scholarly journals Association between physical activity and scoliosis: a prospective cohort study

2018 ◽  
Vol 48 (4) ◽  
pp. 1152-1160 ◽  
Author(s):  
Jon H Tobias ◽  
Jeremy Fairbank ◽  
Ian Harding ◽  
Hilary J Taylor ◽  
Emma M Clark
Keyword(s):  
Physical Activity ◽  
Vigorous Physical Activity ◽  
Population Based ◽  
Population Based Study ◽  
Physical Ability ◽  
Parents And Children ◽  
Idiopathic Adolescent Scoliosis ◽  
Objectively Measured ◽  
Dxa Scans ◽  
Avon Longitudinal Study

Abstract Background Little is understood about the causes of adolescent onset idiopathic scoliosis (AIS). No prospective studies assessing the association between physical activity and idiopathic adolescent scoliosis have been carried out. We aimed to carry out the first prospective population-based study of this association. Methods The Avon Longitudinal Study of Parents and Children (ALSPAC) collected self-reported measures of physical ability/activity at ages 18 months and 10 years. Objective measures of physical activity were collected by accelerometry at age 11 years. scoliosis was identified using the dxa scoliosis Method at age 15 years. Participants with scoliosis at age 10 years were excluded. Results Of 4640 participants at age 15 years who had DXA scans, 267 (5.8%) had scoliosis. At age 18 months, those infants who were able to stand up without being supported were 66% less likely to have developed scoliosis by age 15 (P = 0.030) compared with infants who could not. Those children whose mothers reported they did most vigorous physical activity at age 10 years were 53% less likely to develop scoliosis (P = 0.027). Those children who did more objectively measured moderate/vigorous physical activity at age 11 were 30% less likely to have developed scoliosis (P < 0.001). Results were not affected by adjustment for age, gender, lean mass, fat mass or back pain. Conclusions We report reduced physical ability and activity as early as age 18 months in those who go on to develop scoliosis by age 15 years. Further research is justified to examine the mechanisms underlying this association.

scholarly journals Objectively measured physical activity, sedentary behaviour and all-cause mortality in older men: does volume of activity matter more than pattern of accumulation?

2018 ◽  
Vol 53 (16) ◽  
pp. 1013-1020 ◽  
Author(s):  
Barbara J Jefferis ◽  
Tessa J Parsons ◽  
Claudio Sartini ◽  
Sarah Ash ◽  
Lucy T Lennon ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sedentary Behaviour ◽  
Vigorous Physical Activity ◽  
Older Men ◽  
Population Based ◽  
Physical Activity Guidelines ◽  
All Cause Mortality ◽  
Sedentary Breaks ◽  
Objectively Measured

ObjectivesTo understand how device-measured sedentary behaviour and physical activity are related to all-cause mortality in older men, an age group with high levels of inactivity and sedentary behaviour.MethodsProspective population-based cohort study of men recruited from 24 UK General Practices in 1978–1980. In 2010–2012, 3137 surviving men were invited to a follow-up, 1655 (aged 71–92 years) agreed. Nurses measured height and weight, men completed health and demographic questionnaires and wore an ActiGraph GT3x accelerometer. All-cause mortality was collected through National Health Service central registers up to 1 June 2016.ResultsAfter median 5.0 years’ follow-up, 194 deaths occurred in 1181 men without pre-existing cardiovascular disease. For each additional 30 min in sedentary behaviour, or light physical activity (LIPA), or 10 min in moderate to vigorous physical activity (MVPA), HRs for mortality were 1.17 (95% CI 1.10 to 1.25), 0.83 (95% CI 0.77 to 0.90) and 0.90 (95% CI 0.84 to 0.96), respectively. Adjustments for confounders did not meaningfully change estimates. Only LIPA remained significant on mutual adjustment for all intensities. The HR for accumulating 150 min MVPA/week in sporadic minutes (achieved by 66% of men) was 0.59 (95% CI 0.43 to 0.81) and 0.58 (95% CI 0.33 to 1.00) for accumulating 150 min MVPA/week in bouts lasting ≥10 min (achieved by 16% of men). Sedentary breaks were not associated with mortality.ConclusionsIn older men, all activities (of light intensity upwards) were beneficial and accumulation of activity in bouts ≥10 min did not appear important beyond total volume of activity. Findings can inform physical activity guidelines for older adults.

