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Int J Sports Med 1986; 07(4): 232-235
DOI: 10.1055/s-2008-1025765
© Georg Thieme Verlag Stuttgart · New York

Influence of the Degree of Metabolic Control on Physical Fitness in Type I Diabetic Adolescents

J. R. Poortmans1 , Ph. Saerens1 , R. Edelman2 , F. Vertongen3 , H. Dorchy4
  • 1Chimie Physiologique, Laboratoire de l'Effort, Institut Supéorieur d'Education Physique et Kinésithérapie, Université Libre de Bruxelles, Bruxelles, Belgium
  • 2Service de Cardiologie, Hôpital Universitaire Saint-Pierre, Université Libre de Bruxelles, Bruxelles, Belgium
  • 3Institut de Biologie Médicale, Hôpital Universitaire Saint-Pierre, Université Libre de Bruxelles, Bruxelles, Belgium
  • 4Unite de Diabétologie, Département de Pédiatrie, Hôpital Universitaire Saint-Pierre, Université Libre de Bruxelles, Bruxelles, Belgium
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Publication History

Publication Date:
14 March 2008 (online)

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Abstract

Seventeen type I male diabetic adolescents and 17 control subjects matched for age, height, and weight were submitted to maximal exercise on a bicycle ergometer. The diabetic subjects were divided into two groups according to their degree of metabolic control using total glycosylated hemoglobin (HbA1): group 1, diabetics with HbA1 < 8.5% (n=9) and group 2, diabetics with HbA1 < 8.5% (n=8). Oxygen uptake, pulmonary ventilation, and heart rate were recorded at rest and at maximal load. Glucose, lactate, and free fatty acids were determined in blood before and after exercise. Maximal work load and oxygen uptake were significantly lower in the two diabetic groups than in the healthy controls. An inverse relationship was observed between HbA, concentration and the maximal work load (r = -0.63; P < 0.01). It can be concluded that diabetic adolescents should obtain the best possible degree of metabolic control to improve their performances.

Key words

diabetes mellitus - adolescents - glycosylated hemoglobin - exertion - aerobic capacity

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