The effects of physical training on the day and night long-term heart-rates of middle-aged men.
D000328:Adult; D000367:Age Factors; D001827:Body Height; D001835:Body Weight; D001919:Bradycardia; D002940:Circadian Rhythm; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D013997:Time Factors