Correlates of objectively assessed physical activity and sedentary time in children: a cross-sectional study (The European Youth Heart Study)

Nilsson, Andreas; Andersen, Lars Bo; Ommundsen, Yngvar; Fröberg, Karsten; Sardinha, Luís B.; Piehl-Aulin, Karin; Ekelund, Ulf

doi:10.1186/1471-2458-9-322

Cited by 89 publications

(83 citation statements)

References 37 publications

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“…One is that fitness may be a confounder in the association between body fat tissue and vitamin D (20) . Fitness may also be associated with vitamin D concentrations because greater fitness is likely linked to increased outdoor activities (38) and thus exposure to sunlight (6) , as predicted in the present study. It should however also be mentioned that girls (12-14 years) with low s-25(OH)D have been shown to generate less power, jump less height and have lower velocity than girls with higher s-25(OH)D concentrations, measured as the 'Esslinger Fitness Index' which represents efficiency and asymmetry of movement and maximum voluntary force of each leg (39) , suggesting that a lower CRF as a consequence of lower 25(OH)D could be one potential explanation for the positive association between CRF and 25(OH)D. Several studies worldwide have reported higher vitamin D status in boys compared with girls, although the reason is unclear (6)(7)(8) , but these studies were only examining vitamin D status, irrespective of intake.…”

Section: Discussionsupporting

confidence: 56%

Insufficient autumn vitamin D intake and low vitamin D status in 7-year-old Icelandic children

Bjarnadottir

Kristjansdottir

Hrafnkelsson

et al. 2014

Public Health Nutr.

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Objective: The aim was to investigate autumn vitamin D intake and status in 7-year-old Icelanders, fitting BMI and cardiorespiratory fitness as predictors. Design: Three-day food records and fasting blood samples were collected evenly from September to November, and cardiorespiratory fitness was measured with an ergometer bike. Conclusions: A minority of children followed the vitamin D recommendations and 65 % had suboptimal vitamin D status during the autumn. Week of autumn was more strongly associated with vitamin D status than diet or cardiorespiratory fitness, which associated with vitamin D status to a similar extent. These results demonstrate the importance of sunlight exposure during summer to prevent suboptimal vitamin D status in young schoolchildren during autumn in northern countries. An increased effort is needed for enabling adherence to the vitamin D recommendations and increasing outdoor activities for sunlight exposure.

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Section: Discussionsupporting

confidence: 56%

Insufficient autumn vitamin D intake and low vitamin D status in 7-year-old Icelandic children

Bjarnadottir

Kristjansdottir

Hrafnkelsson

et al. 2014

Public Health Nutr.

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“…Previous studies have shown that school-based PA interventions increased students' PA participation during school days (Kriemler et al, 2010;Loucaides, Jago, & Charalambous, 2009;Tammelin, Laine, & Turpeinen, 2013) out-ofschool (Lytle et al, 2009; Nemet et al, 2005;Nilsson et al, 2009), physical capacity (Sollerhed & Ejlertsson, 2008;Kalaja, 2012), active commuting to school (Tammelin, Laine, & Turpeinen, 2013), total daily PA (de Bourdeaudhuij et al, 2010;Harrison et al, 2006;Jurg et al, 2006;McManus et al, 2008;Metcalf et al, 2012;Schneider, Dunton, & Cooper, 2008;Pate et al, 2005), perceived PA effort in PE , and positive attitudes toward physical activities (Christodoulos et al, 2006;. For instance, in a school-based PA program involving a sample of 498 Grade 1 and 5 children in Switzerland, in-school MVPA increased from 38 minutes to 45 minutes per day, while out-of-school activity decreased from 67 minutes to 61 minutes per day during one school year.…”

Section: School-based Physical Activity Interventionsmentioning

confidence: 99%

Effectiveness of School‐Initiated Physical Activity Program on Secondary School Students' Physical Activity Participation

