Effect of age and combined sprint and strength training on plasma catecholamine responses to a Wingate-test.
OBJECTIVE
The purpose of this research is to study the effects of aging and combined training (sprint and strength) on catecholamine responses [adrenaline (A) and noradrenaline (NA)].


METHODS
Thirty-two male subjects voluntarily participated in this study. They were randomly divided into four groups: A young trained group (age 21.4 ± 1.2 years, YT, n = 8), a young control group (age 21.9 ± 1.9 years, YC, n = 8), a middle-aged trained group (age 40.8 ± 2.8 years, AT, n = 8) and a middle-aged control group (age 40.4 ± 2.0 years, AC, n = 8). YT and AT participated in a high intensity sprint and strength training program (HISST) for 13 weeks. All the participants realized the Wingate-test before (P1) and after (P2) HISST. Plasma A and NA concentrations were determined at rest (A 0, NA0) and at the end of exercise (A max, NAmax).


RESULTS
At P1, a significant difference (p < 0.05) in terms of age was observed for NA0 and A 0 between YT and AT and between control groups YC and AC. This age effect disappeared after training when compared YT and AT. After HISST, A max increased significantly (p < 0.05) in YT and AT (from 3.08 ± 0.17 to 3.23 ± 0.34 nmol l(-1) in YT and from 3.23 ± 0.52 to 4.59 ± 0.10 nmol l(-1) in AT). However, NAmax increased significantly (p < 0.05) in AT only (from 3.34 ± 0.31 to 3.75 ± 0.60 nmol l(-1)). A max was highly increased in AT compared to YT (4.59 ± 0.10 vs. 3.23 ± 0.34 nmol l(-1)), respectively.


CONCLUSIONS
The combined training (sprint and strength) appeared to reduce the age effect of the catecholamine response both at rest and in response to exercise.
Movement, Sport, Health and Sciences laboratory (M2S). UFR-APS, University of Rennes 2/ENS-Rennes, Avenue Charles Tillon, CS 24414, 35044, Rennes Cedex, France.
Maha
M
Sellami
Abderraouf Ben
AB
Abderrahman
Gretchen A
GA
Casazza
Wiem
W
Kebsi
Sophie
S
Lemoine-Morel
Lotfi
L
Bouguerra
Hassane
H
Zouhal
D000328:Adult; D000367:Age Factors; D016022:Case-Control Studies; D002395:Catecholamines / Q000097:blood*; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D010807:Physical Endurance; D055070:Resistance Training; D012420:Running / Q000502:physiology*
D002395:Catecholamines