Relationships of physical activity and sedentary time in obese parent-child dyads: a cross-sectional study

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  • McMurray, Robert G.
    • Affiliation: College of Arts and Sciences, Department of Exercise and Sport Science
  • Berry, Diane
    • Affiliation: School of Nursing
  • Schwartz, Todd
    • Affiliation: Gillings School of Global Public Health, Department of Biostatistics
  • Hall, Emily G.
    • Affiliation: School of Nursing
  • Neal, Madeline N
    • Affiliation: School of Nursing
  • Li, Siying
    • Affiliation: Gillings School of Global Public Health, Department of Biostatistics
  • Lam, Diana
    • Affiliation: Gillings School of Global Public Health, Department of Biostatistics
Abstract
  • Abstract Background Research suggests physical activity is linked to obesity. Further, the physical activity of healthy parents and their children is associated with each other. However, this relationship has not been examined in obese parents and their obese children. Methods The purpose of this study was to compare the physical activity and sedentary time of obese, low-income, ethnic minority parents and their children on weekdays and weekend days using accelerometry. Data were obtained from eight rural sites in the middle and eastern part of North Carolina (N.C.), United States (U.S.) from 2007-2010 using a rolling enrollment. One hundred and ninety-nine obese parents (94 % female) and their obese children (54 % female) wore accelerometers simultaneously for three weekdays and one weekend day. Total physical activity, moderate-to-vigorous physical activity (MVPA) and sedentary time and proportions were determined. Results Parents’ and children’s total physical activity and MVPA levels were lower on weekend days than weekdays. Total counts per minute for children on weekdays and weekend days were greater than for parents (p < 0.001). Total counts per minute were more highly correlated on weekend days than weekdays (r = 0.352, p < 0.0002 versus r = 0.165, p < 0.025). Parents’ performed MVPA for 14 (SD = ±25) and 9 (SD = ±16) minutes/day on weekdays and weekend days, respectively; children performed MVPA for 37 (SD = ±25) and 31(SD = ±38) minutes/day for weekdays and weekend days, respectively. Correlations between parents and children for MVPA were higher on weekend days versus weekdays (r = 0.253 and 0.177, respectively; p < 0.015). Associations for sedentary time followed a similar trend, with r = 0.33 (p < 0.0002) for weekend days and r = 0.016 (p < 0.026) for weekdays. Associations between obese parent-child dyads on sedentary time were stronger for girls, while associations between dyads on MVPA were stronger for boys. However, formal interaction analyses were not significant (p > 0.13). Discussion Since physical activity levels of obese parents and their obese child are somewhat related, especially on weekend days, combined parent-child obesity programs focused on reducing sedentary time could be beneficial, particularly for the child. Conclusion In conclusion, this study of the physical activity levels of obese parents and their obese children found some relationships between the parents’ and children’s physical activity and sedentary behavior patterns, especially on weekend days. Trial registration NCT01378806 .
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  • Article
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  • In Copyright
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  • McMurray et al.
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  • English
Bibliographic citation
  • BMC Public Health. 2016 Feb 06;16(1):124
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  • BioMed Central

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