Socio-demographic differences in Colombian children's muscular fitness

Does scaling for differences in body size present a challenge to conventional thinking?

Título traducido de la contribución: Diferencias sociodemográficas en el estado físico muscular de los niños colombianos: ¿El escalamiento por diferencias en el tamaño corporal representa un desafío para el pensamiento convencional?

Alan M. Nevill, Gavin Sandercock, Michael J. Duncan, Ian Lahart, Jorge Enrique Correa-Bautista, Robinson Ramirez-Velez

Resultado de la investigación: Contribución a RevistaArtículo

Resumen

Objetivos
En los países de ingresos bajos a medios, los niños de las zonas menos desfavorecidas (de familias con un estatus socioeconómico más alto[SES]) tienen un estado físico muscular superior al de los niños de los grupos con un estatus socioeconómico más bajo. También son más altos y pesados, factores asociados con la condición física muscular. El propósito de este estudio fue identificar cualquier diferencia sociodemográfica en la condición física muscular de los niños colombianos y examinar cómo estas conclusiones pueden ser modificadas mediante la escala de las diferencias en el tamaño corporal.

Métodos
Un total de 38.098 jóvenes (46% niñas), estudiantes de noveno grado (14-15 años), participaron en un estudio de diseño transversal. Registramos SES y los ingresos familiares, la estatura y la masa. Para evaluar el estado físico de los músculos se utilizaron el salto de pie y la fuerza de la empuñadura. Se adoptó un modelo alométrico multiplicativo para ajustar las diferencias de tamaño corporal.

Resultados
Los niños de los grupos de SES medio-alto saltaron significativamente más alto que los niños del grupo de SES más bajo, aunque no se observó ninguna diferencia en la fuerza de agarre en el grupo de SES. Después de ajustar el tamaño del cuerpo, los niños con un SES más alto y con ingresos familiares más altos tenían una fuerza de agarre significativamente menor, y sus rendimientos superiores de altura de salto se mantuvieron, pero se redujeron enormemente. Sólo los niños del grupo de SES más alto ahora saltaron significativamente más alto que el grupo de SES más bajo.

4. Conclusiones
El rendimiento superior en el salto y la no diferencia en la fuerza de agarre de los niños colombianos de las clases superiores de SES puede simplemente reflejar su físico superior. Cuando se tiene en cuenta el tamaño del cuerpo, estas diferencias se reducen o incluso se invierten, lo que sugiere que los niños de los grupos con un SES más alto no deben ser complacientes con respecto a su aparente superior aptitud muscular.
Idioma originalEnglish (US)
Número de artículoe23128
PublicaciónAmerican Journal of Human Biology
Volumen30
N.º4
DOI
EstadoPublished - abr 6 2018

All Science Journal Classification (ASJC) codes

  • Anatomy
  • Ecology, Evolution, Behavior and Systematics
  • Anthropology
  • Genetics

Citar esto

Nevill, Alan M. ; Sandercock, Gavin ; Duncan, Michael J. ; Lahart, Ian ; Correa-Bautista, Jorge Enrique ; Ramirez-Velez, Robinson. / Socio-demographic differences in Colombian children's muscular fitness : Does scaling for differences in body size present a challenge to conventional thinking?. En: American Journal of Human Biology. 2018 ; Vol. 30, N.º 4.
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title = "Socio-demographic differences in Colombian children's muscular fitness: Does scaling for differences in body size present a challenge to conventional thinking?",
abstract = "Objectives: In low- to middle-income countries, children from less-deprived areas (from families of higher socio-economic status [SES]) have superior muscular fitness than those from low-SES groups. They are also taller and heavier, factors associated with muscular fitness. The purpose of this study was to identify any socio-demographic differences in Colombian children's muscular fitness and examine how these conclusions can be modified by scaling for differences in body size. Methods: A total of 38,098 youths (46{\%} girls), ninth grade students (aged 14–15 years), participated in a study of cross-sectional design. We recorded SES and family incomes, stature, and mass. Standing broad jump and handgrip strength were used to assess muscular fitness. A multiplicative allometric model was adopted to adjust for body-size differences. Results: Children from the mid- to high-SES groups jumped significantly higher than children from the lowest SES group, although no SES group difference in grip strength was observed. After adjusting for body size, children from higher SES and with higher family incomes had significantly lower handgrip strength, and their superior jump height performances remained but were greatly reduced. Only children from the highest SES now jumped significantly higher that the lowest SES group. Conclusions: The superior jump performance and no difference in handgrip strength of Colombian children from higher SES may simply reflect their superior physiques. When body size is accounted for, these differences are reduced or even reversed, suggesting that children from higher SES groups should not be complacent regarding their apparent superior muscular fitness.",
author = "Nevill, {Alan M.} and Gavin Sandercock and Duncan, {Michael J.} and Ian Lahart and Correa-Bautista, {Jorge Enrique} and Robinson Ramirez-Velez",
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Socio-demographic differences in Colombian children's muscular fitness : Does scaling for differences in body size present a challenge to conventional thinking? / Nevill, Alan M.; Sandercock, Gavin; Duncan, Michael J.; Lahart, Ian; Correa-Bautista, Jorge Enrique; Ramirez-Velez, Robinson.

