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Titolo:
DYSPNEA RATINGS FOR PRESCRIPTION OF CROSS-MODAL EXERCISE IN PATIENTS WITH COPD
Autore:
HOROWITZ MB; MAHLER DA;
Indirizzi:
DARTMOUTH HITCHCOCK MED CTR,PULM & CRIT CARE MED SECT,1 MED CTR DR LEBANON NH 03756 DARTMOUTH HITCHCOCK MED CTR,PULM & CRIT CARE MED SECT LEBANON NH 03756
Titolo Testata:
Chest
fascicolo: 1, volume: 113, anno: 1998,
pagine: 60 - 64
SICI:
0012-3692(1998)113:1<60:DRFPOC>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERCEIVED EXERTION; INTENSITY;
Keywords:
COPD; CROSS-MODAL EXERCISE PRESCRIPTION; DYSPNEA TARGET; EXERCISE TRAINING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
M.B. Horowitz e D.A. Mahler, "DYSPNEA RATINGS FOR PRESCRIPTION OF CROSS-MODAL EXERCISE IN PATIENTS WITH COPD", Chest, 113(1), 1998, pp. 60-64

Abstract

Study objective: To investigate the ability of patients with COPD to reproduce an exercise intensity accurately on the treadmill using dyspnea ratings obtained during incremental exercise on the cycle ergometer (cross-modal exercise prescription). Design: Five visits over an 8-week period. Patients: Thirteen symptomatic patients with stable COPD. Age was 67+/-6 years (mean+/-SD). FEV1 was 1.15+/-0.22 L (45+/-7% predicted). Interventions: At each visit, patients performed spirometry and exercise. Visit 1 was a practice incremental exercise test on the cycle ergometer. At visit 2 (1 week later), patients estimated the intensity of dyspnea using the 0 to 10 category-ratio scale during an incremental exercise test on the cycle ergometer (cycle estimation trial). Visit 3, 5 weeks later, was a practice session on the treadmill. At visit 4, 1 week later, patients were instructed to produce specific intensities of dyspnea (ie, dyspnea targets) at 50% and at anaerobic threshold (AT) or 80% of peak oxygen consumption ((V) over dot o(2)) as calculated from results at visit 2 (treadmill production trial), Visit 5,1 week later, was the treadmill estimation trial. Measurements and results: Lung function was stable at all visits. Dyspnea ratings were 1.9+/-0.9 at 50% of (V) over dot o(2) and 5.6+/-1.5 at AT/80% of peak (V) over dot o(2) (17.5+/-3.3 ml/kg/min). The (V) over dot o(2) at the treadmill production trial (761+/-185 mL/min) was significantly higher than at the cycle estimation trial (612+/-159 mL/min) at the low dyspnea target (p<0.0002; upward bias, 26+/-16%). In contrast, there was nosignificant difference in (V) over dot o(2) values (929+/-176 mL/min vs 918+/-259 mL/min) at the high dyspnea target (p>0.5; 0+/-11% bias). Conclusions: Patients with COPD can use dyspnea ratings from an incremental cycle ergometry test to regulate exercise on the treadmill without systematic bias at an intensity of 80% of peak (V) over dot o(2), but exceed the desired (V) over dot o(2) when using the dyspnea ratingat an intensity of 50% of peak (V) over dot o(2).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 23:11:19