Exploring the exercise intensity equivalent to the anaerobic threshold in patients with acute myocardial infarction based on the 6-minute walk test distance.
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Abstract
Objective: This study aimed to evaluate the correlation between aerobic exercise intensity based on the 6 min walk test (6MWT) and the anaerobic threshold (AT)-based equivalent in patients with acute myocardial infarction (AMI). The feasibility of using the 6MWT for exercise prescription in primary care settings was also investigated.
Methods: A retrospective analysis was conducted on data from AMI patients, including statistics on all values of the cardiopulmonary exercise test and 6MWT parameters.
Results: Regression analysis showed that the regression equation based on 6MWD exercise intensity (EI6MWD) could predict AT-based exercise intensity (EIAT). Moreover, EI6MWD correlated with EIAT in 91.9%-93.0% of patients' EI6MWD, with AMI equivalent to the EIAT model.
Conclusions: The findings suggest that the anaerobic threshold in AMI patients corresponds to 91.9%-93.0% of the distance covered during the 6MWT. Thus, the 6MWT is a feasible tool for developing exercise prescriptions in primary care hospitals.
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