Fitness in the fit: does physical conditioning affect cardiovasalar risk factors in middle - aged marathon runners?

Gespeichert in:
Bibliographische Detailangaben
Leiter des Projekts:Ketelhut, Reinhard G. (Universität Potsdam / Humanwissenschaftliche Fakultät / Institut für Sportmedizin und Prävention, Tel.: 0331 3771768); Ketelhut, Kerstin
Mitarbeiter:Messerli, F. H.; Badtke, Gernot
Forschungseinrichtung:Universität Potsdam / Humanwissenschaftliche Fakultät / Institut für Sportmedizin und Prävention
Finanzierung:Eigenfinanzierung; Land
Format: Projekt (SPOFOR)
Sprache:Deutsch
Projektlaufzeit:05/1990 - 12/1999
Schlagworte:
Erfassungsnummer:PR019960105397

Zusammenfassung

The study was designed to assess cardiovascular risk factors in marathon runners with different degress of fitness.
A total of 30 male middle-aged marathon runners were divided according to their marathon running time into fit (265+/-8 min), fitter (222+/-5 min) and fittest (178+/-12 min). The three groups of 10 runners each were comparable in age, weight, and body surface area. Cardiovasular risk factors were assessed by measuring arterial pressure before and during exercise (150 watts) and determination of plasma lipoproteins, uric acid, glucose and white blood cell count before and after a marathon run.

(Zwischen)Ergebnisse

All measured laboratory values such as highdensity lipoprotein cholesterol (P<0.05), lowdensity lipoprotein cholesterol (P<0,05), total cholesterol (non-significant), triglycerides (non-significant), blood sugar (non-significant), uric acid (P<0.01) and white blood cell count (P<0.05) indicated a lower cardiovascular risk in the fastest when compared with the slowest runners. Resting blood pressure was similar in the three groups but consistently lower at all levels of exercise in the fittest when compared with the less fit runners. The fittest runners also showed gerater increases in high-density lipoprotein cholesterol after the marathon run (14 % vs 8 % in the slowest runers, P<0.005). Conclusions We conclude that even at the extreme end of a continuum such as represented by well-conditioned, middle-aged marathon runners, cardiovascular risk factors are related to the degree of fitness, as measured by the marathon running time. (Eur Heart J 1996; 17: 199-203)