scholarly journals Cross-sectional associations of objectively assessed sleep duration with physical activity, BMI and television viewing in German primary school children

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Susanne Kobel ◽  
Olivia Wartha ◽  
Jens Dreyhaupt ◽  
Sarah Kettner ◽  
Jürgen M. Steinacker
2020 ◽  
Author(s):  
Mary Vincent Mosha ◽  
Elizabeth Kasagama ◽  
Philip Ayieko ◽  
Jim Todd ◽  
Sia Msuya ◽  
...  

Abstract Background: Insufficient physical activity is a serious public health concern. Assessing physical activity accurately in children remains a challenge and valid tools for its assessment in African children are needed. This study compares self-reports versus accelerometry-captured physical activity.Methods: In this cross-sectional study, 51 primary school children aged 9 – 11 years from four primary schools in Kilimanjaro region were enrolled. Children were asked to complete a self-reported questionnaire on physical activity and wore an accelerometer for seven consecutive days. Accelerometry was used as a reference method to assess for child reporting accuracy.Results: Spearman correlation between self-reports and accelerometry was moderate (r=0.41, p=0.002). Children who reported walking to school had higher moderate to vigorous physical activity (MVPA) for both accelerometry and self- reports compared to their counterparts (p < 0.001). Intra-class correlation (ICC) showed that 32% of the variations in accelerometry weekly total MVPA was contributed by the differences in activities between children.Conclusions: Objective measures of physical activity such as accelerometers can be used to accurately measure physical activity in children where feasible. Self-reports have limited validity, and therefore more research is needed to develop better self-reported measures with specific activities which can easily be recalled by children.


Author(s):  
Agata Korcz ◽  
Jana Krzysztoszek ◽  
Marlena Łopatka ◽  
Mateusz Ludwiczak ◽  
Paulina Górska ◽  
...  

Family time may have an influence on children’s physical activity (PA) participation or may contribute to increased sedentary behaviour. The aim of this paper was to examine whether spending family time is associated with the PA of children aged 10–11. Cross-sectional data on 158 primary school children (80 girls and 78 boys) with a mean age of 10.6 ± 0.49 years were collected. Weight and height were used to calculate body mass index. The level of moderate-to-vigorous physical activity (MVPA) was determined with a physical activity screening measure. Participants wore a Vivofit® wrist band activity tracker to measure their daily number of steps. The Health Behaviour in School-Aged Children questionnaire was used to obtain information from children about the frequency of activities undertaken by the family. Analyses entailed descriptive statistics of the total sample and by gender, t-test, and the Mann–Whitney U-test to examine the gender differences and Spearman’s correlation coefficients. It was found that 32.3% of the children did not accomplish at least 60 min per day on ≥5 of the seven days and more than 75.9% of them did not accumulate at least 12,000 or more steps daily. More boys than girls tended to be sufficiently active and met the guideline of at least 60 min per day on ≥5 of the seven days (70.5% and 65.0%, respectively) or 12,000 steps per day (25.8% and 10.0%, respectively). The number of steps during the weekday was significantly and inversely associated both in girls and in boys with active family time (r = −0.27 and r = −0.25, respectively), and with total family time (r = −0.28) and non-active family time (r = −0.25) only in boys. Average MVPA was also inversely correlated with active family time (r = −0.31), non-active family time (r = −0.24), and total family time (r = −0.29) in boys. The correlation effect size values ranged between small to medium significant differences for these measures. The findings underscore the need for community-based PA programmes designed for whole families to meet the recommended PA of children and also to develop and promote active leisure activities among families.


2021 ◽  
Vol 3 ◽  
pp. 40
Author(s):  
Mary Vincent Mosha ◽  
Elizabeth Kasagama ◽  
Philip Ayieko ◽  
Jim Todd ◽  
Sia E. Msuya ◽  
...  

Background: Self-reports are commonly used to assess physical activity in children. Existing self-reports for physical activity have not been validated for use among primary school children in, Tanzania. In order to understand if primary school children can accurately report their physical activity, we examined the validity of self-reported physical activity against accelerometer measured physical activity. Methods: A community based cross-sectional study was conducted from May to July, 2018. Four primary schools were conveniently selected in Moshi municipal and Moshi rural districts in Kilimanjaro, Tanzania and from these 51 children aged 9 – 11 years were randomly selected. Self-reported questionnaire was used to collect physical activity related variables. In addition, children wore accelerometers for seven consecutive days to capture physical activity movements. Spearman’s rank test and Bland Altman plots were used for assessing validity and agreement between self-reports and accelerometer moderate to vigorous physical activity (MVPA). Results: The mean age of the study participants was 10 (SD=0.8) years and 32 (63%) were girls. A positive significant correlation was found between self-reports and accelerometer MVPA (rho=0.36, p=0.009). Accelerometer had higher mean MVPA 408 (SD = 66) compared to self-reports 261 (SD = 179). Children who reported walking to school had higher MVPA for both accelerometer and self- reports compared to children who use other means of transport to school, e.g. school buses (p < 0.001). Conclusions: This study found a positive significant correlation between self-reports and accelerometers. Self-reports are prone to errors due to recall bias, and this interferes their validity. More research is needed to develop better self-reported measures with specific activities which can easily be recalled by children. Also, researchers have to be aware of self-reports validity limitation.


