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Titolo:
The body weight-walking distance product as related to lung function, anaerobic threshold and peak (V)over dot O-2 in COPD patients
Autore:
Chuang, ML; Lin, IF; Wasserman, K;
Indirizzi:
Chang Gung Mem Hosp, Div Pulm & Crit Care Med, Tao Yuan, Taiwan Chang GungMem Hosp Tao Yuan Taiwan m & Crit Care Med, Tao Yuan, Taiwan Natl Yang Ming Univ, Dept Social Med, Taipei 112, Taiwan Natl Yang Ming Univ Taipei Taiwan 112 ept Social Med, Taipei 112, Taiwan Univ Calif Los Angeles, Harbor Med Ctr, Dept Med, Div Resp & Crit Care Physiol & Med, Torrance, CA 90509 USA Univ Calif Los Angeles Torrance CA USA 90509 Med, Torrance, CA 90509 USA
Titolo Testata:
RESPIRATORY MEDICINE
fascicolo: 7, volume: 95, anno: 2001,
pagine: 618 - 626
SICI:
0954-6111(200107)95:7<618:TBWDPA>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
OBSTRUCTIVE PULMONARY-DISEASE; EXERCISE PERFORMANCE; OXYGEN DESATURATION; GAS-EXCHANGE; RESECTION; CAPACITY; DYSPNEA; REPRODUCIBILITY; BREATHLESSNESS; CONSUMPTION;
Keywords:
6-min walking test; cycle ergometer; Borg score; oxygen-cost diagram; AT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Chuang, ML 5 FuHsin St,KweiHsan, Tao Yuan 333, Taiwan 5 FuHsin St,KweiHsan Tao Yuan Taiwan 333 Tao Yuan 333, Taiwan
Citazione:
M.L. Chuang et al., "The body weight-walking distance product as related to lung function, anaerobic threshold and peak (V)over dot O-2 in COPD patients", RESP MED, 95(7), 2001, pp. 618-626

Abstract

The product of walking distance and body weight (D W) mimics the work of walking. We hypothesized the superiority of D-W to walking distance (D) alone in any correlation with lung function: anaerobic threshold(PLT) and maximal oxygen uptake (VO2max). We further hypothesized that the D W product fora 6-min walk test (6 MWT) would correlate with the AT and VO2max because all three are markers of exercise ability. Thirty-three male chronic obstructive pulmonary disease (COPD) patients with mean forced expiratory volume in 1sec (FEV1) of 1.2+0.41 (range 0.58-1.86 1) were enrolled. Six patients were excluded due to inabiIity to achieve a maximal test. Lung function and self-assessed every-day activities using a oxygen-cost diagram were evaluated before entry of the study. A maximal effort ramp-pattern cardiopulmonaryexercise test (CPET) and a 6 MWT were conducted in random order. Borg score, heart rate: and O-2 Saturation with pulse oximetry (SPO2) were measured during both exercise tests. VO2, AT and minute ventilation were also measured during the CPET. Correlations were sought between the distance covered in the 6 MWT, and the D W product with AT, VO2max and other variables. The average D and D-W were 456m and 27.5kgkm(-1), respectively. D W was superiorto D alone when correlated with the VO2max and AT determined from the CPET, while modestly correlated with the change Cd) in Borg score and DeltaS(P)O(2) in the 6MWT and self-assessed every-day activities. Distance x weight product was correlated with the PIT and VO2max. In addition, D W was bettercorrelated with diffusing capacity for carbon monoxide and vital capacity than D alone. We conclude that D W mimics the work of walking better than Dand is suggested as a parameter for evaluation of patients' fitness if gasexchange measurements are not available.

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Documento generato il 02/04/20 alle ore 13:05:32