‘Gold Standard’ Treadmill Test vs One-mile Walk Test

Research Paper Title

Validation of One-mile Walk Equations for the Estimation of Aerobic Fitness in British Military Personnel under the Age of 40 years.

Background

To provide an accurate estimate of peak oxygen uptake (VO2 peak) for British Royal Navy Personnel aged between 18 and 39, comparing a gold standard treadmill based maximal exercise test with a sub-maximal one-mile walk test.

Methods

Two hundred military personnel consented to perform a treadmill-based VO2 peak test and two one-mile walk tests round an athletics track. The estimated VO2 peak values from three different one-mile walk equations were compared to directly measured VO2 peak values from the treadmill-based test. One hundred participants formed a validation group from which a new equation was derived and the other 100 participants formed the cross-validation group.

Results

Existing equations underestimated the VO2 peak values of the fittest personnel and overestimated the VO2 peak of the least aerobically fit by between 2% and 18%. The new equation derived from the validation group has less bias, the highest correlation with the measured values (r = 0.83), and classified the most people correctly according to the Royal Navy’s Fitness Test standards, producing the fewest false positives and false negatives combined (9%).

Conclusion

The new equation will provide a more accurate estimate of VO2 peak for a British military population aged 18 to 39.

Reference

Lunt, H., Roiz De Sa, D., Roiz De Sa, J., & Allsopp, A. (2013) Validation of One-mile Walk Equations for the Estimation of Aerobic Fitness in British Military Personnel under the Age of 40 years. Military Medicine. 178(7), pp.753-759.

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