Hormonal (Cortical-Gonadotropic Axis) and Physical Changes With Two Years Intense Exercise Training in Elite Young Soccer Players.
Hammami, MA, Ben Abderrahman, A, Hackney, AC, Kebsi, W, Owen, AL, Nebigh, A, Racil, G, Tabka, Z, and Zouhal, H. Hormonal (cortical-gonadotropic axis) and physical changes with two years intense exercise training in elite young soccer players. J Strength Cond Res 31(9): 2388-2397, 2017-The aim of this study was to investigate the effects of 2 soccer-training seasons on physical fitness and hormone concentrations in elite youth soccer players. Twenty male elite soccer players (SP, age 14.5 ± 0.4 years) and 20 male control subjects (CS, age 14.3 ± 0.3 years) participated in the study. Anthropometric measurements, aerobic (Yo-Yo Intermittent Recovery Test Level 1 [YYIRT1]) and anaerobic soccer relevant performances (jump and sprint tests), blood testosterone (T), cortisol (C), sex hormone binding globulin (SHBG), and T/C ratio were assessed 5 times (from T0 to T4) during 2 competitive seasons. Significant differences from basal values (Δ) of T, SHBG, and C between SP and CS were observed (p < 0.01). Additionally, T and T/C ratio changes were positively correlated with physical performance (p ≤ 0.05). In conclusion, as expected, higher T concentration and greater power performance were observed in the soccer players group compared with controls. Our findings also show that the T concentrations and power performance outcomes co-vary positively over the 2 soccer seasons in soccer players.
1Movement, Sport and Health Sciences Laboratory (M2S), UFR-APS, University of Rennes 2-ENS Cachan, Rennes, France; 2High Institute of Sport and Physical Education (ISSEP) Ksar Saïd, Tunis, Tunisia; 3Laboratory of Physiology and Functional Explorations, Ibn Eljazzar Faculty of Medicine, University of Sousse, Sousse, Tunisia; 4"Sport Performance Optimization" National Center of Medicine and Science in Sport (CNMSS), Tunis, Tunisia; 5Endocrine Section, Applied Physiology Laboratory, Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, North Carolina; 6Center for Sport Research and Innovation, University of Claude Bernard Lyon, Lyon, France; and 7Department of Biological Sciences, Faculty of Science of Tunis, University Tunis el Manar, Tunis, Tunisia[LINE SEPARATOR].
Mohamed Ali
MA
Hammami
Abderraouf
A
Ben Abderrahman
Anthony C
AC
Hackney
Wiem
W
Kebsi
Adam L
AL
Owen
Amar
A
Nebigh
Ghazi
G
Racil
Zouhair
Z
Tabka
Hassane
H
Zouhal
D000293:Adolescent; D054874:Athletic Performance / Q000502:physiology*; D001837:Body Weights and Measures; D015444:Exercise / Q000502:physiology; D006339:Heart Rate; D006801:Humans; D006854:Hydrocortisone / Q000096:biosynthesis*; D008297:Male; D010809:Physical Fitness / Q000502:physiology; D012621:Seasons; D012738:Sex Hormone-Binding Globulin / Q000096:biosynthesis*; D012916:Soccer / Q000502:physiology*; D013739:Testosterone / Q000096:biosynthesis*
D012738:Sex Hormone-Binding Globulin; D013739:Testosterone; D006854:Hydrocortisone