En annen interessant studie som så på kun fotballtrening, eller fotballtrening + et par styrkeøkter i uka for yngre fortballspillere.
Temmelig bra studie hvor resultatet er økte fysiske kvaliteter som spenst og hurtighet ved å trene styrke ved siden av fotball istedet for kun fotball. Og før du, "The Child". nevner at dette er fotball, så nevner jeg igjen at jeg fra mitt ståsted ikke diskuterer spesifikt om sprint i denne diskusjonen, men den generelle utøvers effekt av styrketrening.
Effects of 12-Week On-Field Combined Strength and Power Training on Physical Performance Among U-14 Young Soccer Players.Wong PL, Chamari K, Wisløff U.
1Department of Physical Education, Hong Kong Baptist University, HongKong; 2Scientific Research Unit, "Evaluation, Sport, Health" at the National Centre of Medicine and Science in Sports, Tunis, Tunisia; and 3Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Norway.
Wong, P-L, Chamari, K, and Wisløff, U. Effects of 12-week on-field combined strength and power training on physical performance among U-14 young soccer players. J Strength Cond Res 23(x): 000-000, 2009-This study examined the effects of on-field combined strength and power training (CSPT) on physical performance among U-14 young soccer players. Players were assigned to experimental (EG, n = 28) and control groups (CG, n = 23). Both groups underwent preseason soccer training for 12 weeks. EG performed CSPT twice a week, which consisted of strength and power exercises that trained the major muscles of the core, upper, and lower body. CSPT significantly (p < 0.05) improved vertical jump height, ball-shooting speed, 10 m and 30 m sprint times, Yo-Yo intermittent endurance run (YYIER), and reduced submaximal running cost (RC). CSPT had moderate effect on vertical jump, ball-shooting, 30 m sprint, and YYIER, small effect on 10 m sprint, RC, and maximal oxygen uptake. YYIER had significant (p < 0.05) correlations with 10 m (r = -0.47) and 30 m (r = -0.43) sprint times, ball-shooting speed (r = 0.51), and vertical jump (r = 0.34).
The CSPT can be performed together with soccer training with no concomitant interference on aerobic capacity and with improved explosive performances. In addition, it is suggested that CSPT be performed during the preseason period rather than in-season to avoid insufficient recovery/rest or overtraining.