| 1. |
- Fröberg, Andreas, 1985-, et al.
(författare)
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Accelerometer-measured pattern of sedentary time and physical activity among adolescents in a multicultural area characterized by low socioeconomic status
- 2018
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Ingår i: International Journal of Adolescent Medicine and Health. - : Walter de Gruyter. - 0334-0139 .- 2191-0278. ; 30:3
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE:The aim of this cross-sectional study was to describe and analyze accelerometer-measured sedentary time and physical activity (PA) among adolescents in a multicultural area characterized by low socioeconomic status (SES).METHOD:Seventh-graders (n=114 (girls n=66), mean age: 12.8±0.8 y) were recruited from three schools in a multicultural area of the city of Gothenburg, Sweden. Sedentary time and PA were measured with ActiGraph™ accelerometers.RESULT:Of total wear-time, 70 (±6)% was sedentary, with girls being more sedentary than boys. Girls had less light PA (LPA) and moderate-to-vigorous PA (MVPA) than boys. Similar patterns were shown during in-school and out-of-school hours. During wear-time, 53% had a mean of ≥60 min of MVPA per day, but only 6% of the girls and 24% of the boys were sufficiently physically active every day. Girls had more sedentary bouts of ≥10 min and fewer MVPA bouts of ≥5 min per day than boys. Those who participated in organized sports spent a mean of 15 more minutes of MVPA per day compared to those who did not. No association was observed between body mass index (BMI) and sedentary time and PA.CONCLUSION:Only a few adolescents from a Swedish multicultural area characterized by low SES met the PA recommendations every day, and girls were more sedentary and less physically active than boys. Adolescents involved in organized sports had more of MVPA per day than their non-involved peers. Sedentary time and PA were not related to BMI.
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| 2. |
- Fröberg, Andreas, 1985, et al.
(författare)
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Awareness of current recommendations and guidlines regarding strength training for youth
- 2014
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Ingår i: International Journal of Adolescent Medicine and Health. - : Walter de Gruyter GmbH. - 0334-0139 .- 2191-0278. ; 26:4, s. 517-523
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Tidskriftsartikel (refereegranskat)abstract
- Aim: Physical conditioning of youth has always been a controversial topic as it raises ethical, physiological, and medical issues. Current recommendations and guidelines suggest that strength training is a relatively safe and worthwhile method in conditioning youth. This, however, requires well-informed coaches who follow age-appropriate strength training recommendations and guidelines, compiles well-designed strength training programs, and provides qualified supervision and instructions. The purpose of this study was to investigate coaches’ awareness of current recommendations and guidelines regarding strength training for youth.Method: A total of 39 football (US: soccer) coaches (34 males and 5 females) training boys in age groups 8–12 years were included in this study. Data were collected using an attitude statement questionnaire, and the assertions were based upon current recommendations and guidelines.Results: The results revealed significant differences among coaches in terms of knowledge of important aspects of strength training for youth.Conclusions: The results suggested that coaches in the present study were not aware of the latest recommendations and guidelines regarding strength training for youth.
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| 3. |
- Fröberg, Andreas, 1985, et al.
(författare)
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Combinations of Epoch Durations and Cut-Points to Estimate Sedentary Time and Physical Activity Among Adolescents
- 2017
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Ingår i: Measurement in Physical Education and Exercise Science. - : Taylor & Francis. - 1091-367X .- 1532-7841. ; 21:3, s. 154-160
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of the current study was to investigate how combinations of different epoch durations and cut-points affect the estimations of sedentary time and physical activity in adolescents. Accelerometer data from 101 adolescents were derived and 30 combinations were used to estimate sedentary time, light, moderate, vigorous, and combined moderate-to-vigorous physical activity. Data were analyzed with repeated measurement analyses of variance. Large differences of sedentary time and times of different physical activity intensities were observed between 1 s and longer epoch durations using virtually all cut-points. Generally, sedentary time, moderate physical activity, vigorous physical activity, and combined moderate-to-vigorous physical activity progressively decreased, whereas light physical activity increased with longer epoch durations. The extreme differences between cut-points were large and increased with longer epoch durations for sedentary time and for all physical activity intensities except for vigorous physical activity per epoch duration. Caution is required when cross-comparing studies using different epoch durations and cut-points. To accurately register adolescents’ spontaneous intermittent physical activity behavior, short epoch durations are recommended.
