Preservation of cognitive performance with age during exertional heat stress under low and high air velocity

Download
  1. (PDF, 1 MB)
  2. Get@NRC: Preservation of cognitive performance with age during exertional heat stress under low and high air velocity (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1155/2015/619103
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleBioMed Research International
ISSN2314-6133
Volume2015
Article number619103
Physical description10 p.
Subjectadult; age; cardiovascular response; cognition; controlled study; exercise; heat stress; humidity; male; normal human; sweating; task performance; thermogenesis
AbstractOlder adults may be at greater risk for occupational injuries given their reduced capacity to dissipate heat, leading to greater thermal strain and potentially cognitive decrements. Purpose. To examine the effects of age and increased air velocity, during exercise in humid heat, on information processing and attention. Methods. Nine young (24 ± 1 years) and 9 older (59 ± 1 years) males cycled 4 × 15 min (separated by 15 min rest) at a fixed rate of heat production (400 W) in humid heat (35°C, 60% relative humidity) under 0.5 (low) and 3.0 (high) m · s-1 air velocity wearing coveralls. At rest, immediately following exercise (end exercise), and after the final recovery, participants performed an abbreviated paced auditory serial addition task (PASAT, 2 sec pace). Results. PASAT numbers of correct responses at end exercise were similar for young (low = 49 ± 3; high = 51 ± 3) and older (low = 46 ± 5; high = 47 ± 4) males and across air velocity conditions, and when scored relative to age norms. Psychological sweating, or an increased sweat rate with the administration of the PASAT, was observed in both age groups in the high condition. Conclusion. No significant decrements in attention and speeded information processing were observed, with age or altered air velocity, following intermittent exercise in humid heat.
Publication date
PublisherHindawi Publishing
LanguageEnglish
AffiliationAerospace; National Research Council Canada
Peer reviewedYes
NPARC number21275776
Export citationExport as RIS
Report a correctionReport a correction
Record identifiera0dafabb-7eac-4c85-9481-76992156fe67
Record created2015-07-14
Record modified2016-12-14
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)