Article

This study determined the intensity of walking exercise prescribed
from 70% of peak speed achieved during the incremental shuttle walk test (ISWT)
in people with chronic obstructive pulmonary disease and whether a steady-state
response was achieved when exercising at this intensity. DESIGN: Each participant
performed lung function tests, an incremental cycle test, two ISWTs, and a 10-min
continuous walking exercise at 70% peak ISWT speed. Oxygen consumption (V O2) was
collected using a portable system (Cosmed K4b, Rome, Italy). The V O2 from the
10-min walking exercise was compared with V O2peak from the better ISWT as a
measure of walking exercise intensity. RESULTS: Thirty-four participants
completed the study. The mean intensity achieved during the 10-min walking
exercise was 76% (11%) V O2peak. Steady-state V O2 was achieved by minute 5 in
the 10-min walking exercise. CONCLUSIONS: Prescription of walking exercise at 70%
of the peak ISWT speed provided an intensity appropriate for achieving
physiologic training responses.

Langue : ANGLAIS