Einflu\ einer stufenweisen Laufbandergometrie bei Kindern und Erwachsenen auf die Plasmacatecholamine, die aerobe und anaerobe KapazitÄt
- 1 November 1981
- journal article
- research article
- Published by Springer Nature in European Journal of Applied Physiology
- Vol. 47 (3) , 301-311
- https://doi.org/10.1007/bf00422476
Abstract
Adrenaline, noradrenaline, lactate and glucose levels in the blood, together with the heart rate and oxygen intake were examined in eight boys (12.8±0.8 years) and seven adults (27.8±2.9 years) during a graduated treadmill exercise. At rest, noradrenaline is higher in the adults, while adrenaline, lactate, glucose, heart rate and relative oxygen intake show no differences between the groups. At the same exercise levels, adrenaline (+90–180%), noradrenaline (+28–77%) and the heart rate are higher in boys, corresponding to a higher relative exercise load, and glucose, lactate and the relative oxygen intake show no differences. During maximum treadmill exercise adrenaline, glucose and the relative oxygen intake show no differences between the groups, whereas the noradrenaline (−30%) and lactate levels (−25%) are lower and the heart rate is 4% higher in the boys. There is an identical increase in lactate and catecholamine levels (r=0.92 and 0.87) with a lower correlation with high intensity “anaerobic” physical exercise, which shows no age dependent difference until about the age of 40. The maximum catecholamine (adrenaline and noradrenaline) and lactate concentration is 25% lower in the boys; an indication of reduced maximum sympathetic activity and reduced maximum anaerobic capacity is seen. The constant relationship between adrenaline and noradrenaline during physical work (r=0.90 and 0.85), also with a lower correlation at high intensiv physical exercise, changes from 1∶3.5 (boys) to 1∶5.5 (adults) (pr=0,92 und 0,87), das keine altersabhÄngige Änderung bis zur vierten Lebensdekade erfÄhrt, jedoch bei höhergradigen „anaeroben” Beanspruchungen eine zunehmende UnschÄrfe erfÄhrt. Die maximale Catecholamin- (Adrenalin und Noradrenalin) und Lactatkonzentration ist bei den Knaben 25% geringer; eine Bedeutung des verminderten maximalen sympathischen Antriebes für die im gleichen Umfang verminderte anaerobe KapazitÄt wird angenommen. Das wÄhrend Körperarbeit konstante VerhÄltnis Adrenalin zu Noradrenalin (r=0,90 und 0,85), das ebenfalls eine zunehmende UnschÄrfe bei sub- bis maximaler Belastung zeigt, Ändert sich bei jüngeren Erwachsenen (1∶5,5) gegenüber den Knaben (1∶3,5) (p<0.001) durch eine vermehrte Noradrenalinfrei-setzung in Ruhe, auf submaximalen Stufen und wÄhrend maximaler Ergometerarbeit, die als Ursache eines altersabhÄngigen negativ chronotropen Effektes angesehen wird.Keywords
This publication has 24 references indexed in Scilit:
- Pubertal stage differences in hormonal and hematological responses to maximal exercise in malesJournal of Applied Physiology, 1979
- Catecholamines and ExerciseDiabetes, 1979
- Metabolic and cardiovascular responses to norepinephrine in trained and nontrained human subjectsJournal of Applied Physiology, 1977
- Age-Adjusted Plasma Norepinephrine Levels Are Similar in Normotensive and Hypertensive SubjectsNew England Journal of Medicine, 1977
- Simultaneous radioenzymatic determination of plasma and tissue adrenaline, noradrenaline and dopamine within the femtomole rangeLife Sciences, 1976
- Effect of Physical Training on Hemodynamic Response during Submaximal and Maximal Exercise in 11–13‐Year Old BoysActa Physiologica Scandinavica, 1973
- MUSCLE METABOLITES DURING EXERCISE IN PUBERTAL BOYSActa Paediatrica, 1971
- The effect of physical training on insulin production in obesityMetabolism, 1970
- Throxine and noradrenaline on noradrenaline sensitivity, cold resistance, and brown fatAmerican Journal of Physiology-Legacy Content, 1970
- Physical working capacity and physical performanceMedicine & Science in Sports & Exercise, 1969