scholarly journals Physical activity phenotyping with activity bigrams, and their association with BMI

2017 ◽  
Author(s):  
Louise AC Millard ◽  
Kate Tilling ◽  
Debbie A Lawlor ◽  
Peter A Flach ◽  
Tom R Gaunt
Keyword(s):  
Physical Activity ◽  
Vigorous Physical Activity ◽  
Activity Patterns ◽  
Moderate Activity ◽  
List Type ◽  
Activity Levels ◽  
Vigorous Activity ◽  
Parents And Children ◽  
Health Advice ◽  
Avon Longitudinal Study

ABSTRACTBackgroundAnalysis of physical activity usually focuses on a small number of summary statistics derived from accelerometer recordings: average counts per minute, and the proportion of time spent in moderate-vigorous physical activity or in sedentary behaviour. We show how bigrams, a concept from the field of text mining, can be used to describe how a person’s activity levels change across (brief) time points. These variables can, for instance, differentiate between two people with the same time in moderate activity, where one person often stays in moderate activity from one moment to the next and the other does not.MethodsWe use data on 4810 participants of the Avon Longitudinal Study of Parents and Children (ALSPAC). We generate a profile of bigram frequencies for each participant and test the association of each frequency with body mass index (BMI), as an exemplar.ResultsWe found several associations between changes in bigram frequencies and BMI. For instance, a 1 standard deviation decrease in the number of adjacent minutes in sedentary then moderate activity (or vice versa), with a corresponding increase in the number of adjacent minutes in moderate then vigorous activity (or vice versa), was associated with a 2.36 kg/m2 lower BMI [95% CI: -3.47, -1.26], after accounting for the time spent at sedentary, low, moderate and vigorous activity.ConclusionsActivity bigrams are novel variables that capture how a person’s activity changes from one moment to the next. These variables can be used to investigate how sequential activity patterns associate with other traits.Key MessagesEpidemiologists typically use only a small number of variables to analyse the association of physical activity with other traits, such as the average counts per minute and the proportion of time spent in moderate-vigorous physical activity or being sedentary.We demonstrate how activity bigrams can be used as a set of interpretable variables describing how a person’s activity levels change from one moment to the next.Testing the association of activity bigrams with exposures or outcomes can help us gain further understanding of how physical activity is associated with other traits; with further research they might provide evidence for more refined public health advice.

scholarly journals Joint associations between objectively measured physical activity volume and intensity with body-fatness. The Fenland Study

2021 ◽  
Author(s):  
Tim Lindsay ◽  
Katrien Wijndaele ◽  
Kate Westgate ◽  
Paddy Dempsey ◽  
Tessa Strain ◽  
...  
Keyword(s):  
Physical Activity ◽  
Vigorous Physical Activity ◽  
Large Population ◽  
Population Based ◽  
Fat Percentage ◽  
Body Fatness ◽  
Light Activity ◽  
Intense Activity ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity

AbstractBackground/ObjectivesPhysical activity energy expenditure (PAEE) represents the total volume of all physical activity. This can be accumulated as different underlying intensity profiles. Although volume and intensity have been studied in isolation, less is known about their joint association with health. We examined this association with body-fatness in a population-based sample of middle-aged British women and men.Methods6148 women and 5320 men from the Fenland study with objectively-measured physical activity from individually calibrated combined heart rate and movement sensing and DXA-derived body-fat percentage (BF%) were included in the analyses. We used linear and compositional isocaloric substitution analysis to examine associations of PAEE and its intensity composition with body-fatness. Sex-stratified models were adjusted for socio-economic and dietary covariates.ResultsPAEE was inversely associated with body-fatness in women (beta=-0.16 (95%CI: −0.17; −0.15) BF% per kJ·day-1·kg-1) and men (beta=−0.09 (95%CI: −0.10; −0.08) BF% per kJ·day-1·kg-1). Intensity composition was significantly associated with body-fatness, beyond that of PAEE; the reallocation of energy to vigorous physical activity (>6 METs) from other intensities was associated with less body-fatness, whereas light activity (1.5-3 METs) was positively associated. However, light activity was the main driver of overall PAEE volume, and the relative importance of intensity was marginal compared to that of volume; the difference between PAEE in tertile 1 and 2 in women was associated with 3 percentage-point lower BF%. Higher vigorous physical activity in the same group to the maximum observed value was associated with 1 percentage-point lower BF%.ConclusionsIn this large, population-based cohort study with objective measures, PAEE was inversely associated with body-fatness. Beyond the PAEE association, greater levels of intense activity were also associated with lower body-fatness. This contribution was marginal relative to PAEE. These findings support current guidelines for obesity prevention which emphasise moving more over the specific intensity or duration of that activity.

