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Ten hyperplastic obese women were trained physically on an ad-libitum diet preventing them from losing weight. Plasma-insulin concentrations decreased during oral glucose-tolerance test (OGTT), an effect which was more clearly seen after atropine administration. After intravenous-glucose administration (IVGTT) these effects were absent or much smaller. Insulin secretion stimulated by the sight and smell of food (CIS) was more pronounced after training, this increase being abolished by atropine. Physical training produces vagotony with well-known effects on circulatory variables such as a slower resting heart rate. Both the results after OGTT and CIS show the effects of increased vagotony also on insulin secretion. This effect tends to hide the insulin-concentration-lowering effect of physical training. This consequence of training is possibly dependent on enteric factors associated with insulin secretion since it was not found after IVGTT.
M Krotkiewski, and
L Sjöström, and
P Björntorp
January 1976,
Scandinavian journal of rehabilitation medicine. Supplement,
M Krotkiewski, and
L Sjöström, and
P Björntorp
March 1977,
Metabolism: clinical and experimental,
M Krotkiewski, and
L Sjöström, and
P Björntorp
August 1973,
Scandinavian journal of clinical and laboratory investigation,
M Krotkiewski, and
L Sjöström, and
P Björntorp
December 1987,
Diabetes,
M Krotkiewski, and
L Sjöström, and
P Björntorp
August 1970,
Metabolism: clinical and experimental,
M Krotkiewski, and
L Sjöström, and
P Björntorp
January 1982,
European journal of applied physiology and occupational physiology,
M Krotkiewski, and
L Sjöström, and
P Björntorp
November 1999,
Medicine and science in sports and exercise,
M Krotkiewski, and
L Sjöström, and
P Björntorp
December 1985,
Diabetologia,
M Krotkiewski, and
L Sjöström, and
P Björntorp
December 1981,
Zeitschrift fur arztliche Fortbildung,
M Krotkiewski, and
L Sjöström, and
P Björntorp
March 1967,
Circulation research,
