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Self-reported and objectively measured sedentary behavior in bariatric surgery candidates
Dale S Bond1, J Graham Thomas, Jessica L Unick
1Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, The Miriam Hospital/Weight Control and Diabetes Research Center, Providence, Rhode Island 02903, USA. dbond@lifespan.org
Bariatric surgery candidates spend most sedentary time watching TV. While questionnaires and objective measures agree on group sedentary time, individual estimates vary, highlighting TV viewing as a target for reducing sedentary behavior.
Area of Science:
- Obesity research
- Behavioral medicine
- Public health
Background:
- Sedentary behavior (SB) is a significant health risk, independent of physical activity.
- Bariatric surgery candidates exhibit high overall SB.
- Subjective reports can detail specific SB types and complement objective measures.
Purpose of the Study:
- Examine self-reported time spent on specific SB types in bariatric surgery candidates.
- Assess discrepancies between self-reported and objectively measured total sedentary time.
Main Methods:
- 52 bariatric surgery candidates completed the Sedentary Behavior Questionnaire (SBQ).
- Objective SB data collected using the SenseWear Armband (SWA).
- Paired t tests and ICC analyzed measurement agreement.
Main Results:
- Television viewing was the most frequent SB (2.7 hrs/day), followed by computer work (1.9 hrs/day).
- Group-level estimates of total sedentary time were similar between SBQ and SWA (approx. 9.5 hrs/day).
- Individual-level agreement between SBQ and SWA was poor (ICC = .22).
Conclusions:
- Television viewing is a key modifiable target for reducing SB in this population.
- SBQ and SWA are suitable for describing group-level SB in bariatric candidates.
- Individual sedentary time estimates from SBQ and SWA are not interchangeable.
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