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| 4. |
- Fröberg, Andreas, 1985, et al.
(författare)
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Effects of an Empowerment-Based Health-Promotion School Intervention on Physical Activity and Sedentary Time among Adolescents in a Multicultural Area
- 2018
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Ingår i: International Journal of Environmental Research and Public Health. - Basel : MDPI. - 1661-7827 .- 1660-4601. ; 15:11
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Tidskriftsartikel (refereegranskat)abstract
- Physical activity (PA) decreases with age, and interventions are needed to promote PA during adolescence, especially, among those in low-socioeconomic status (SES) areas. The aim of this study was to investigate whether a two-year, empowerment-based health-promotion school intervention had any effects on changes in (a) moderate-to-vigorous PA (MVPA), (b) sedentary time (SED), (c) exercise training (ET) frequency, and (d) ET duration, among adolescents. Participants (aged 12-13 years at baseline) from one intervention school and two control schools, were recruited from a multicultural area of Sweden, characterized by low-SES. During the course of the two-year intervention, a total of 135 participants (43% boys) were included in the study. The intervention was developed and implemented as a result of cooperation and shared decision-making among the researchers and the participants. MVPA and SED were measured with accelerometers, and ET frequency and duration was self-reported at the beginning of the seventh, eighth, and ninth grade, respectively. There were no significant effects of the two-year, empowerment-based health-promotion school intervention on changes in the accelerometer-measured MVPA and SED, or the self-reported ET frequency and duration, among the adolescents. Overall, the intervention was unsuccessful at promoting PA and reducing SED. Several possible explanations for the intervention's lack of effects are discussed.
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| 5. |
- Fröberg, Andreas, 1985-, et al.
(författare)
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Klena bevis för att stillasittande ger kardiometabol ohälsa hos unga : »Skräpmat« och sena kvällar framför skärmen del i komplext samband
- 2015
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Ingår i: Läkartidningen. - 0023-7205 .- 1652-7518. ; 112
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Tidskriftsartikel (refereegranskat)abstract
- Skolbarn och skolungdomar sitter upp till 9 timmar per dag, och stillasittandet ökar med ca 30 minuter per år under uppväxten.Det finns svagt vetenskapligt stöd för samband mellan stillasittande och övervikt/fetma och andra markörer för kardiometabol ohälsa (t ex förhöjt blodtryck och höga koncentrationer av blodfetter) hos barn och ungdomar. Det finns stöd för samband mellan barns och ungdomars skärmtid och kardiometabol ohälsa, främst gäller detta övervikt/fetma.Sambandet mellan skärmtid och övervikt/fetma är komplext men kan möjligen förklaras av att barn tenderar att konsumera »skräpmat« framför tv-apparaten.Sammantaget är de vetenskapliga bevisen av låg kvalitet, och slutsatserna bör tolkas med försiktighet.
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| 6. |
- Fröberg, Andreas, 1985, et al.
(författare)
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Levels of Physical Activity during Physical Education lessons in Sweden
- 2017
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Ingår i: Acta Paediatrica. - : Wiley-Blackwell. - 0803-5253 .- 1651-2227. ; 106:1, s. 135-141
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Tidskriftsartikel (refereegranskat)abstract
- AIM:The aim of this study was to measure the percentage of sedentary light and moderate-to-vigorous physical activity (%MVPA) provided by physical education (PE) lessons for Swedish second, fifth and eighth grade students, aged eight, 11 and 14.METHODS:We observed 39 PE lessons and divided them into seven lesson categories: ball play, ball games, dance, fitness, playing games, orienteering and gymnastics. Physical activity (PA) during PE was estimated using accelerometers and the height and weight of the children were measured.RESULTS:We studied 149 children: 63 in the second grade, 66 in the fifth grade and 19 in the eighth grade. On average, 25% of the PE lessons were spent in MVPA and the mean %MVPA varied with the lesson content, with fitness, orienteering and playing games being the most intense. The highest %MVPA was in the fitness category, providing 33% (8-62%) for girls and 37% (7-72%) for boys. With the exception of the second grade, no significant gender differences in %MVPA were seen.CONCLUSION:The content of Swedish PE lessons affected the %MVPA in all age groups. In some content, individuals reached two-thirds of their daily PA recommendations, highlighting the potential that PE contributes to public health goals.
