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Physical activity in overweight and obese adults with schizophrenia and schizoaffective disorders

Janney, Carol/A (2012) Physical activity in overweight and obese adults with schizophrenia and schizoaffective disorders. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Objectives: Provide a comprehensive profile of physical activity in overweight and obese adults with schizophrenia or schizoaffective disorders (SZO/SA), and compare physical activity levels measured objectively with accelerometry in overweight and obese adults with SZO/SA with users of mental health services (NHANES 2003-2004).
Design: Randomized clinical trial; Weight Assessment and Intervention in Schizophrenia Treatment (WAIST) Study: baseline data collected 2005-2008.
Setting: University of Pittsburgh Medical Center, Pittsburgh, PA, USA
Participants: Community-dwelling adults diagnosed with SZO/SA, experiencing mild psychiatric symptoms (PANSS<90), interested in losing weight, age 18-70 years, BMI>27 kg/m2.
Measurements: Self-reported physical activity questionnaire, objectively measured physical activity (accelerometry), and physical fitness.
Results: Household activities were the primary source of activity (women 474, men 284 mins/wk, p<0.001). Walking for transportation or leisure was reported by 64% (n=163) of participants. Occupational activities were limited due to low employment rate (~15%). Other than household activities, no differences in subjective physical activity were noted by gender, race, or age groups. On average, 81%, 17%, and 2% of the participant’s monitoring time was classified as sedentary, light, and moderate-vigorous activity, respectively, using accelerometry. Total (mins/day and counts/min) and light activity (mins/day) but not moderate-vigorous activity (mins/day) were significantly greater in users of mental health services than adults with SZO/SA (p<0.01). Only 2 of 105 were classified as fit. No association was observed between objective and subjective physical activity and physical fitness. Subjective physical activity was associated with function and general health status but not psychiatric symptoms.
Conclusion: Overweight and obese adults with SZO/SA were extremely sedentary; unfit; engaged in unstructured, intermittent, low-intensity physical activity; less active than users of mental health services. Physical activities were generally limited to walking for transportation or leisure, and household activities.
Public Health Significance: These findings provide the first quantitative and comprehensive profile of physical activity in adults with SZO/SA. This extremely sedentary lifestyle is alarming, significantly lower than other inactive US populations, costly for the individual and community, and warrants immediate action. Interventions should focus on decreasing sedentary time in addition to promoting all aspects of physical activity in overweight and obese adults with SZO/SA.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Janney, Carol/
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairKriska, Andrea/MKriskaA@edc.pitt.eduAKY
Committee MemberCauley, Jane/AJCauley@edc.pitt.eduJCAULEY
Committee MemberTang, Gongtang@nsabp.pitt.eduGOT1
Committee MemberGanguli,
Date: 3 July 2012
Date Type: Completion
Defense Date: 2 April 2012
Approval Date: 3 July 2012
Submission Date: 5 April 2012
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 257
Institution: University of Pittsburgh
Schools and Programs: School of Public Health > Epidemiology
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: schizophrenia physical activity accelerometry MAQ mental health NHANES 2003-2004 schizoaffective disorder users of mental health services
Date Deposited: 03 Jul 2012 14:15
Last Modified: 15 Nov 2016 13:57

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