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    Seasonal variation in household, occupational, and leisure time physical activity: longitudinal analyses from the seasonal variation of blood cholesterol study

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    Authors
    Matthews, Charles E.
    Freedson, Patty S.
    Hebert, James R.
    Stanek, Edward J.
    Merriam, Philip A.
    Rosal, Milagros C.
    Ebbeling, Cara B.
    Ockene, Ira S.
    UMass Chan Affiliations
    Department of Medicine, Division of Cardiovascular Medicine
    Department of Medicine, Division of Preventive and Behavioral Medicine
    Document Type
    Journal Article
    Publication Date
    2001-02-13
    Keywords
    Adult
    Age Factors
    Analysis of Variance
    Body Mass Index
    Cholesterol
    Energy Metabolism
    Exercise
    *Family Characteristics
    Female
    Follow-Up Studies
    Humans
    *Leisure Activities
    Male
    Massachusetts
    Middle Aged
    Models, Statistical
    Obesity
    Occupations
    *Seasons
    Sex Factors
    Time Factors
    exercise
    monitoring
    physiologic
    physical fitness
    seasons
    work
    CI
    confidence interval
    MET(s)
    metabolic equivalent(s)
    SEASON
    Seasonal Variation of Blood Cholesterol Study
    Cardiology
    Cardiovascular Diseases
    Environmental Public Health
    Lipids
    Musculoskeletal, Neural, and Ocular Physiology
    Polycyclic Compounds
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    Link to Full Text
    https://doi.org/10.1093/aje/153.2.172
    Abstract
    The authors examined seasonal variation in physical activity in longitudinal analyses of 580 healthy adults from Worcester, Massachusetts (the Seasonal Variation of Blood Cholesterol Study, 1994-1998). Three 24-hour physical activity recalls administered five times during 12 months of follow-up were used to estimate household, occupational, leisure time, and total physical activity levels in metabolic equivalent (MET)-hours/day. Trigonometric models were used to estimate the peak-to-trough amplitude and phase of the peaks in activity during the year. Total activity increased by 1.4 MET-hours/day (121 kcal/day) in men and 1.0 MET-hours/day (70 kcal/day) in women during the summer in comparison with winter. Moderate intensity nonoccupational activity increased by 2.0-2.4 MET-hours/day in the summer. During the summer, objectively measured mean physical activity increased by 51 minutes/day (95% confidence interval: 20, 82) in men and by 16 minutes/day (95% confidence interval: -12, 45) in women. The authors observed complex patterns of seasonal change that varied in amplitude and phase by type and intensity of activity and by subject characteristics (i.e., age, obesity, and exercise). These findings have important implications for clinical research studies examining the health effects of physical activity and for health promotion efforts designed to increase population levels of physical activity.
    Source

    Am J Epidemiol. 2001 Jan 15;153(2):172-83.

    DOI
    10.1093/aje/153.2.172
    Permanent Link to this Item
    http://hdl.handle.net/20.500.14038/26393
    PubMed ID
    11159163
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    ae974a485f413a2113503eed53cd6c53
    10.1093/aje/153.2.172
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