Reference values for a multiple repetition 6-minute walk test in healthy adults older than 20 years.
Reference values for a multiple repetition 6-minute walk test in healthy adults older than 20 years.
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DOI：
10.1097/00008483-200103000-00005
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发表时间：
2001-03-01
期刊：
影响因子：
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通讯作者：
Levy, R D
中科院分区：
文献类型：
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作者：
Gibbons, W J;Fruchter, N;Levy, R D
目的：(1)在不同年龄段的健康志愿者中确定最大6分钟步行距离(BEST 6MWD)，以建立重复6MWD的参考值；(2)研究人口学、人体测量学和习惯性运动对BEST 6MWD的影响。方法：在同一天，41名男性和38名女性健康志愿者在20米的走廊内进行6MWD。结果：86%的受试者在第一次步行后6MWD达到最好，从第一次步行到最好6MWD平均增加43m(P<；0.003)。最佳6MWD平均为698+/-96米，与年龄呈负相关(P<；0.001)，与身高呈正相关(P<；0.001)，男性大于女性(P<；0.0002)。回归模型解释了BEST 6MWD的受试者间变异性的41%(P<；0.00000001)。在一组老年受试者中，当使用另一项不提供测试熟悉度的研究的参考值时，预测的6MWD显著低估了测量的最佳6MWD，但当使用目前的参考值和第三项提供测试熟悉度的研究时，这种差异消失了。结论：本研究首次提供了重复多次的预测6MWD值，适用于20-40岁的受试者。选择合适的6MWD预测值来解释表现应该根据受试者的年龄和所提供的测试熟悉程度来指导。
PURPOSE: To (1) identify greatest 6-minute walk distance (6MWD) from among several repetitions (best 6MWD) in a wide age range of healthy volunteers to develop reference values for the multiple repetition 6MWD, and (2) investigate the influence of demographics, anthropometrics, and habitual exercise activity on best 6MWD.METHODS: Four 6MWD were performed on the same day in a 20-meter corridor by 41 male and 38 female healthy volunteers ranging in age from 20 to 80 years. The greatest 6MWD by each subject from among four 6MWDs was the primary outcome measure.RESULTS: Eighty-six percent had their best 6MWD after the first walk; an average increase of 43 meters was observed from first to best 6MWD (P < 0.003). Best 6MWD averaged 698 +/- 96 meters and was inversely related to age (P < 0.001), directly to height (P < 0.001), and was greater in men than women (P < 0.0002). A regression model accounted for 41% of between-subject variability in best 6MWD (P < 0.00000001). In a subset of older subjects, predicted 6MWD significantly underestimated measured best 6MWD when reference values were used from another study where test familiarization was not provided, but this difference disappeared when value were used from the present and a third study where test familiarization was provided.CONCLUSIONS: The present study is the first to provide predicted 6MWD values performed with multiple repetitions and for subjects in the 20-40-year-old age range. Selection of appropriate predicted 6MWD values for interpretation of performance should be guided by subject age and degree of test familiarization provided.