Gråstén

Yli-Piipari

Watt

et al. 2015

Journal of School Health

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Gråstén, Arto Students' physical activity, physical education enjoyment, and motivational determinants through a three-year school-initiated program Jyväskylä: University of Jyväskylä, 2014, 12 p. (+ included articles) (Studies in Sport, Physical Education, and Health ISSN 0356-1070; 205) ISBN 978-951-39-5713-1 (nid.) ISBN 978-951-39-5714-8 (PDF) Finnish abstract Diss.Patterns of physical activity in adulthood are often established during adolescence, making this an important period for promoting physical activity. To address this, the Sotkamo Physical Activity as Civil Skill Program 2010-2014 was implemented to increase Grade 5 to 9 students' physical activity on a daily basis. The purpose of this study was to examine the effects of program on students' physical activity and enjoyment. Furthermore, the relationship between motivational climate and enjoyment, and the percentages of students who engaged in 60 minutes of moderate to vigorous physical activity on the daily basis were examined.The study comprised 847 students (422 girls, 425 boys) at the age of 12 to 14 years from two school districts, North-East and Central Finland. The program was conducted across three school years including four measurement phases. The dependent variables were self-reported and objectively measured physical activity, and physical education enjoyment. Motivational climate, goal orientation, perceived physical competence, intrinsic and extrinsic motivation, expectancy beliefs, subjective task values, and out-of-school physical activity were independent variables. Background variables were gender, grade, duration of treatments, and school district.The program including task-involving climate and physical school environment treatment was effective in order to prohibit declining levels of students' physical activity. Students' enjoyment sustained at the same level across the program. Physically active secondary school students valued physical education classes more important than less active students. Furthermore, secondary school boys engaged in more moderate to vigorous physical activity in physical education than girls. In contrast, girls were involved in more out-of-school activity than boys. The major cause of concern arising from the current findings was that girls engaged in up to 26.2% and boys 33.6% of their weekly moderate to vigorous physical activity during only two 45-minute physical education classes. The program increased the proportion of physically active students, the latest measurement revealed that 24% of girls and 33% of boys met the current guidelines.Taken together, increased opportunities for school day physical activities have the potential to affect large number of students and are an efficient strategy for promoting regular physical activity. A better understanding of the role of motivational climate may assist efforts to promote children's and adolescents' perceived physical competence, intrinsic motivation, and enjoyment in the school physical education setting.Keywords: physical activity, enjoyme...

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“…The total number of counts per minute (cnts min −1 ) and the number of minutes spent in moderate-to-vigorous physical activity (MVPA) were derived. MVPA was defined as all activities with intensity over 2000 cnts min −1 , a threshold frequently used and equivalent to an energy expenditure of ≥3 METs (Hansen et al 2012;Nilsson et al 2009). …”

Section: Assessment Of Physical Activitymentioning

confidence: 99%

The influence of systemic inflammation on skeletal muscle in physically active elderly women

Wåhlin-Larsson

Carnac

Kadi

2014

AGE

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The biological mechanisms responsible for the decline in skeletal muscle mass during aging remain unknown. It is hypothesized that elevations in the level of the acute phase C-reactive protein (CRP) negatively affect skeletal muscle mass in elderly. We examined the relationship between serum CRP and muscle mass in a population of active elderly women (65-70 years; n =23). Though all subjects were physically active, serum CRP levels were negatively associated to the amount of time spent in moderate-to-vigorous physical activity (R(2) = 0.20, P = 0.032) and to skeletal muscle mass (R(2) = 0.28, P = 0.009). We further aimed to determine the potential mechanisms behind the action of systemic inflammation on skeletal muscle by exposing myoblasts isolated from vastus lateralis to the different sera from each elderly woman. The doubling time (DT) of myoblasts increased when cells were exposed to sera with high CRP levels (R(2) = 0.27, P = 0.011), indicating that CRP contributes to the impairment of the proliferative rate of myoblasts in elderly. In order to further confirm our findings, we incubated human myoblasts in exogenous CRP. Exposition to exogenous CRP induced an increase in myoblast DT by 1.21-fold (P = 0.007) and a reduction in the expression of the proliferation marker ki-67 confirming the negative influence of CRP on myoblast proliferative rate. Collectively, these findings highlight the contribution of the systemic inflammatory status in the age-related decline in skeletal muscle function.

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Correlates of objectively assessed physical activity and sedentary time in children: a cross-sectional study (The European Youth Heart Study)

Cited by 89 publications

References 37 publications

Insufficient autumn vitamin D intake and low vitamin D status in 7-year-old Icelandic children

Insufficient autumn vitamin D intake and low vitamin D status in 7-year-old Icelandic children

Effectiveness of School‐Initiated Physical Activity Program on Secondary School Students' Physical Activity Participation

The influence of systemic inflammation on skeletal muscle in physically active elderly women

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