En: American Journal of Human Biology, Vol. 30, N.º 4, e23128, 06.04.2018.

Resultado de la investigación: Contribución a RevistaArtículo

TY - JOUR

T1 - Socio-demographic differences in Colombian children's muscular fitness

T2 - Does scaling for differences in body size present a challenge to conventional thinking?

AU - Nevill, Alan M.

AU - Sandercock, Gavin

AU - Duncan, Michael J.

AU - Lahart, Ian

AU - Correa-Bautista, Jorge Enrique

AU - Ramirez-Velez, Robinson

PY - 2018/4/6

Y1 - 2018/4/6

N2 - Objectives: In low- to middle-income countries, children from less-deprived areas (from families of higher socio-economic status [SES]) have superior muscular fitness than those from low-SES groups. They are also taller and heavier, factors associated with muscular fitness. The purpose of this study was to identify any socio-demographic differences in Colombian children's muscular fitness and examine how these conclusions can be modified by scaling for differences in body size. Methods: A total of 38,098 youths (46% girls), ninth grade students (aged 14–15 years), participated in a study of cross-sectional design. We recorded SES and family incomes, stature, and mass. Standing broad jump and handgrip strength were used to assess muscular fitness. A multiplicative allometric model was adopted to adjust for body-size differences. Results: Children from the mid- to high-SES groups jumped significantly higher than children from the lowest SES group, although no SES group difference in grip strength was observed. After adjusting for body size, children from higher SES and with higher family incomes had significantly lower handgrip strength, and their superior jump height performances remained but were greatly reduced. Only children from the highest SES now jumped significantly higher that the lowest SES group. Conclusions: The superior jump performance and no difference in handgrip strength of Colombian children from higher SES may simply reflect their superior physiques. When body size is accounted for, these differences are reduced or even reversed, suggesting that children from higher SES groups should not be complacent regarding their apparent superior muscular fitness.

AB - Objectives: In low- to middle-income countries, children from less-deprived areas (from families of higher socio-economic status [SES]) have superior muscular fitness than those from low-SES groups. They are also taller and heavier, factors associated with muscular fitness. The purpose of this study was to identify any socio-demographic differences in Colombian children's muscular fitness and examine how these conclusions can be modified by scaling for differences in body size. Methods: A total of 38,098 youths (46% girls), ninth grade students (aged 14–15 years), participated in a study of cross-sectional design. We recorded SES and family incomes, stature, and mass. Standing broad jump and handgrip strength were used to assess muscular fitness. A multiplicative allometric model was adopted to adjust for body-size differences. Results: Children from the mid- to high-SES groups jumped significantly higher than children from the lowest SES group, although no SES group difference in grip strength was observed. After adjusting for body size, children from higher SES and with higher family incomes had significantly lower handgrip strength, and their superior jump height performances remained but were greatly reduced. Only children from the highest SES now jumped significantly higher that the lowest SES group. Conclusions: The superior jump performance and no difference in handgrip strength of Colombian children from higher SES may simply reflect their superior physiques. When body size is accounted for, these differences are reduced or even reversed, suggesting that children from higher SES groups should not be complacent regarding their apparent superior muscular fitness.

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