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| 7. |
- Fröberg, Andreas, 1985-, et al.
(författare)
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Metoder för att minska vuxnas stillasittande
- 2017
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Ingår i: Fysioterapi. - 1653-5804. ; :2, s. 28-34
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Forskningsöversikt (övrigt vetenskapligt/konstnärligt)abstract
- I takt med den växande kunskapen om stillasittandets potentiella negativa hälsokonsekvenser har flera studier publicerats där forskare utvärderat effekten av interventioner som syftar till att minska stillasittande. Denna artikel sammanfattar forskningsläget kring detta och ger exempel på de metoder som har använts och utvärderats. Resultatet visar att metoder som innebär rekonstruktion av miljö som bland annat höj- och sänkbara arbetsbord och självregleringstekniker som monitorering med stegräkning har varit framgångsrika metoder för att minska stillasittande. Även metoder där problemlösning och tillhandahållande av information ingått har visat sig användbara. Förslag ges på hur fysioterapeuter kan gå till väga vid målformulering samt -utvärdering av insatser för att minska vuxnas stillasittande.
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| 8. |
- Fröberg, Andreas, 1985, et al.
(författare)
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Objectively measured sedentary behaviour and cardio-metabolic risk in youth: a review of evidence
- 2014
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Ingår i: European Journal of Pediatrics. - : Springer Science and Business Media LLC. - 0340-6199 .- 1432-1076. ; 173:7, s. 845-860
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this paper was to review studies that examine the association between volume and pattern of objectively measured sedentary behaviour and markers of cardio-metabolic risk in youth. A search for relevant articles was conducted in PubMed and SportDiscus, and the following inclusion criteria were applied: (i) youth participants (age range 6-19); (ii) accelerometer-measured volume and/or pattern of sedentary behaviour and its association with a parts per thousand yen1 cardio-metabolic outcome; and (iii) published, in press or accepted in an English language peer-reviewed journal between January 2000 and October 2013. A total of 45 articles met the a priori criteria and, thus, were considered eligible for inclusion. Although youth accumulate approximately 6 to 8 hof daily sedentary behaviour, little evidence supports an association with individual and clustered cardio-metabolic risk when adjusted for moderate-to-vigorous physical activity (MVPA). Conclusion: We suggest that youth should be encouraged to engage in recommended levels of MVPA and reduce excessive time spent in screen-based sedentary behaviour. Future studies should examine the association between volume and pattern of objectively measured sedentarybehaviour and cardio-metabolic risk independent of time spent in MVPA.
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| 9. |
- Fröberg, Andreas, 1985-, et al.
(författare)
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Samband mellan stillasittande och ohälsa varierar med mätmetod
- 2016
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Ingår i: Läkartidningen. - 0023-7205 .- 1652-7518. ; 133
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Tidskriftsartikel (refereegranskat)abstract
- The objective of this study was to overview high-qualitative systematic reviews to synthesize the evidence for associations between sedentary behavior and health outcomes in adults. There is evidence for a cross-sectional association between accelerometer measured sedentary time and poorer insulin sensitivity, and an association between sedentary breaks and BMI/waist circumference and triglycerides. Based on intervention studies (only randomized cross-over), there is evidence for an association between prolonged sitting and some markers for poorer cardiovascular health, but it is unclear whether this may be generalized to adults in general. There is also evidence to support an association between self-reported sedentary behavior (e.g., screen-time and total sitting time) and cardiovascular disease incidence and death, cancer incidence and death, and all-cause mortality. The inconsistent use of sedentary measures suggests, however, that caution is required when interpreting the results.
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| 10. |
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