School of Population Health, The University of Western Australia, Crawley, Australia.
Cancer Causes Control. 2012 Jul;23(7):1091-7. doi: 10.1007/s10552-012-9978-x. Epub 2012 May 5.
Although there is convincing evidence that physical activity reduces colon cancer risk, research in this area has focused on aerobic activity. We conducted a case-control study to investigate whether resistance training was associated with the risk of colon and rectal cancers.
Data were collected on various colorectal cancer risk factors, including recreational physical activity performed during three age periods, from 870 cases and 996 controls in Western Australia in 2005-2007. Participants were classified as having never, possibly, or definitely performed resistance training in each age period and over the adult lifetime. The association between resistance training and colon and rectal cancer risk was analyzed using multinomial logistic regression.
Participants who definitely performed resistance training in their lifetime had a non-significant reduced risk of colon cancer compared with those who did no resistance training (adjusted odds ratio (AOR) = 0.70, 95 % confidence interval (CI) = 0.45-1.11). No association was found for rectal cancer risk (AOR = 1.16, 95 % CI = 0.71-1.87). Performing resistance training was associated with a lower risk of colon cancer in each age period, although none of the relationships were statistically significant.
This study provides some initial evidence, albeit inconclusive, that resistance training may be inversely associated with colon cancer risk.
虽然有确凿的证据表明，身体活动可降低结肠癌的风险，但该领域的研究主要集中在有氧运动上。我们进行了一项病例对照研究，以调查抗阻训练是否与结肠癌和直肠癌的风险有关。
2005-2007 年，在澳大利亚西部收集了 870 例病例和 996 例对照的各种结直肠癌危险因素数据，包括三个年龄段的休闲体力活动。参与者被分为从未、可能或肯定在每个年龄段和成年期进行过抗阻训练。使用多项逻辑回归分析抗阻训练与结肠癌和直肠癌风险之间的关系。
与从未进行过抗阻训练的人相比，一生中确实进行过抗阻训练的参与者患结肠癌的风险显著降低（调整后的优势比（AOR）=0.70，95%置信区间（CI）=0.45-1.11）。未发现直肠癌风险（AOR=1.16，95%CI=0.71-1.87）有相关性。尽管没有统计学意义，但在每个年龄段进行抗阻训练都与结肠癌风险降低有关。
本研究提供了一些初步证据（尽管尚无定论），表明抗阻训练可能与结肠癌风险呈负相关。
