Daily Spousal Influence on Physical Activity in Knee Osteoarthritis

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ORIGINAL ARTICLE

Daily Spousal Influence on Physical Activity in Knee Osteoarthritis Lynn M. Martire, Ph.D. & Mary Ann Parris Stephens, Ph.D. & Jacqueline Mogle, Ph.D. & Richard Schulz, Ph.D. & Jennifer Brach, Ph.D. & Francis J. Keefe, Ph.D.

Published online: 17 November 2012 # The Society of Behavioral Medicine 2012

Abstract Background Physical activity is critical for the management of knee osteoarthritis, and the spouse may play a role in encouraging or discouraging physical activity. Purpose The purpose of this study was to examine four types of spousal influence—spouses’ daily activity, autonomy support, pressure, and persuasion—on the daily physical activity of adults living with knee osteoarthritis. Methods A total of 141 couples reported their daily experiences for 22 days using a handheld computer and wore an accelerometer to measure moderate activity and steps. Results Spouses’ autonomy support for patient physical activity, as well as their own level of activity, was concurrently associated with patients’ greater daily moderate activity and steps. In addition, on days when male patients L. M. Martire (*) Department of Human Development & Family Studies, Penn State University, 114-J Henderson North, University Park, PA 16802, USA e-mail: [email protected] M. A. P. Stephens Department of Psychology, Kent State University, Kent, OH, USA J. Mogle Center for Healthy Aging, Penn State University, University Park, PA, USA R. Schulz Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA J. Brach Department of Physical Therapy, University of Pittsburgh, Pittsburgh, PA, USA F. J. Keefe Department of Psychiatry, Duke University, Durham, NC, USA

perceived that spouses exerted more pressure to be active, they spent less time in moderate activity. Conclusions Couple-oriented interventions for knee osteoarthritis should target physical activity in both partners and spousal strategies for helping patients stay active. Keywords Couples . Physical activity . Daily diary . Arthritis . Autonomy support . Social control

Introduction Lack of physical activity influences the course and symptoms of many chronic health conditions, including knee osteoarthritis, whereas increased physical activity can aid in the management of these conditions [1]. It has been known for some time that family relationships have an impact on activity and exercise behavior [2, 3]. However, the specific ways in which family members negatively or positively influence patients’ daily levels of physical activity are unknown. In the present study, we examined how spouses’ autonomy support and social control (persuasion and pressure), as well as their own level of activity, are associated with the daily physical activity of adults living with knee osteoarthritis. We also examined gender differences in daily spousal influence on patient physical activity. Osteoarthritis is the most prevalent form of arthritis in the USA and causes significant activity limitations, resulting in billions of dollars of medical care expenditures and lost earning