Dyspnea and Leg Effort during Incremental Cycle Ergometry
| Autor: | Kieran J. Killian, E. Summers, E. J. M. Campbell, Norman L. Jones |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Adult
Male Pulmonary and Respiratory Medicine medicine.medical_specialty Physical exercise Incremental exercise Sex Factors Sex factors Internal medicine medicine Humans Power output Exercise Aged Leg business.industry Muscles Age Factors Middle Aged Interval Scale Body Height Dyspnea Height increased Exercise Test Breathing Cardiology Physical therapy Female Perception business Cycle ergometry Muscle Contraction |
| Zdroj: | American Review of Respiratory Disease. 145:1339-1345 |
| ISSN: | 0003-0805 |
| Popis: | The aim of this study was to establish the perceived magnitude of dyspnea (discomfort associated with breathing) and leg effort experienced by normal subjects during a standardized incremental exercise test to maximal capacity; 460 normal subjects (297 male and 163 female 20 to 70 yr of age) were studied. The perceptual magnitude of both symptoms was rated using simple descriptive phrases (slight, moderate, maximal) tagged to numbers from zero to 10 on the Borg scale, which is an interval scale with ratio properties. Leg effort and dyspnea increased with power output, were higher in women than in men (p less than 0.0001), increased with advancing age (p less than 0.0001), and declined as height increased (p less than 0.0001). Leg effort = 4.82 + 0.007 kpm/min + 1.05 sex + 0.04 age - 0.055 Ht (r = 0.78; SD, 1.80). Dyspnea = 4.96 + 0.006 kpm/min + 0.96 sex + 0.04 age - 0.05 Ht (r = 0.74; SD, 1.80) (m = 1; f = 2). With power output expressed as a percentage of maximal power output (%MPO) both symptoms increased in an alinear manner. Effort = 0.0014 * %MPO1.86 (r = 0.86; SD, 1.50). Dyspnea = 0.0016 * %MPO1.79 (r = 0.81; SD, 1.57). Sex, age, or stature did not contribute to the rating of effort or dyspnea when power output was normalized in this way. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|