-
Je něco špatně v tomto záznamu ?
The effects of head cooling on endurance and neuroendocrine responses to exercise in warm conditions
L. Ansley, G. Marvin, A. Sharma, M. J. Kendall, D. A. Jones, M. W. Bridge
Jazyk angličtina Země Česko
Free Medical Journals od 1998
ProQuest Central od 2005-01-01
Medline Complete (EBSCOhost) od 2006-01-01
Nursing & Allied Health Database (ProQuest) od 2005-01-01
Health & Medicine (ProQuest) od 2005-01-01
ROAD: Directory of Open Access Scholarly Resources od 1998
- Klíčová slova
- Prolactin, Hyperthermia, Head Cooling, Exercise, Central Fatigue,
- MeSH
- časové faktory MeSH
- dospělí MeSH
- financování organizované MeSH
- fyzická vytrvalost MeSH
- fyziologická adaptace MeSH
- hlava MeSH
- kosterní svaly metabolismus MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- nízká teplota MeSH
- percepce MeSH
- prolaktin krev MeSH
- spotřeba kyslíku MeSH
- svalová kontrakce MeSH
- svalová únava MeSH
- teplota kůže MeSH
- termoregulace MeSH
- vysoká teplota MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
The present study investigated the effects of head cooling during endurance cycling on performance and the serotonergic neuroendocrine response to exercise in the heat. Subjects exercised at 75 % VO2max to volitional fatigue on a cycle ergometer at an ambient temperature of 29±1.0 °C, with a relative humidity of approximately 50 %. Head cooling resulted in a 51 % (p<0.01) improvement in exercise time to fatigue and Borg Scale ratings of perceived exertion were significantly lower throughout the exercise period with cooling (p<0.01). There were no indications of peripheral mechanisms of fatigue either with, or without, head cooling, indicating the importance of central mechanisms. Exercise in the heat caused the release of prolactin in response to the rise in rectal temperature. Head cooling largely abolished the prolactin response while having no effect on rectal temperature. Tympanic temperature and sinus skin temperature were reduced by head cooling and remained low throughout the exercise. It is suggested that there is a coordinated response to exercise involving thermoregulation, neuroendocrine secretion and behavioural adaptations that may originate in the hypothalamus or associated areas of the brain. Our results are consistent with the effects of head cooling being mediated by both direct cooling of the brain and modified cerebral artery blood flow, but an action of peripheral thermoreceptors cannot be excluded.
Lit.: 47
- 000
- 00000naa 2200000 a 4500
- 001
- bmc10015742
- 003
- CZ-PrNML
- 005
- 20111210180557.0
- 008
- 100716s2008 xr e eng||
- 009
- AR
- 024 7_
- $a 10.33549/physiolres.931260 $2 doi
- 040 __
- $a ABA008 $b cze $c ABA008 $d ABA008 $e AACR2
- 041 0_
- $a eng
- 044 __
- $a xr
- 100 1_
- $a Ansley, L. $7 gn_A_00007218
- 245 14
- $a The effects of head cooling on endurance and neuroendocrine responses to exercise in warm conditions / $c L. Ansley, G. Marvin, A. Sharma, M. J. Kendall, D. A. Jones, M. W. Bridge
- 314 __
- $a School of Psychology and Sport Sciences, Northumbria University, Birmingham, United Kingdom
- 504 __
- $a Lit.: 47
- 520 9_
- $a The present study investigated the effects of head cooling during endurance cycling on performance and the serotonergic neuroendocrine response to exercise in the heat. Subjects exercised at 75 % VO2max to volitional fatigue on a cycle ergometer at an ambient temperature of 29±1.0 °C, with a relative humidity of approximately 50 %. Head cooling resulted in a 51 % (p<0.01) improvement in exercise time to fatigue and Borg Scale ratings of perceived exertion were significantly lower throughout the exercise period with cooling (p<0.01). There were no indications of peripheral mechanisms of fatigue either with, or without, head cooling, indicating the importance of central mechanisms. Exercise in the heat caused the release of prolactin in response to the rise in rectal temperature. Head cooling largely abolished the prolactin response while having no effect on rectal temperature. Tympanic temperature and sinus skin temperature were reduced by head cooling and remained low throughout the exercise. It is suggested that there is a coordinated response to exercise involving thermoregulation, neuroendocrine secretion and behavioural adaptations that may originate in the hypothalamus or associated areas of the brain. Our results are consistent with the effects of head cooling being mediated by both direct cooling of the brain and modified cerebral artery blood flow, but an action of peripheral thermoreceptors cannot be excluded.
- 650 _2
- $a financování organizované $7 D005381
- 650 _2
- $a fyziologická adaptace $7 D000222
- 650 _2
- $a mladiství $7 D000293
- 650 _2
- $a dospělí $7 D000328
- 650 _2
- $a termoregulace $7 D001833
- 650 _2
- $a nízká teplota $7 D003080
- 650 _2
- $a hlava $7 D006257
- 650 _2
- $a vysoká teplota $7 D006358
- 650 _2
- $a lidé $7 D006801
- 650 _2
- $a svalová kontrakce $7 D009119
- 650 _2
- $a svalová únava $7 D018763
- 650 _2
- $a kosterní svaly $x metabolismus $7 D018482
- 650 _2
- $a spotřeba kyslíku $7 D010101
- 650 _2
- $a percepce $7 D010465
- 650 _2
- $a fyzická vytrvalost $7 D010807
- 650 _2
- $a prolaktin $x krev $7 D011388
- 650 _2
- $a teplota kůže $7 D012881
- 650 _2
- $a časové faktory $7 D013997
- 650 _2
- $a mladý dospělý $7 D055815
- 650 _2
- $a mužské pohlaví $7 D008297
- 653 00
- $a Prolactin
- 653 00
- $a Hyperthermia
- 653 00
- $a Head Cooling
- 653 00
- $a Exercise
- 653 00
- $a Central Fatigue
- 700 1_
- $a Marvin, G.
- 700 1_
- $a Sharma, A.
- 700 1_
- $a Kendall, M.J.
- 700 1_
- $a Jones, D. A.
- 700 1_
- $a Bridge, M. V.
- 773 0_
- $w MED00003824 $t Physiological research $g Roč. 57, č. 6 (2008), s. 863-872 $x 0862-8408
- 856 41
- $u http://www.biomed.cas.cz/physiolres/pdf/57/57_863.pdf $y plný text volně přístupný
- 910 __
- $a ABA008 $b A 4120 $c 266 $y 8
- 990 __
- $a 20100708110758 $b ABA008
- 991 __
- $a 20100806090402 $b ABA008
- 999 __
- $a ok $b bmc $g 756157 $s 619940
- BAS __
- $a 3
- BMC __
- $a 2008 $b 57 $c 6 $m Physiological research $x MED00003824 $d 863-872
- LZP __
- $a 2010-32/vtme