Respiration as a limiting factor for working capacity.
D000328:Adult; D004185:Disability Evaluation; D005541:Forced Expiratory Volume; D006801:Humans; D008168:Lung / Q000502:physiology; D008297:Male; D008448:Maximal Expiratory Flow Rate; D008875:Middle Aged; D005082:Physical Exertion; D010809:Physical Fitness; D012119:Respiration; D014797:Vital Capacity; D014938:Work Capacity Evaluation