Hansen Anders, Nim Casper Glissmann, O'Sullivan Kieran, O'Neill Søren
Spine Centre of Southern Denmark, University Hospital of Southern Denmark, Middelfart, Denmark.
Department of Regional Health Research, University of Southern Denmark, Odense, Denmark.
Disabil Rehabil. 2024 Mar;46(6):1173-1177. doi: 10.1080/09638288.2023.2194683. Epub 2023 Apr 7.
The six-minute walk test (6MWT) can assess walking function but is time-consuming. We investigate the correlation of performance over the first two minutes of the 6MWT (2MWT#) and the 6MWT. We also evaluate the 2MWT#'s ability to predict 6MWT results, assess correlations to secondary explanatory outcomes, and assess the ability to discriminate between clinical subgroups.
A cross-sectional study of 124 participants with LBP. Correlations between the 2MWT# and 6MWT and secondary outcomes were evaluated using the Pearson product-moment correlation coefficient. The predictive ability of the 2MWT# was defined as the residual distance between the observed 6MWT and three times the 2MWT#. Differences between clinical subgroups were evaluated using the Wilcoxon rank test.
The 2MWT# and 6MWT correlated highly ( = 83, 95% CI 0.76 - 0.87). The 2MWT# overestimated 6MWT results with 46.8 meters (SD 67.0). Both tests correlated with secondary outcomes and discriminated similarly between clinical subgroups.
The 2MWT# correlates highly with 6MWT but overestimates the observed 6MWT by 9%. Because it is shorter, possibly less burdensome, and with little or no loss of discriminatory ability, we consider it a legitimate alternative to the 6MWT in patients with LBP.Implications for rehabilitationWalking function is often affected in patients with low back pain (LBP).The six-minute walk test (6MWT) is frequently used to assess walking function but is time-consuming.A shorter two-minute walk test is a legitimate alternative in patients with LBP as it correlates highly with the 6MWT and has little or no loss of discriminatory ability between clinical subgroups.
六分钟步行试验（6MWT）可评估步行功能，但耗时较长。我们研究了6MWT前两分钟的表现（2MWT#）与6MWT之间的相关性。我们还评估了2MWT#预测6MWT结果的能力，评估其与次要解释性结果的相关性，并评估其区分临床亚组的能力。
对124名腰痛患者进行横断面研究。使用Pearson积差相关系数评估2MWT#与6MWT及次要结果之间的相关性。2MWT#的预测能力定义为观察到的6MWT与三倍2MWT#之间的剩余距离。使用Wilcoxon秩和检验评估临床亚组之间的差异。
2MWT#与6MWT高度相关（r = 0.83，95%CI 0.76 - 0.87）。2MWT#高估了6MWT结果46.8米（标准差67.0）。两项测试均与次要结果相关，且在区分临床亚组方面表现相似。
2MWT#与6MWT高度相关，但高估了观察到的6MWT结果9%。由于其时间较短，可能负担较小，且区分能力几乎没有损失，我们认为它是腰痛患者6MWT的合理替代方法。康复意义腰痛患者的步行功能常受影响。六分钟步行试验（6MWT）常用于评估步行功能，但耗时较长。较短的两分钟步行试验是腰痛患者的合理替代方法，因为它与6MWT高度相关，且在临床亚组之间的区分能力几乎没有损失。
