Normative values for relative schoolbag weight in primary school children aged 6-14 from Czech Republic: A pilot study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14510%2F19%3A00116345" target="_blank" >RIV/00216224:14510/19:00116345 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1371/journal.pone.0225741" target="_blank" >https://doi.org/10.1371/journal.pone.0225741</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1371/journal.pone.0225741" target="_blank" >10.1371/journal.pone.0225741</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Normative values for relative schoolbag weight in primary school children aged 6-14 from Czech Republic: A pilot study

Popis výsledku v původním jazyce

Little evidence from observational studies has been provided regarding `optimal' relative schoolbag load during primary education. Also, no study to date has provided reference-based standards for relative schoolbag weight. Therefore, the main purpose of the study was to establish normative values of relative schoolbag weight in a sample of children. In this crosssectional study, we recruited 584 primary school students aged 6-14 (mean(age)+/- SD = 9.6 +/- 2.4 yrs, mean(height)+/- SD = 1.4 +/- 0.2 m, mean(weigh)t +/- SD = 37.5 +/- 13.3 kg, mean(body-mass) (index)+/- SD = 17.6 +/- 3.1 kg/m(2), 44.4% girls) chosen from five schools in the city of Brno. Schoolbag weight and child's body weight were objectively measured by using digital scale. Relative schoolbag weight was calculated by dividing schoolbag weight with child's body weight and the result was expressed in percentage. Lambda, Mu and Sigma (LMS) method was used to create sex- and age-percentile curves. Boys carried slightly heavier schoolbag, compared with girls (mean difference 0.2 kg, p = 0.020). No significant differences between sexes in relative schoolbag weight were observed (p = 0.240). Median values (P50) for boys and girls were similar and the largest observed between ages 6-9 in boys (15-17%) and 6-8 in girls (16-18%). The percentage of children carrying relative schoolbag weight beyond 10% of their body weight was very high, especially between ages 6-10 in boys (85.1-100%) and 6-11 in girls (86.8-95.4%). This study provides first sex- and age- relative schoolbag weight normative values in primary school children. Future studies should use similar methods for generating comparable data.

Název v anglickém jazyce

Normative values for relative schoolbag weight in primary school children aged 6-14 from Czech Republic: A pilot study

Popis výsledku anglicky

Little evidence from observational studies has been provided regarding `optimal' relative schoolbag load during primary education. Also, no study to date has provided reference-based standards for relative schoolbag weight. Therefore, the main purpose of the study was to establish normative values of relative schoolbag weight in a sample of children. In this crosssectional study, we recruited 584 primary school students aged 6-14 (mean(age)+/- SD = 9.6 +/- 2.4 yrs, mean(height)+/- SD = 1.4 +/- 0.2 m, mean(weigh)t +/- SD = 37.5 +/- 13.3 kg, mean(body-mass) (index)+/- SD = 17.6 +/- 3.1 kg/m(2), 44.4% girls) chosen from five schools in the city of Brno. Schoolbag weight and child's body weight were objectively measured by using digital scale. Relative schoolbag weight was calculated by dividing schoolbag weight with child's body weight and the result was expressed in percentage. Lambda, Mu and Sigma (LMS) method was used to create sex- and age-percentile curves. Boys carried slightly heavier schoolbag, compared with girls (mean difference 0.2 kg, p = 0.020). No significant differences between sexes in relative schoolbag weight were observed (p = 0.240). Median values (P50) for boys and girls were similar and the largest observed between ages 6-9 in boys (15-17%) and 6-8 in girls (16-18%). The percentage of children carrying relative schoolbag weight beyond 10% of their body weight was very high, especially between ages 6-10 in boys (85.1-100%) and 6-11 in girls (86.8-95.4%). This study provides first sex- and age- relative schoolbag weight normative values in primary school children. Future studies should use similar methods for generating comparable data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30306 - Sport and fitness sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Plos one

ISSN

1932-6203

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000533891000044

EID výsledku v databázi Scopus

2-s2.0-85075514066