Effect of physical activity on articular knee joint structures in community-based adults
Effect of physical activity on articular knee joint structures in community-based adults
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DOI：
10.1002/art.22990
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发表时间：
2007-10-15
期刊：
影响因子：
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通讯作者：
Cicuttini, Flavia M.
中科院分区：
文献类型：
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作者：
Racunica, Tina L.;Teichtahl, Andrew J.;Cicuttini, Flavia M.
Objective.目前尚不清楚有益于心血管系统的体力活动是否对膝关节结构有害。我们在社区人群中研究了体力活动的强度、频率和持续时间与膝关节结构之间的关系。从一项现有的健康老龄化研究中招募了297名年龄在50-79岁之间、无膝关节损伤或疾病史的健康成年人。每例受试者均接受膝关节磁共振成像（MRI），以测量胫骨软骨体积、胫股软骨缺损和骨髓病变。通过问卷调查获得1990-1994年和2003- 2004年的体力活动和人体测量数据。胫骨软骨体积随着10年前报告的剧烈活动（导致出汗或呼吸困难的活动）的频率（P = 0.01）和持续时间（P = 0.001）以及MRI前7天内最近的剧烈活动（P = 0.05）而增加。近期负重剧烈活动随胫骨软骨体积增加而增加（P = 0.02），与软骨缺损呈负相关（P = 0.02）。有规律的步行可降低骨髓病变的风险（P = 0.04）。在没有膝关节损伤或疾病史的健康社区成年人中，剧烈的体力活动似乎对膝关节软骨有有益的影响。定期步行可以降低膝关节骨髓病变的风险。这项研究为身体活动对衰老相关疾病的有益影响提供了进一步的支持，并表明对心脏有益的运动对膝盖也有好处。
Objective. It is unclear whether physical activity that is beneficial for the cardiovascular system is detrimental to knee structures. We examined the association between intensity, frequency, and duration of physical activity and knee structures in a community-based population.Methods. A total of 297 healthy adults ages 50-79 years with no history of knee injury or disease were recruited from an existing study on healthy aging. Each subject underwent knee magnetic resonance imaging (MRI) to measure tibial cartilage volume, tibiofemoral cartilage defects, and bone marrow lesions. Physical activity and anthropometric data were obtained via questionnaire during 1990-1994 and 2003-2004.Results. Tibial cartilage volume increased with frequency (P = 0.01) and duration (P = 0.001) of vigorous activity (activity leading to diaphoresis or dyspnea) reported 10 years previously, as well as recent vigorous activity in the 7 days prior to MRI (P = 0.05). Recent weight-bearing vigorous activity increased with tibial cartilage volume (P = 0.02) and was inversely associated with cartilage defects (P = 0.02). A reduced risk of bone marrow lesions was associated with regular walking (P = 0.04).Conclusion. Vigorous physical activity appears to have a beneficial effect on knee articular cartilage in healthy, community-based adults with no history of knee injury or disease. Regular walking reduces the risk of bone marrow lesions in the knee. This study provides further support for a beneficial effect of physical activity for diseases associated with aging and suggests that exercise that is good for the heart is also good for the knees.