scholarly journals The Avon Longitudinal Study of Parents and Children (ALSPAC): an update on the enrolled sample of index children in 2019

2019 ◽  
Vol 4 ◽  
pp. 51 ◽  
Author(s):  
Kate Northstone ◽  
Melanie Lewcock ◽  
Alix Groom ◽  
Andy Boyd ◽  
John Macleod ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Health Service ◽  
Pregnant Women ◽  
Population Based ◽  
Sampling Frame ◽  
Population Based Study ◽  
Parents And Children ◽  
Health And Development ◽  
Avon Longitudinal Study ◽  
Baseline Sample

The Avon Longitudinal Study of Parents and Children (ALSPAC) is a prospective population-based study. Initial recruitment of pregnant women took place in 1990-1992 and the health and development of the index children from these pregnancies and their family members have been followed ever since. The eligible sampling frame was constructed retrospectively using linked recruitment and health service records. Additional offspring that were eligible to enrol in the study have been welcomed through major recruitment drives at the ages of 7 and 18 years; and through opportunistic contacts since the age of 7. This data note provides a status update on the recruitment of the index children since the age of 7 years with a focus on enrolment since the age of 18, which has not been previously described. A total of 913 additional G1 (the cohort of index children) participants have been enrolled in the study since the age of 7 years with 195 of these joining since the age of 18. This additional enrolment provides a baseline sample of 14,901 G1 participants who were alive at 1 year of age.

scholarly journals Objectively measured physical activity and kidney function in older men; a cross-sectional population-based study

2017 ◽  
Vol 46 (6) ◽  
pp. 1010-1014 ◽  
Author(s):  
Tessa J Parsons ◽  
Claudio Sartini ◽  
Sarah Ash ◽  
Lucy T Lennon ◽  
S Goya Wannamethee ◽  
...  
Keyword(s):  
Physical Activity ◽  
Kidney Function ◽  
Older Men ◽  
Population Based ◽  
Cross Sectional ◽  
Population Based Study ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity

Social Support and Leisure-Time Physical Activity Among the Elderly: A Population-Based Study

2016 ◽  
Vol 13 (6) ◽  
pp. 599-605 ◽  
Author(s):  
Andrea Wendt Böhm ◽  
Grégore Iven Mielke ◽  
Maurício Feijó da Cruz ◽  
Virgílio Viana Ramires ◽  
Fernando C. Wehrmeister
Keyword(s):  
Physical Activity ◽  
Social Support ◽  
Leisure Time ◽  
Leisure Time Physical Activity ◽  
Vigorous Physical Activity ◽  
Public Health Problem ◽  
The Elderly ◽  
Population Based ◽  
Elderly Persons ◽  
Population Based Study

Background:Physical inactivity in elderly is a public health problem. The purpose of this study is to describe and test the association between social support and leisure-time physical activity among the elderly.Methods:A cross-sectional, population-based study with 1,285 subjects (60+ years old) living in a city in southern Brazil was carried out in 2014. Physical activity practice was measured using the International Physical Activity Questionnaire [leisure domain: at least 150 minutes per week of walking + moderate physical activity + 2(vigorous physical activity)], while social support was measured using the Physical Activity Social Support Scale.Results:The prevalence of elderly who reached the recommendations of leisure-time physical activity was 18.4%. The elderly persons who had the company of family or friends to walk had a 2.45 times higher prevalence of reaching the recommendations of physical activity in leisure than those who did not. Those who had company of friends to practice moderate-to-vigorous physical activity (MVPA) were 3.23 times more likely to reach physical activity recommendations than their counterparts. The least common social support was the joint practice for walking and for MVPA.Conclusions:Strategies that incentivize family members and friends to provide social support to the elderly for physical activity focusing on joint practice must be encouraged.

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