Dyspnea during exercise and voluntary hyperpnea in women with obesity.
Respir Physiol Neurobiol
; 287: 103638, 2021 05.
Article
en En
| MEDLINE
| ID: mdl-33581294
ABSTRACT
Temporal responses of ratings of perceived breathlessness (RBP) during constant-load and incremental exercise, and during voluntary hyperpnea (EVH) were examined in women with obesity. Following 6â¯min of constant-load (60W) cycling, 34 women rated RPB≥4 (+DOE) and 22 women rated RPB≤2 (-DOE). Both groups completed an incremental cycling test and an EVH test at 40 and 60L/min; RPB was assessed each minute of incremental cycling and at the end of each EVH trial. RPB increased with ventilation during constant-load (+DOE R2=0.86; -DOE R2=0.82) and incremental (+DOE R2=0.91; -DOE R2=0.92) exercise, butâ¯+â¯DOE had a greater y-intercept than -DOE (60W -0.16±1.53 vs. -0.73±0.55; incremental -0.50±1.40 vs. -1.71±0.84). Despite matching ventilation, RPB was greater inâ¯+â¯DOE at baseline (0.97±1.14 vs. 0.14±0.28), 40L/min (2.50±1.43 vs. 0.98±0.91), and 60L/min (3.94±2.19 vs. 2.07±1.32) during EVH. These findings show that despite linear associations between RPB and ventilation during exercise and voluntary hyperpnea, breathlessness perception at a given ventilatory demand is heightened inâ¯+DOE compared with -DOE.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ejercicio Físico
/
Mecánica Respiratoria
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Disnea
/
Esfuerzo Físico
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Obesidad
Tipo de estudio:
Observational_studies
Límite:
Adult
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Female
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Humans
Idioma:
En
Revista:
Respir Physiol Neurobiol
Año:
2021
Tipo del documento:
Article
País de afiliación:
Canadá