EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Differences in the metabolic and hormonal response to exercise between racing cyclists and untrained individuals


, : Differences in the metabolic and hormonal response to exercise between racing cyclists and untrained individuals. Journal of Physiology 258(1): 1-18

1. Six well-trained cyclists and six untrained subjects were studied during and immediately after four successive 7 min periods of exercise at 30, 45, 60 and 75% of their maximal work capacity. 2. Venous blood samples were taken at rest, at the end of each exercise period and 5 min following the end of exercise, for estimation of metabolites in blood and plasma insulin, growth hormone, cortisol and catecholamines. 3. The results showed significant differences in the mobilization and utilization of muscle fuels between the athletically fit cyclists and the untrained group. In the cyclists, glucose, glycerol and free fatty acid concentrations were higher, but lactate, pyruvate and alanine were lower than in the untrained subjects during exercise. 4. Plasma catecholamines rose in both groups during exercise but the rise was significantly less in the racing cyclists. Plasma insulin was depressed to a greater extent in the untrained subjects during exercise and plasma glucagon rose to a greater extent during strenuous exercise and remained elevated after the end of exercise in the untrained group. Plasma human growth hormone rose to a greater extent during exercise and remained elevated after the end of exercise in the untrained group. Plasma cortisol fell at low and moderate exercise rates in both groups, but to a smaller extent in the cyclists. Cortisol values rose at higher workloads and were significantly higher in the cyclists at the end of exercise. 5. It is concluded that there are significant differences in the metabolic and hormonal responses to exercise between athletically trained and untrained individuals, even when the physically fit subjects work at the same percentage of their maximal capacity as the unfit subjects.

(PDF same-day service: $19.90)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 005151392

PMID: 940045

DOI: 10.1113/jphysiol.1976.sp011403

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Morrey B.F., 1991: The hip femoral head size. Morrey, B F (Ed ) Joint Replacement Arthroplasty Xxviii+1252p Churchill Livingstone: New York, New York, Usa; Edinburgh, Scotland, Uk Illus 587-600

Smulevitch A., 1981: Differentiated psycho pharmaco therapy in anxiety states of slowly progressive schizophrenia. Agressologie 22(D): 31-32

Santos, A. O.; Bergamaschi, H.; Rosa, L. M. G.; Bergonci, J. I., 2000: Calibrated heat-pulse method for the assessment of maize water uptake. Water uptake was verified with the heat-pulse system in maize cv. Pioneer grown under well-watered conditions in Eldorado do Sul, Rio Grande do Sul, Brazil, in 1995/96 and 1996/97. The temperature difference between two radially inserted thermocou...

Chiou, Y-You.; Hwang, J-I.; Chou, Y-Hong.; Wang, H-Kai.; Chiang, J-Huey.; Chang, C-Yen., 2005: Percutaneous ultrasound-guided radiofrequency ablation of intrahepatic cholangiocarcinoma. This study evaluated the clinical applications, treatment effects, and complications of percutaneous ultrasound (US)-guided radiofrequency ablation (RFA) of intrahepatic cholangiocarcinoma. Ten patients (6 men and 4 women) with histologically prov...

Raz A.; Meromsky L.; Zvibel I.; Lotan R., 1987: Transformation related changes in the expression of endogenous cell lectins. Endogenous lectins purified from UV-2237-IP3 murine fibrosarcoma cells by affinity chromatography consisted of two polypeptide species of Mr 14,500 (L-14.5) and Mr 34,000 (L-34). Antibodies against this material immunoprecipitated the lectins from...

Rajas, Fabienne; Duvernay, Stephane; Tarpin, Sandrine; Mithieux, Gilles, 1999: Characterization of the regulatory regions of the glucose-6 phosphatase gene promoter in HepG2 cells. Proceedings of the Nutrition Society 58(3): 74A, Aug

Davydov, I. V.; Zorbidi-Zh-Kh, 1978: Regularities in number dynamics of the coho salmon oncorhynchus kisutch population in the kamchatka river as a basis for prognoses of the volume of its return. Variation characteristics of coho salmon numbers in the Kamchatka River [Russian SFSR, USSR] were determined. Catches were analyzed from 1937-1974. Fish numbers in these salmon populations were affected by periodic 4-5 yr and 6-7 yr cycle variatio...

Harrison, Lm, 1998: Barley leaf stripe survey, 1996 (note year of survey). Canadian plant disease survey Inventaire des maladies des plantes au Canada 78(78): 73

Brinkmann, W., 1977: Lines of development in agricultural engineering. Vortrage 1) 39-54

Schellenberg, P.; Mebold, A., 1980: Juvenile fracture of the calcaneus. In individual cases where it is possible to reduce completely a severely dislocated fracture by simple means, it will not be necessary to follow the rule of conservative and functional treatment of calcaneal fractures.