2021 ◽  
Vol 11 (01) ◽  
pp. e28-e34
Author(s):  
Kevin B. Edem ◽  
Enobong E. Ikpeme ◽  
Mkpouto U. Akpan

AbstractSurveillance of the carrier state for β-hemolytic streptococcal (BHS) throat infections remains essential for disease control. Recent published works from Sub-Saharan Africa have suggested a changing epidemiology in the burden of BHS throat infections. The objective of the present study was therefore to determine the prevalence and pattern of BHS throat carriage in school-aged children in Uyo, Akwa Ibom State. This was a prospective cross-sectional study of 276 primary school children in Uyo. Subjects were recruited by multistage random sampling. Obtained throat swabs were cultured on 5% sheep blood agar. Lancefield grouping on positive cultures was done by using the Oxoid Streptococcal Grouping Latex Agglutination Kit, United Kingdom. Antimicrobial susceptibility testing was done with the disk diffusion method. Associations were tested with Fischer's exact test. The prevalence of BHS carriage was 3.3%. Group C Streptococcus was identified in 89% of isolates and Group G Streptococcus in 11%. Younger age and larger household size were associated with asymptomatic streptococcal throat infections. Antimicrobial susceptibility was highest with cefuroxime and clindamycin (89% of isolates each), while 78% of isolates were susceptible to penicillin. None of the tested isolates was susceptible to co-trimoxazole. The prevalence of streptococcal throat carriage in the study area was low. There were no Group A Streptococcus isolates suggesting an evolving epidemiology of BHS disease in the study area.


Children ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 223
Author(s):  
Wajiha Anzar ◽  
Ambrina Qureshi ◽  
Ashar Afaq ◽  
Hiba F. Kattan ◽  
Basil Almutairi ◽  
...  

Aim: This study aimed to investigate an association between dental caries status and anthropometric measures in primary school children. Methods and Materials: An analytical cross-sectional study (n = 376) was conducted among primary school children (age range = 6–9 years) registered in private schools. Non-clinical data was gathered from parents of participating children through a self-administered structured questionnaire as well as from the children through an interviewer-administered questionnaire. Clinical data included the examination of dental caries using dmft/DMFT index and anthropometric measures including calculated z-scores of height-for-age (HAZ), weight-for-age (WAZ), BMI-for-age (BAZ), and physical examination. Inferential statistics included Kruskal Wallis and linear regression for univariate and multivariate analysis respectively. Results: The proportion of dental caries in primary and secondary dentition was 67.6% and 8.2% respectively. A significant association was observed between dental caries status and HAZ, WAZ, and BAZ (p < 0.001). An inverse relation was found between low, medium, and high dental caries categories and anthropometric measures. Conclusions: In the primary dentition, dental caries were significantly and inversely related to weight-for-age, height-for-age, and BMI-for-age. Hence, it can be concluded that among the low-income population dental caries is associated with lower anthropometric outcomes in children and therefore caries management should be considered an approach impacting overall health and quality of life.


2016 ◽  
Vol 44 (2) ◽  
pp. 297-328 ◽  
Author(s):  
JULIA KNOEPKE ◽  
TOBIAS RICHTER ◽  
MAJ-BRITT ISBERNER ◽  
JOHANNES NAUMANN ◽  
YVONNE NEEB ◽  
...  

AbstractEstablishing local coherence relations is central to text comprehension. Positive-causal coherence relations link a cause and its consequence, whereas negative-causal coherence relations add a contrastive meaning (negation) to the causal link. According to the cumulative cognitive complexity approach, negative-causal coherence relations are cognitively more complex than positive-causal ones. Therefore, they require greater cognitive effort during text comprehension and are acquired later in language development. The present cross-sectional study tested these predictions for German primary school children from Grades 1 to 4 and adults in reading and listening comprehension. Accuracy data in a semantic verification task support the predictions of the cumulative cognitive complexity approach. Negative-causal coherence relations are cognitively more demanding than positive-causal ones. Moreover, our findings indicate that children's comprehension of negative-causal coherence relations continues to develop throughout the course of primary school. Findings are discussed with respect to the generalizability of the cumulative cognitive complexity approach to German.


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