Effect of Resistance Training on Body Composition of Adolescents: ABCD Growth Study

• Published in: Indian pediatrics Vol. 60; no. 4; pp. 285 - 289
• Main Authors: de Souza Dias, Jefferson, Agostinete, Ricardo Ribeiro, Urban, Jacqueline Bexiga, Torres, Wésley, de Lima Mesquita, Eduardo Duarte, Cayres-Santos, Suziane Ungari, de Moraes Chagas, Lucas Gabriel, Lemes, Ítalo Ribeiro, Fernandes, Rômulo Araújo
• Format: Journal Article
• Language: English
• Published: New Delhi Springer India 01-04-2023
• Subjects: Absorptiometry, Photon; Adipose Tissue; Adolescent; Body Composition; Bone Density - physiology; Female; Humans; Male; Maternal and Child Health; Medicine; Medicine & Public Health; Pediatric Surgery; Pediatrics; Research Paper; Resistance Training; Bone density; Exercise; Adiposity; Growth
• ISSN: 0019-6061; 0974-7559
• DOI: 10.1007/s13312-023-2860-1

Objective
To analyze the relationship between resistance training and body composition in adolescents.
Methods
A longitudinal 12-month follow up of 190 adolescents of both sexes categorized into three groups according to resistance training practice, as non-engagement (
n
=121), irregular engagement (
n
=44), and frequent engagement (
n
=25). The outcomes adopted were bone mineral density (BMD), lean soft tissue (LST), and body fatness (BF).
Results
Adolescents frequently engaged in resistance training presented higher gains in mean (95%CI) LST [6.1 (3.7 to 8.5) kg vs 2.4 (1.4 to 3.4) kg;
P
=0.027] and BMD-upper limbs [0.096 (0.072 to 0.121) g/cm
2
vs 0.046 (0.036 to 0.056) g/cm
2
;
P
=0.002] than adolescents who were not engaged in resistance training, respectively. Findings were more consistent for boys than girls (models were not significant among girls: LST
P
= 0.721; BMD-upper limbs
P
=0.053).
Conclusion
Regular engagement in resistance training was related to higher gains in muscle mass and bone density, especially among boys.