Author(s): Pereira, Sara ; Santos, Carla ; Tani, Go ; Freitas, Duarte ; Garbeloto, Fernando ; Guimarães, Eduardo ; Robinson, Leah E. ; Baxter-Jones, Adam ; Katzmarzyk, Peter T. ; Maia, José
Date: 2021
Persistent ID: http://hdl.handle.net/10400.13/5218
Origin: DigitUMa - Repositório da Universidade da Madeira
Subject(s): MID-growth spurt; Children; Longitudinal; Motor performance; .; Faculdade de Ciências Sociais
We aim to (1) estimate age of attainment of the peak mid-growth spurt in stature (age-at-peak MGS) in pre-adolescent boys and girls; (2) identify the timing, intensity, and sequences of physical fitness (PF) spurts aligned by the age-at-peak MGS; and (3) identify any sex differences in PF spurts aligned by age-at peak MGS. The sample included 180 Portuguese children (90 girls) aged 6 to 10 years at study entry who were followed annually for 4 years. Height, health-, and performance-related PF were assessed. Age-at peak MGS and PF spurts were estimated using a non-smooth mathematical procedure. Boys’ and girls’ age-at-peak MGS occurred at 7.8 ± 0.47 years and 8.0 ± 0.72 years, respectively. PF spurts’ timing aligned by age-at-peak MGS were as follows: (1) before age-at-peak MGS: boys – static strength, aerobic capacity, explosive leg strength, and flexibility; girls – speed, agility, aerobic capacity, and upper body strength; (2) coincident with age-at-peak MGS: girls – explosive leg strength and flexibility; (3) after age-at-peak MGS: boys – abdominal strength, upper body strength, agility, and speed; girls – abdominal strength and static strength. Boys and girls attained their MGS at relatively similar ages. However, the timing and sequences of PF spurts, aligned on age-at-MGS, were different between boys and girls.
