Age is the main factor related to expiratory flow limitation during constant load exercise
Clinics
;
73: e439, 2018. tab, graf
Article
in English
| LILACS
| ID: biblio-974906
ABSTRACT
OBJECTIVE:
The objective of this study was to investigate the interaction among the determinants of expiratory flow limitation (EFL), peak oxygen uptake (VO2peak), dysanapsis ratio (DR) and age during cycling at different intensities in young and middle-aged men.METHODS:
Twenty-two (11 young and 11 middle-aged) men were assessed. Pulmonary function tests (DR), cardiopulmonary exercise tests (VO2peak) and two constant load tests (CLTs) at 75% (moderate intensity) and 125% (high intensity) of the gas exchange threshold were performed to assess EFL. EFL was classified using the percentage of EFL determined from both CLTs (mild 5%-30%, moderate 30%-50%, severe >50%).RESULTS:
Only the middle-aged group displayed EFL at both exercise intensities (p<0.05). However, the number of participants with EFL and the percentage of EFL were only associated with age during high-intensity exercise.CONCLUSIONS:
There was no interaction between the determinants. However, age was the only factor that was related to the presence of EFL during exercise in the age groups studied.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Oxygen Consumption
/
Exercise
/
Forced Expiratory Volume
/
Age Factors
/
Pulmonary Ventilation
/
Exercise Test
Type of study:
Observational study
/
Prevalence study
/
Risk factors
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
English
Journal:
Clinics
Journal subject:
Medicine
Year:
2018
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Federal de Sao Carlos/BR
/
Universidade Federal do Rio de Janeiro/BR
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