Psychophysiological aspects of paced and unpaced performance as influenced by age.
D000328:Adult; D000367:Age Factors; D004526:Efficiency; D006801:Humans; D008297:Male; D008328:Man-Machine Systems; D008875:Middle Aged; D009043:Motor Activity; D005082:Physical Exertion; D013147:Spirometry; D013647:Task Performance and Analysis