A Comparison of New Cardiovascular Endurance Test Using the 2-minute Marching Test Vs. 6-minute Walk Test in Healthy Volunteers: A Crossover Randomized Controlled Trial

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2024 Aug 28

PMID 39197029

Authors

Suchai Surapichpong

Sucheela Jisarojito

Chaiyanut Surapichpong

Affiliations

Soon will be listed here.

Abstract

Trial Design: This was a 2×2 randomized crossover control trial.

Objective: To compare the cardiovascular endurance of healthy volunteers using a 2-minute marching test (2MMT) and a 6-minute walk test (6MWT).

Methods: This study included 254 participants of both sexes, aged 20-50 years, with a height and body mass index (BMI) of ≥150 cm and ≤25 kg/m2, respectively. Participants were hospital staff who could perform activities independently and had normal annual chest radiographs and electrocardiograms. A group-randomized design was used to assign participants to Sequence 1 (AB) or 2 (BA). The tests were conducted over 2 consecutive days, with a 1-day washout period. On day 1, the participants randomly underwent either a 6MWT or 2MMT in a single-anonymized setup, and on day 2, the tests were performed in reverse order. We analyzed maximal oxygen consumption (VO2max) as the primary outcome and heart rate (HR), respiratory rate (RR), blood pressure (BP), oxygen saturation, dyspnea, and leg fatigue as secondary outcomes.

Results: Data were collected from 127 participants, categorized into two groups for different testing sequences. The first (AB) and second groups had 63 and 64 participants, respectively. The estimated VO2max was equivalent between both groups. The 2MMT and 6MWT estimated VO2max with a mean of 41.00 ± 3.95 mL/kg/min and 40.65 ± 3.98 mL/kg/min, respectively. The mean difference was -0.35 mL/kg/min (95% confidence interval: -1.09 to 0.38; p <0.001), and no treatment and carryover effect were observed. No significant changes were observed in HR, RR, and systolic BP (p = 0.295, p = 0.361 and p = 0.389, respectively). However, significant changes were found in the ratings of perceived exertion (p <0.001) and leg fatigue scale (p <0.001).

Conclusion: The 2MMT is practical, simple, and equivalent to the 6MWT in estimating VO2max.

Trial Registration: TCTR20220528004 https://www.thaiclinicaltrials.org.

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