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作者:岳志强 来源:生物谷 2012-2-1 19:06:49
2011年1月13日,据英国医学杂志网站发表的一项研究"Association of change in daily step count over five years with insulin sensitivity and adiposity: population based cohort study"表明:单纯的每天多走步不仅可以防止肥胖,并且可以降低患糖尿病的风险。
研究表明,在糖尿病的早期阶段,体育运动可以降低人体质量指数并且降低胰岛素的抗药性,这是第一个评估长期的走步锻炼给胰岛素敏感性带来的影响的研究
尽管最近一个研究表示(想达到效果),应该每天走3000步,一周五天,但是目前较为主流的标准是每天走10000步。
墨尔本的Murdoch儿童研究中心进行了一个由592人参与的研究,他们都曾参加过2000-2005年间澳大利亚对全国各地糖尿病患病率的一个调查。
在这个实验的最一开始,参与者们要完成一个关于糖尿病饮食和生活方式的问卷,并要经过一次十分彻底的身体检查。他们每人会收到一个计步器,并学会如何使用它。接下来的5年里,这些参与者将会被一直监测.
饮食、饮酒、吸烟等其它的一些生活方式中的元素也将被考虑进去。
五年中,每天走步更多的人被发现和更低的身体质量指数,更低的腰臀比,以及对胰岛素更敏感这些现象有联系。
作者们说:“这五年中,这些联系和饮食的能量摄入没有关系,和体型肥胖的改变有很大的很关系“
作者们预计,在他们这个实验中,那些平时经常不太走步的人,在这五年中改变他们的生活方式,变成每天走10000步,比那些把他们走步的步数增加至最近研究所建议的一周五天,每天走3000步的人,对胰岛素的敏感度高出3倍
他们总结说:“这些研究证实了一个独立的对人体质量指数,腰臀比,胰岛素敏感度有益的因素,既每天更多的走步,这也为中年人应该进行更多的体育锻炼提供了进一步的理论支持.
doi:10.1136/bmj.c7249
PMC:
PMID:
Association of change in daily step count over five years with insulin sensitivity and adiposity: population based cohort study
T Dwyer, director12, A-L Ponsonby, group leader12, O C Ukoumunne, senior research fellow1, A Pezic, research assistant1, A Venn, deputy director2, D Dunstan, research fellow3, E Barr, epidemiologist3, S Blair, professor4, J Cochrane, data manager2, P Zimmet, professor3, J Shaw, associate director3
Objectives To investigate the association between change in daily step count and both adiposity and insulin sensitivity and the extent to which the association between change in daily step count and insulin sensitivity may be mediated by adiposity.
Design Population based cohort study.
Setting Tasmania, Australia.
Participants 592 adults (men (n=267), mean age 51.4 (SD 12.2) years; women (n=325), mean age 50.3 (12.3) years) who participated in the Tasmanian component of the national AusDiab Study in 2000 and 2005.
Main outcome measures Body mass index, waist to hip ratio, and HOMA insulin sensitivity at follow-up in 2005.
Results Over the five year period, the daily step count decreased for 65% (n=382) of participants. Having a higher daily step count in 2005 than in 2000 was independently associated with lower body mass index (0.08 (95% confidence interval 0.04 to 0.12) lower per 1000 steps), lower waist to hip ratio (0.15 (0.07 to 0.23) lower), and greater insulin sensitivity (1.38 (0.14 to 2.63) HOMA units higher) in 2005. The mean increase in HOMA units fell to 0.34 (−0.79 to 1.47) after adjustment for body mass index in 2005.
Conclusions Among community dwelling, middle aged adults, a higher daily step count at five year follow-up than at baseline was associated with better insulin sensitivity. This effect seems to be largely mediated through lower adiposity. |
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