The impact of gender, body dimension and body composition on hand-grip strength in healthy children (Articolo in rivista)

Type
Label
  • The impact of gender, body dimension and body composition on hand-grip strength in healthy children (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Sartorio A., Lafortuna C.L., Pogliaghi S., Trecate L. (2002)
    The impact of gender, body dimension and body composition on hand-grip strength in healthy children
    in Journal of endocrinological investigation (Testo stamp.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sartorio A., Lafortuna C.L., Pogliaghi S., Trecate L. (literal)
Pagina inizio
  • 431 (literal)
Pagina fine
  • 435 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 25 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • The impact of gender, body dimension and body composition on hand-grip strength in healthy children (literal)
Abstract
  • Maximum handgrip (HG) strength, body composition and main anthropometric variables were evaluated in 278 children with normal weight and growth, aged 5-15 yr divided into three age groups: group 1, age 7.6 yr ± 0.9 SD, (Tanner stage 1); group 2, age 10.8 ± 0.7, Tanner stage: 2-3; group 3, age 13.2 ± 0.9, Tanner stage: 4-5). Weight, height, body surface area (BSA), BMI, % body fat (BF) and fat-free mass (FFM) increased progressively and significantly from the younger to the older age group. A significant difference between genders was detected only for BF and FFM, females having a higher fat mass and a lower FFM compared to males. Most children were right-handed (91%). In either genders, a curvilinear relation was detected between HG strength and age, with best fit for the dominant (d) hand given by the equations: dHG = 5.891 *10 0.051 age, r2 = 0.986, p<0.001 in males and dHG = 6.163 *10 0.045 age, r2 = 0.973, p<0.001 in females. The increase in HG strength after 11 yr appears to be steeper in males as compared with what found in females. In both d and non-dominant (nd) hand, a significant difference in HG strength was detected between males and females, the average difference being about 10% at all ages. For both genders, nd hand was significantly weaker than d hand in the older age groups (2 and 3), but not in the younger group 1. Age and gender dependent differences in HG strength (but not differences between d and nd hand) disappear if HG strength is normalised for FFM. Thus, in general, dHG strength normalised for FFM resulting on average to be 0.67±0.11 kg/kg. A multiple linear regression analysis indicated that HG was positively correlated with BMI, BSA, stature, stature2, and FFM (p<0.001 for all correlations) without differences between genders, while a negative correlation was found between HG strength and % BF. The most significant correlation was found between HG strength and FFM, without any significant difference between genders, so that the overall equation describing the line for the d hand was: dHG strength = 2.32 + 0.63 FFM, r2 = 0.72, p<0.001. In conclusion, the present study indicates that the age dependent increase of HG strength as well as the between gender differences are strongly related to changes of FFM values occurring during childhood. Moreover, the study provides a standard normative value of maximal HG strength for the healthy children population in Northern Italy. (literal)
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