NDLI: Influence of prolonged continuous exercise on hormone responses to subsequent exercise in humans

Content Provider	Springer Nature Link
Author	Viru, Atko M. Hackney, Anthony C. Välja, Erli Karelson, Kalle Janson, Tamara Viru, Mehis
Copyright Year	2001
Abstract	This study examined the possibility that fatigue may modify the hormone responses to exercise. A group of 12 endurance trained athletes ran for 2 h (blood lactate concentrations of approximately 2 mmol·l–1) in order to induce fatigue. The subjects exercised for 10 min at 70% maximal oxygen uptake before (1st test) and after (2nd test) the 2 h run to assess hormone responsiveness. A 1 min anaerobic power test was performed to assess muscle power. Cortisol, growth hormone, testosterone and insulin concentrations were determined before and after the 1st and 2nd tests. The 1st test resulted in increases in concentrations (P<0.05) of cortisol and growth hormone, a decrease in insulin concentration (P<0.01) and no change in testosterone concentration. The 2 h run caused decreases of insulin, increases of growth hormone concentration and variable responses in the concentrations of cortisol and testosterone. The 2nd test decreased insulin concentration further (P<0.05), but responses of the concentrations of testosterone, growth hormone and cortisol were variable. In 6 subjects (group A) cortisol displayed an increase [mean (SD)] from baseline concentrations [+304.0 (60.0) nmol·l–1], while in the other 6 subjects (group B) a decrease or no change was seen [+3.1 (5.3) nmol·l–1 ,between groups, P<0.05]. Growth hormone concentration was substantially higher in group A [+14.7 (4.8) ng·ml–1] than group B [+6.0 (2.9) ng·ml–1] following the 2nd test. In group A anaerobic muscle power was higher, while in group B it was lower, after the 2 h run than before the 2 h run (P<0.05). The findings suggest that fatigue from prolonged endurance activity may introduce a resetting in the pituitary-adrenocortical component of the endocrine system, expressed either by intensified or by suppressed endocrine functions.
Starting Page	578
Ending Page	585
Page Count	8
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	85
Issue Number	6
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-08-25
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Responses of growth hormone aggregates to different intermittent exercise intensities

Influence of exercise duration on post-exercise steroid hormone responses in trained males

Hormonal responses during a prolonged military field exercise with variable exercise intensity

Erratum to: No effect of menstrual cycle phase on glucose and glucoregulatory endocrine responses to prolonged exercise

Prior endurance exercise attenuates growth hormone response to subsequent resistance exercise

Gas exchange responses to continuous incremental cycle ergometry exercise in primary pulmonary hypertension in humans

Isolating the independent influence of body fat on thermoregulatory responses to exercise

Sodium replacement and fluid shifts during prolonged exercise in humans

Influence of glucose ingestion by humans during recovery from exercise on substrate utilisation during subsequent exercise in a warm environment

Influence of prolonged continuous exercise on hormone responses to subsequent exercise in humans

Similar Documents

Responses of growth hormone aggregates to different intermittent exercise intensities

Influence of exercise duration on post-exercise steroid hormone responses in trained males

Hormonal responses during a prolonged military field exercise with variable exercise intensity

Erratum to: No effect of menstrual cycle phase on glucose and glucoregulatory endocrine responses to prolonged exercise

Prior endurance exercise attenuates growth hormone response to subsequent resistance exercise

Gas exchange responses to continuous incremental cycle ergometry exercise in primary pulmonary hypertension in humans

Isolating the independent influence of body fat on thermoregulatory responses to exercise

Sodium replacement and fluid shifts during prolonged exercise in humans

Influence of glucose ingestion by humans during recovery from exercise on substrate utilisation during subsequent exercise in a warm environment

Influence of prolonged continuous exercise on hormone responses to subsequent exercise in humans