title: Predicting maximal oxygen uptake of workers engaged in agricultural tasks.
mesh_terms: D000328:Adult; D000383:Agriculture; D005541:Forced Expiratory Volume; D006339:Heart Rate; D006801:Humans; D008297:Male; D008451:Maximal Voluntary Ventilation; D008875:Middle Aged; D010101:Oxygen Consumption; D005082:Physical Exertion