Key result
6-minute walk distance strongly correlates with peak METs during ETT in postoperative CABG patients.
Why the study?
Exercise capacity is a key outcome in cardiac rehabilitation typically assessed by exercise tolerance testing, but the 6-minute walk test represents an alternative functional walking test tool.
Does the 6-minute walk test correlate with the exercise tolerance test for assessing functional capacity in postoperative CABG patients?
Cross-Sectional (n=80)
Yes
Does the 6-minute walk test correlate with the exercise tolerance test for assessing functional capacity in postoperative CABG patients?
Effect estimate: r = 0.77
p-value: p=<0.0001
The 6-minute walk test is a valid and well-tolerated tool that strongly correlates with the exercise tolerance test for assessing functional capacity in post-CABG patients entering cardiac rehabilitation.
May support simpler 6MWT use for post-CABG functional assessment in rehab; leaves open prospective validation before replacing ETT.
Exercise capacity and quality of life are the main outcomes in cardiac rehabilitation (CR). Exercise capacity is one of the important prognostic and diagnostic measures acquired by the exercise tolerance test (ETT). The 6-min walk test (6MWT), as a functional walking test, is another tool for assessing exercise capacity. Eighty postoperative coronary artery bypass grafting (CABG) participants admitted to three CR units were recruited for this cross-sectional and multicenter study, based on convenient non-probability sampling. All participants performed an ETT and two repeated 6MWTs. Maximum heart rate (HR), maximum blood pressure (BP), maximal oxygen uptake (VO2max), and peak metabolic equivalents of tasks (MET) during the tests and also the 6-min walk distance (6MWD) were the outcome measures. The mean age of all participants was 62.13 (7.12) years and 80% were male. Pearson correlation showed that maximum HR (r(78) = 0.67, P < 0.001) and maximum systolic BP (r(78) = 0.57, P < 0.001) during the 6MWT correlated moderately with those achieved during ETT. Maximum HR in the 6MWT corresponded to 86% of that achieved during ETT. The 6MWD showed a strong positive correlation with peak MET estimated during ETT as a measure of exercise capacity (r = 0.77, P < 0.001). The results from this study suggest that the 6MWT is a valid tool for assessing functional capacity for prescribing exercise in a group of postoperative CABG participants admitted to CR units. This finding is helpful for healthcare professionals and for patients, as the test is easy to administer and also well tolerated by patients. PHT-9923.
No takes yet. Share an insight, caveat, or question.
Saba et al. (2021) conducted a cross-sectional in Postoperative coronary artery bypass grafting (CABG) (n=80). 6-minute walk test (6MWT) vs. Exercise tolerance test (ETT) was evaluated on Correlation between 6-minute walk distance and peak MET estimated during ETT (r = 0.77, p=<0.0001). The 6-minute walk distance showed a strong positive correlation with peak metabolic equivalents estimated during the exercise tolerance test (r = 0.77, P < 0.0001) in postoperative CABG patients.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: