Charles E Matthews1, Susan A Carlson2, Pedro F Saint-Maurice1, Shreya Patel1, Elizabeth A Salerno, Erikka Loftfield1, Richard P Troiano3, Janet E Fulton4, Joshua N Sampson5, Calvin Tribby6, Sarah K Keadle7, David Berrigan8. 1. Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD. 2. Division of Population Health, Centers for Disease Control and Prevention, Atlanta, GA. 3. Risk Factor Assessment Branch, Division of Cancer Control and Population Sciences, National Cancer Institute, Rockville, MD. 4. Division of Nutrition, Physical Activity, and Obesity, Centers for Disease Control, Atlanta, GA. 5. Biostatistics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD. 6. Department of Geography, University of Hong Kong, Hong Kong, China. 7. Department of Kinesiology, California Polytechnic State University, San Luis Obispo, CA. 8. Health Behaviors Research Branch, Division of Cancer Control and Population Sciences, National Cancer Institute, Rockville, MD.
Abstract
PURPOSE: Higher levels of sedentary behavior are associated with early mortality, but the distribution of sedentary time by classes of behavior and demographic groups is poorly described in U.S. adults. To quantify the amount and sources of sedentary time in U.S. adults, we conducted a nationwide survey using a novel validated self-administered previous-day recall method and compared these values with a commonly used sitting time question. METHODS: Participants from the AmeriSpeak panel 20 to 75 yr of age (N = 2640) completed up to two activities completed over time in 24 h (ACT24) previous-day recalls. Recalls were conducted on randomly selected days in October and November 2019. Survey sample designs were applied to reflect the U.S. population. RESULTS: Mean age was 45.3 yr, 51% were female, 67% non-Hispanic White, and 37% had a body mass index of ≥30 kg·m-2. U.S. adults reported a mean 9.5 h·d-1 of sedentary time (95% confidence interval = 9.4, 9.7 h·d-1), which was 34% more than reported using a common surveillance measure (P < 0.01). Most daily sedentary time was accumulated in the leisure and work life domains, with leisure accounting for 47% (4.3 h·d-1, 95% confidence interval = 4.2, 4.5 h·d-1) of the total sedentary time. Eighty-two percent of leisure time was spent sedentary, mainly watching television/videos or engaged in Internet/computer use. CONCLUSIONS: U.S. adults appear to spend more time in sedentary behavior than previously thought, and the majority of this time is accumulated at work and in leisure time. Reducing sedentary screen time during leisure in favor of physically active could be an important intervention target in the effort to increase physical activity in U.S. adults.
PURPOSE: Higher levels of sedentary behavior are associated with early mortality, but the distribution of sedentary time by classes of behavior and demographic groups is poorly described in U.S. adults. To quantify the amount and sources of sedentary time in U.S. adults, we conducted a nationwide survey using a novel validated self-administered previous-day recall method and compared these values with a commonly used sitting time question. METHODS: Participants from the AmeriSpeak panel 20 to 75 yr of age (N = 2640) completed up to two activities completed over time in 24 h (ACT24) previous-day recalls. Recalls were conducted on randomly selected days in October and November 2019. Survey sample designs were applied to reflect the U.S. population. RESULTS: Mean age was 45.3 yr, 51% were female, 67% non-Hispanic White, and 37% had a body mass index of ≥30 kg·m-2. U.S. adults reported a mean 9.5 h·d-1 of sedentary time (95% confidence interval = 9.4, 9.7 h·d-1), which was 34% more than reported using a common surveillance measure (P < 0.01). Most daily sedentary time was accumulated in the leisure and work life domains, with leisure accounting for 47% (4.3 h·d-1, 95% confidence interval = 4.2, 4.5 h·d-1) of the total sedentary time. Eighty-two percent of leisure time was spent sedentary, mainly watching television/videos or engaged in Internet/computer use. CONCLUSIONS: U.S. adults appear to spend more time in sedentary behavior than previously thought, and the majority of this time is accumulated at work and in leisure time. Reducing sedentary screen time during leisure in favor of physically active could be an important intervention target in the effort to increase physical activity in U.S. adults.
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Authors: C E Matthews; P S Freedson; J R Hebert; E J Stanek; P A Merriam; M C Rosal; C B Ebbeling; I S Ockene Journal: Am J Epidemiol Date: 2001-01-15 Impact factor: 4.897
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Authors: Charles E Matthews; Pedro Saint-Maurice; Janet E Fulton; Shreya Patel; Erikka Loftfield; Joshua N Sampson; Sarah K Keadle; David Berrigan Journal: PLoS One Date: 2022-09-09 Impact factor: 3.752
Authors: Shuyuan Huang; Garrett I Ash; Soohyun Nam; Sangchoon Jeon; Erin McMahon; Robin Whittemore Journal: Int J Environ Res Public Health Date: 2022-09-10 Impact factor: 4.614
Authors: Christine M Friedenreich; Jeff K Vallance; Margaret L McNeely; S Nicole Culos-Reed; Charles E Matthews; Gordon J Bell; John R Mackey; Karen A Kopciuk; Leanne Dickau; Qinggang Wang; Diane Cook; Stephanie Wharton; Jessica McNeil; Charlotte Ryder-Burbidge; Andria R Morielli; Kerry S Courneya Journal: Cancer Causes Control Date: 2022-01-22 Impact factor: 2.506
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