OBJECTIVE: 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(2), Rome, Italy). The V(O2) from the 10-min walking exercise was compared with V(O2)peak 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(O2)peak. 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.
OBJECTIVE: 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(2), Rome, Italy). The V(O2) from the 10-min walking exercise was compared with V(O2)peak 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(O2)peak. 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.
Authors: Fanuel Meckson Bickton; Talumba Mankhokwe; Rebecca Nightingale; Cashon Fombe; Martha Mitengo; Langsfield Mwahimba; Wilfred Lipita; Laura Wilde; Ilaria Pina; Zainab K Yusuf; Zahira Ahmed; Martin Kamponda; Felix Limbani; Harriet Shannon; Enock Chisati; Andy Barton; Robert C Free; Michael Steiner; Jesse A Matheson; Adrian Manise; Sally J Singh; Jamie Rylance; Mark Orme Journal: BMJ Open Date: 2022-01-31 Impact factor: 2.692