[BMI] = 30 +/- 1 kg/m2）老年人（71 +/- 1岁）随机分为HI组、MI组或对照组（CON）。入组HI或MI的受试者完成了12周的运动训练方案，旨在消耗1000 kcal/周。在运动训练之前和之后，使用双能X射线吸收法和计算机断层扫描完成身体成分测试。采用酶联免疫法（ELISA）测定血浆脂联素水平。HI和MI组的VO 2峰值有所改善，而CON组的VO 2峰值无变化。MI、HI或CON组的体重、BMI和%脂肪无显著变化。尽管HI组的内脏脂肪显著减少（-39 cm（2）），但MI或CON组无变化。此外，HI组的大腿肌肉衰减显著增加。MI和CON组的大腿肌肉衰减没有变化。此外，MI、HI或CON组的血浆脂联素水平没有变化。总之，我们直接比较运动强度而不减轻体重促进了HI在减少内脏脂肪方面的功效，即使脂联素没有变化。
To examine the influence of moderate-intensity (50% of VO2peak) exercise training (MI) versus high-intensity (75% of VO2peak) exercise training ( HI) on regional fat distribution and plasma adiponectin, we randomized 18 overweight (body mass index [BMI] = 30 +/- 1 kg/m(2)) elderly (71 +/- 1 years) to HI, MI, or a control group (CON). Subjects enrolled in HI or MI completed a 12-week exercise training protocol designed to expend 1000 kcal/week. Body composition testing was completed prior to and following the exercise training using dual energy X-ray absorptiometry and a computed tomography scan. Plasma adiponectin was measured using enzyme-linked immunoassay (ELISA). VO2peak improved in HI and MI, whereas there was no change in VO2peak in CON. No significant change in body weight, BMI, and % fat occurred in MI, HI, or CON. Although there was a significant reduction in visceral fat with HI (-39 cm(2)), there was no change in the MI or CON groups. In addition, there was a significant increase in thigh muscle attenuation in the HI group. There were no changes in thigh muscle attenuation in the MI and CON groups. Also, there was no change in plasma adiponectin in the MI, HI, or CON groups. In summary, our direct comparison of exercise intensity without weight loss promotes the efficacy of HI in the reduction in visceral fat, even without changes in adiponectin.