Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-25T01:06:34.705Z Has data issue: false hasContentIssue false
  • English
  • Français

Detraining of exercise-trained rats: effects on energetic efficiency and brown adipose tissue thermogenesis

Published online by Cambridge University Press:  09 March 2007

Jeff Arnold  and
Denis Richard
Jeff Arnold
Affiliation:
Département de Physiologie, Faculté de Médecine, Université Laval, Qu´bec GIK 7P4, Canada
Denis Richard
Affiliation:
Département de Physiologie, Faculté de Médecine, Université Laval, Qu´bec GIK 7P4, Canada
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

1. Complete energy balance measurements were made in exercise-trained (treadmill running) rats subjected to 27 d of exercise detraining.

2. The 20% difference in body-weight that existed at the end of the training period between sedentary and trained rats was negated by detraining. Detrained rats had twice the body-weight gain of their untrained controls.

3. An elevation (12%) in metabolizable energy (ME) intake (relative to body-weight) was observed in detrained rats while their gross energetic efficiency was augmented by 60%.

4. Energy expenditure, excluding the estimated costs of fat and protein storage, was similar for detrained and untrained rats. Complementing the latter was the finding that thermogenesis in brown adipose tissue, a known energy buffering process, was also similar.

5. Elevated ME intake (relative to body-weight) largely contributed to the increased energetic efficiency of detrained rats.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 57 , Issue 3 , May 1987 , pp. 363 - 370
Copyright
Copyright © The Nutrition Society 1987

References

REFERENCES

Arnold, J. D., LeBlanc, J., Côté, J., Lalonde, J. & Richard, D. (1986). Canadian Journal of Physiology and Pharmacology 64, 922–926.CrossRefGoogle Scholar
Arnold, J. D. & Richard, D. (1987). American Journal of Physiology (In the Press).Google Scholar
Booth, M. A., Booth, M. J. & Taylor, A. W. (1974). Federation Proceedings 33, 1959–1963.Google Scholar
Cannon, B. & Lindberg, O. (1979). Methods in Enzymology 55, 65–78.CrossRefGoogle Scholar
Crews, E. L., Fuge, K. W., Oscai, L. B., Holloszy, J. O. & Shank, R. E. (1969). American Journal of Physiology 216, 359–363.CrossRefGoogle Scholar
Davidson, S., Passmore, R., Brock, J. F. & Truswell, A. S. (1975). Human Nutrition and Dietetics. 6th ed. Edinburgh: Churchill Livingstone.Google Scholar
Dohm, G. L., Barakat, H. A., Tapscott, E. B. & Beecher, G. R. (1977). Proceedings of the Society for Experimental Biology and Medicine 155, 157–159.CrossRefGoogle Scholar
Foster, D. O. & Frydman, M. L. (1978). Canadian Journal of Physiology and Pharmacology 56, 110–122.CrossRefGoogle Scholar
Hayashi, M. & Nagasaka, T. (1983). American Journal of Physiology 245, E582–E586.Google Scholar
Hays, W. L. (1981). Statistics, 3rd ed. London: Holt, Rinehart and Winston.Google Scholar
Heusner, A. A. (1985). Annual Review of Nutrition 5, 267–293.CrossRefGoogle Scholar
Hill, J. O., Fried, S. K. & DiGirolamo, M. (1984). American Journal of Physiology 247, R318–R327.Google Scholar
Hill, J. O., Latiff, A. & DiGirolamo, M. (1985). American Journal of Physiology 248, R549–R559.Google Scholar
Oscai, L. B. (1973). Exercise and Sport Sciences Reviews, vol. 1, pp. 103–123 [Wilmore, J.H., editor]. New York: Academic Press.Google Scholar
Pullar, J. D. & Webster, A. J. F. (1977). British Journal of Nutrition 37, 355–363.CrossRefGoogle Scholar
Richard, D., Arnold, J. & LeBlanc, J. (1986). Journal of Applied Physiology 60, 1054–1059.CrossRefGoogle Scholar
Rothwell, N. J., Saville, M. E. & Stock, M. J. (1982). Bioscience Reports 2, 543–549.CrossRefGoogle Scholar
Rothwell, N. J. & Stock, M. J. (1979). Nature 281, 31–35.CrossRefGoogle Scholar
Schacterle, G. R. & Pollack, L. R. (1973). Analytical Biochemistry 51, 654–655.CrossRefGoogle Scholar
Trayhurn, P. (1984). Clinical Endocrinology and Metabolism 13, 451–475.CrossRefGoogle Scholar
Trayhurn, P. & Richard, D. (1985). Biochemical Society Transactions 13, 826–828.CrossRefGoogle Scholar