In:
Journal of Applied Physiology, American Physiological Society, Vol. 91, No. 1 ( 2001-07-01), p. 451-458
Abstract:
Seeking to develop a simple ambulatory test of maximal aerobic power (V˙o 2 max ), we hypothesized that the ratio of inverse foot-ground contact time (1/ t c ) to heart rate (HR) during steady-speed running would accurately predictV˙o 2 max . Given the direct relationship between 1/ t c and mass-specific O 2 uptake during running, the ratio 1/ t c · HR should reflect mass-specific O 2 pulse and, in turn, aerobic power. We divided 36 volunteers into matched experimental and validation groups.V˙o 2 max was determined by a treadmill test to volitional fatigue. Ambulatory monitors on the shoe and chest recorded foot-ground contact time ( t c ) and steady-state HR, respectively, at a series of submaximal running speeds. In the experimental group, aerobic fitness index (1/ t c · HR) was nearly constant across running speed and correlated withV˙o 2 max ( r = 0.90). The regression equation derived from data from the experimental group predicted V˙o 2 max from the 1/ t c · HR values in the validation group within 8.3% and 4.7 ml O 2 · kg −1 · min −1 ( r = 0.84) of measured values. We conclude that simultaneous measurements of foot-ground constant times and heart rates during level running at a freely chosen constant speed can provide accurate estimates of maximal aerobic power.
Type of Medium:
Online Resource
ISSN:
8750-7587
,
1522-1601
DOI:
10.1152/jappl.2001.91.1.451
Language:
English
Publisher:
American Physiological Society
Publication Date:
2001
detail.hit.zdb_id:
1404365-8
SSG:
12
SSG:
31
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