title: Twelve Weeks of Plyometric Training Improves Motor Performance of 7- to 9-Year-Old Boys Who Were Overweight/Obese: A Randomized Controlled Intervention.
abstract: Nobre, GG, de Almeida, MB, Nobre, IG, dos Santos, FK, Brinco, RA, Arruda-Lima, TR, de-Vasconcelos, KL, de-Lima, JG, Borba-Neto, ME, Damasceno-Rodrigues, EM, Santos-Silva, SM, Leandro, CG, and Moura-dos-Santos, MA. Twelve weeks of plyometric training improves motor performance of 7- to 9-year-old boys who were overweight/obese: a randomized controlled intervention. J Strength Cond Res 31(8): 2091-2099, 2017-The prevalence of childhood overweight/obesity has increased, and physical training at school may to be effective to combat this scenario. We analyzed the effects of a protocol of plyometric training on body composition and motor performance of boys who were overweight/obese aged 7-9 years. The sample was randomly assigned into 2 groups: plyometric training group (T, n = 40) and control group (C, n = 19). Training consisted of 20 min·d (twice a week, during 12 weeks) of lower extremity plyometric exercise. Health-related physical fitness was measured by handgrip strength, standing long jump (SLJ), curl-ups, sit and reach, square test, running speed, and mile run test. Gross motor coordination was evaluated by means of the Körperkoordinations-test für Kinder (KTK) tests. Baseline and postintervention differences were investigated, and effect size was estimated through Cohen's d coefficient. Both groups showed increased body weight, height, and sitting height after intervention with a negligible effect size. Only T group showed increased fat-free mass (p = 0.011) compared with baseline values with small effect size. Plyometric training improved handgrip strength (d = 0.23), sit and reach (d = 0.18), curl-ups (d = 0.39), SLJ (d = 0.80), agility (d = 0.48), and time in the mile run test (d = 0.38). For gross motor coordination results, T group showed better performance in all tests after plyometric training with moderate/large effect size. Thus, 12 weeks of PT improved health-related physical fitness components and motor coordination acquisition of 7- to 9-year-old boys who were overweight/obese.
authors: 1Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, Vitória de Santo Antão, PE, Brazil; 2Department of Physical Education, Federal University of Viçosa, Viçosa, MG, Brazil; 3Department of Nutrition, Federal University of Pernambuco, Recife, Brazil; and 4Superior School of Physical Education, University of Pernambuco, Recife, PE, Brazil.
authors: Gabriela G
authors: GG
authors: Nobre
authors: Marcelus B
authors: MB
authors: de Almeida
authors: Isabele G
authors: IG
authors: Nobre
authors: Fernanda K
authors: FK
authors: Dos Santos
authors: Raphael A
authors: RA
authors: Brinco
authors: Thalison R
authors: TR
authors: Arruda-Lima
authors: Kenya L
authors: KL
authors: de-Vasconcelos
authors: Jociellen G
authors: JG
authors: de-Lima
authors: Manoel E
authors: ME
authors: Borba-Neto
authors: Emmanuel M
authors: EM
authors: Damasceno-Rodrigues
authors: Steve M
authors: SM
authors: Santos-Silva
authors: Carol G
authors: CG
authors: Leandro
authors: Marcos A
authors: MA
authors: Moura-Dos-Santos
mesh_terms: D001823:Body Composition; D015992:Body Mass Index; D002648:Child; D005080:Exercise Test; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D053580:Muscle Strength / Q000502:physiology; D050177:Overweight / Q000628:therapy*; D063766:Pediatric Obesity / Q000628:therapy; D010809:Physical Fitness / Q000502:physiology*; D059385:Plyometric Exercise / Q000379:methods*