Cross-Sectional Associations of Objectively-Measured Physical Activity and Sedentary Time with Body Composition and Cardiorespiratory Fitness in Mid-Childhood: The PANIC Study

Background:Sex, age, body mass index (BMI), perceived health and health behavior are correlates known to affect physical activity and sedentary time. However, studies have often been cross-sectional, and less is known about long-term correlates. Thus, the aims were to investigate 1) the associations between a set of characteristics (demographic, biological, psychological, and behavioral) and objectively measured physical activity and sedentary time at 13-year follow-up, and 2) the association between changes in these characteristics over time and physical activity and sedentary time.Methods:Baseline characteristics were collected in 40-year-olds in 1996, and follow-up data on objectively measured physical activity and sedentary time were obtained in 2009 (n = 240). Data were analyzed by multiple linear regressions.Results:Self-reported physical activity (P < .001) and improved perceived health (P = .046) were positively associated with moderate-to-vigorous physical activity (MVPA) whereas BMI (P = .034) and increased BMI (P = .014) were negatively associated with MVPA at follow-up. Women spent less time being sedentary than men (P = .019). Education (P < .001) was positively associated and improved perceived health (P = .010) was negatively associated with sedentary time at follow-up.Conclusions:MVPA and sedentary time at follow-up were associated with behavioral, biological and demographic correlates. However, the nature of our analyses prevents us from inferring causality.

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OP38 Objectively measured physical activity and sedentary time: cross-sectional and prospective associations with adiposity in the Millennium Cohort Study

Journal of Epidemiology & Community Health ◽

10.1136/jech-2016-208064.38 ◽

2016 ◽

Vol 70 (Suppl 1) ◽

pp. A25.1-A25

Author(s):

LJ Griffiths ◽

F Sera ◽

M Cortina-Borja ◽

C Law ◽

A Ness ◽

...

Keyword(s):

Physical Activity ◽

Cohort Study ◽

Sedentary Time ◽

Millennium Cohort Study ◽

Cross Sectional ◽

Objectively Measured ◽

Objectively Measured Physical Activity

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Visual impairment and objectively measured physical activity and sedentary behaviour in US adolescents and adults: a cross-sectional study

BMJ Open ◽

10.1136/bmjopen-2018-027267 ◽

2019 ◽

Vol 9 (4) ◽

pp. e027267 ◽

Cited By ~ 4

Author(s):

Lee Smith ◽

Sarah E Jackson ◽

Shahina Pardhan ◽

Guillermo Felipe López-Sánchez ◽

Liang Hu ◽

...

Keyword(s):

Physical Activity ◽

Visual Impairment ◽

Sedentary Time ◽

Adult Women ◽

Normal Vision ◽

Cross Sectional ◽

Adolescents And Adults ◽

Objectively Measured ◽

Uncorrected Refractive Error ◽

Objectively Measured Physical Activity

ObjectivesTo compare levels of physical activity and sedentary time in a representative sample of US adolescents and adults with and without visual impairment.DesignCross-sectional analyses were carried out using data from the National Health and Nutrition Examination Survey.ParticipantsThe study population consisted of 6001 participants (adolescents n=1766, adults n=4235). The present analysis aggregated data from 2003 to 2004 and 2005–2006.MeasuresObjective physical activity and sedentary behaviour assessment was conducted over 7 days. Distance visual acuity was measured for each eye in all participants 12 years and older. Participants’ vision was categorised as: normal vision, uncorrected refractive error, non-refractive visual impairment. We estimated the sex-specific linear associations between presenting vision and objectively measured physical activity and sedentary patterns using adjusted generalised linear models in adolescents and adults.Results and conclusionsAdolescents with uncorrected refractive error and non-refractive visual impairment did not accumulate higher levels of sedentary time or lower levels of moderate-to-vigorous physical activity (MVPA) compared with those with normal vision. We observed no association between vision status and accelerometer measured MVPA in adults aged 20–49 years. We observed more time spent sedentary among females 20–49 years old with non-refractive visual impairment compared with those presenting normal vision (mean difference 329.8 min/week, 95% CI: 12.5 to 647.0). Adults 50 years and older with non-refractive visual impairment appeared to accumulate less lifestyle physical activity, particularly in women (mean difference −82.8 min/week, 95% CI: −147.8 to −17.8). Adult women with non-refractive visual impairment have lower levels of lifestyle physical activity and higher levels of sedentary time than those with normal vision. Taken together, these findings highlight the need for interventions to promote physical activity and reduce sedentary time in adult populations with visual impairment, specifically adult women.

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