TY  - JOUR
A1  - Chaouachi, Anis
A1  - Ben Othman, Aymen
A1  - Makhlouf, Issam
A1  - Young, James D.
A1  - Granacher, Urs
A1  - Behm, David George
T1  - Global Training Effects of Trained and Untrained Muscles With Youth Can be Maintained During 4 Weeks of Detraining
JF  - Journal of strength and conditioning research : the research journal of the NSCA
N2  - Global (whole-body) effects of resistance training (i.e., cross-education) may be pervasive with children. Detraining induces less substantial deficits with children than adults. It was the objective of this study to investigate the global responses to 4 weeks of detraining after 8 weeks of unilateral leg press (LP) training in 10-13-year-old, pre-peak-height-velocity stage boys. Subjects were randomly separated into 2 unilateral resistance training groups (high load/low repetitions [HL-LR] and low load/high repetitions [LL-HR], and control group). Assessments at pre-training, post-training, and detraining included dominant and nondominant limbs, unilateral, 1 repetition maximum (1RM) and 60% 1RM LP, knee extension, knee flexion, elbow flexion, and handgrip maximal voluntary isometric contraction (MVIC), and countermovement jump (CMJ). All measures significantly increased from pre-test to detraining for both training programs, except for elbow flexion MVIC with increases only with HL-LR. All measures except CMJ and handgrip MVIC significantly decreased from post-test to detraining, except for elbow flexion MVIC with decreases only with HL-LR. The dominant trained limb experienced significantly greater LP improvements (pre- to detraining) and decrements (post- to detraining) with LP 1RM and 60% 1RM LP. In conclusion, youth HL-LR and LL-HR global training effects of trained and untrained limbs demonstrate similar benefits (pre- to detraining) and decrements (post- to detraining) with detraining. The findings emphasize that training any muscle group in a child can have positive global implications for improved strength and power that can persist over baseline measures for at least a month.
KW  - adolescents
KW  - strength training
KW  - deconditioning
KW  - cross-education
KW  - children
Y1  - 2019
U6  - https://doi.org/10.1519/JSC.0000000000002606
SN  - 1064-8011
SN  - 1533-4287
VL  - 33
IS  - 10
SP  - 2788
EP  - 2800
PB  - Lippincott Williams & Wilkins
CY  - Philadelphia
ER  -