O.4.3.: Physical ac i i y in child en and adolescen s 01
Abs ac ci a ion ID: ckad133.187
O.4.3-1 Gi ls wi h low mo o compe ence may be
pa icula ly a isk o insu icien skele al loading;
la en p o iles analysis o a ou -yea ollow-up o
Finnish adolescen s
Timo Ran alainen
1
, A o G a
˚s en
1,2
, Ee o A. Haapala
1
, F ancisco
B. O ega
1,3
, Mikko Huh iniemi
1
, Timo Jaakkola
1
1
Facul y o Spo and Heal h Sciences, Uni e si y o Jy a
¨skyla
¨, Finland
2
Uni ed A ab Emi a es Uni e si y, College o Educa ion, Al Ain, Abu Dhabi,
Uni ed A ab Emi a es
3
Depa men o Physical Educa ion and Spo s, Facul y o Spo Sciences,
Uni e si y o G anada, G anada, Spain; [email p o ec ed]
Pu pose
Adequa e skele al loads du ing he adolescen g ow h spu a e
elemen al in building a obus skele on. Adolescen s wi h
poo e mo o compe ence a e less ac i e and de elop a less
obus skele on compa ed o hei pee s wi h be e de elop
mo o compe ence. Howe e , ew longi udinal examina ions
o mo o compe ence and skele al loading h ough adolescence
ha e been epo ed. The e o e, he pu pose o he p esen
s udy was o explo e he associa ion be ween mo o compe-
ence and ee-li ing bone-gene a ing (os eogenic) skele al
load ajec o ies among adolescen s.
Me hods
A o al o N = 562 5
h
g ade s (11 o 13 yea s-o -age) we e
ini ially included in he sample and we e ollowed up annually
o ou yea s om 2017 o 2020 (N = 239 in 2020). The
child en we e asked o wea a wais -wo n accele ome e o 7
days and mo o compe ence was assessed wi h 5-leap and side-
o-side jumping es s once a yea . La en p o iles we e
iden i ied based on mo o compe ence, and skele al loading
was es ima ed using an os eogenic index, which combines he
numbe o loading peaks in pa icula in ensi y ca ego ies akin
o coun ing s eps bu wi h accoun ing o he magni ude o he
impac .
Resul s
Th ee mo o compe ence g oups a ose om he da a o
bo h boys and gi ls and all g oups exhibi ed pe sis en low,
mid o high mo o compe ence h oughou he ollow-up.
The la en g oup wi h he low mo o compe ence
2023 HEPA Eu ope Con e ence i75
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consis en ly exhibi ed he lowes skele al loads (10 o 20%
below he highes mo o compe ence), and he highes
mo o compe ence g oup he highes wi h he mid-g oup in
be ween. All la en g oups declined in skele al loads o e he
ollow-up ( om os eogenic index 420 SD[80] o 300[90])
wi h no di e ence in he s eepness o he decline among
boys. Howe e , he lowes mo o compe ence g oup among
gi ls had a sligh ly s eepe decline in skele al loads han he
o he g oups.
Conclusions
he inding ha mo o compe ence is associa ed wi h skele al
loading among adolescen s was con i med in his longi udinal
s udy. No ably, gi ls wi h he lowes mo o compe ence had
he s eepes decline in skele al loading o e he ollow-up.
Policies aiming o imp o e undamen al mo emen skills
could be expec ed o imp o e skele al de elopmen pa icula ly
among less mo o compe en gi ls.
i76 Eu opean Jou nal o Public Heal h, Vol. 33, Supplemen 1, 2023
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