Estabilidade da aptidão física na transição da infância (7-9 anos) para a puberdade (15 anos): o Estudo Morfofuncional da Criança Vianense.

 

Luis Paulo Rodrigues^1,2

Sérgio Angélico¹

Linda Saraiva¹

Pedro Bezerra^1,3

¹Instituto Politécnico Viana do Castelo, Portugal

²LIBEC, Universidade do Minho, Portugal

³Southern Cross University, Austrália

 

 

Resumo

O objectivo deste estudo foi o de inquirir sobre a estabilidade das trajectórias de aptidão física entre a infância e o final da puberdade. Cento e setenta e quatro rapazes e raparigas foram anualmente avaliados em sete provas constituintes de uma bateria de aptidão física durante três anos consecutivos na infância (7, 8 e 9 anos de idade), sendo sujeitos a uma nova repetição passados seis anos (15 anos). A estabilidade dos resultados foi aferida através dos coeficientes de auto-correlação (Spearman e Pearson) e do Kappa de Cohen (K). Os resultados encontrados demonstraram que a estabilidade da aptidão física na transição do período pubertário (9-15 anos) foi menor do que na infância (7-9 anos), e os rapazes foram sempre mais estáveis que as raparigas. Os valores de auto-correlação inter-idade variaram de 0,43 a 0,81 entre os 7 e os 9 anos, e de 0,23 a 0,66 dos 9 aos 15 anos. Na generalidade, o tracking encontrado ao longo das idades estudadas foi bastante baixo (K entre 0,11 a 0,33), mas quando analisada a estabilidade relativa a quatro canais percentílicos, percebe-se que as crianças com piores prestações tendem a permanecer mais no seu canal percentílico (<p25) enquanto se perspectiva uma maior troca de posições entre os melhores (>p75).

Palavras-chave: tracking, estabilidade, aptidão física, EMCV, longitudinal, adolescência.

 

 

Abstract

Tracking physical fitness from childhood (7-to-9 years old) to late puberty(15 years-old): the Estudo Morfofuncional da Criança Vianense.

Our main goal in this study was to understand the stability and tracking of physical fitness from childhood to late puberty. One hundred seventy four Portuguese boys and girls, participants on the Estudo Morfofuncional da Criança Vianense, were annually assessed on seven physical fitness tests for three consecutive times during pre-pubertal years (ages 7-, 8-, and 9-years old), and once at late puberty (15-years old).

Tracking was assessed using auto-correlation coefficients (Spearman and Pearson) and Cohen’s Kappa (K). Results showed higher stability during pre-puberty years (7-to-9-years old) compared with pubertal years (9-to-15-years-old), with boys’ fitness levels being more stable than girls. Overall age-to-age correlations for 7 to 9 years old ranged between 0,43 and 0,81, and 0,23 and 0,66 for 5 to 15 years old. Tracking across all ages was low (K ranging from 0,11 to 0,33), but children classified in the lower quartile (< p25) tended more to remain on the same performance channel, while the ones classified in the higher quartile (> p75) changed position more often

Key-words: tracking, physical fitness, EMCV, longitudinal, adolescence.

 

 

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Correspondência

Luís Paulo Rodrigues

Escola Superior Educação Viana do Castelo

Av. Capitão Gaspar de Castro -Apartado 513

4901-908 Viana do Castelo

Telefone 258806200, Telefax 258806209

e-mail: lprodrigues@ese.ipvc.pt