Facilitating physical activity and reducing symptoms in patients with knee osteoarthritis: study protocol of a randomized controlled trial to test a theory-based PrevOP-psychological adherence program (PrevOP-PAP)

Nina Knoll , Diana Hilda Hohl , Susannah Motter , Jan Keller , Daniela Lange , Dieter Felsenberg , Peter Martus , Wolfgang Ertel , Ralf Schwarzer


Background: The present randomized controlled trial, which is crossed with the “PREVenting the impairment of primary Osteoarthritis by high impact long-term Physical exercise regimen” Main Medical Trial (PrevOP-MMT), aims to evaluate a psychological adherence program (PrevOP-PAP), and is designed to support persons with knee osteoarthritis (OAK) in the uptake and maintenance of regular physical activity to reduce OAK symptoms. The PrevOP-PAP is based on the Health Action Process Approach (HAPA), a social-cognitive theory predicting health behavior change in individuals, extended here by social network characteristics and social exchange processes. It is expected that participants with OAK receiving the PrevOP-PAP will maintain higher levels of regular physical activity throughout a 24-month period and consequently report lower levels of OAK symptoms than participants of an active control condition. Methods: A total of N = 240 participants with medically verified moderate OAK will be randomly assigned to an intervention condition (PrevOP-PAP-I; 50%) or an active control condition (PrevOP-PAP-CTRL). The PrevOP-PAP-I includes a motivational intervention, repeated self-regulation interventions, and a network creation intervention delivered over 12 months. Modes of intervention delivery include a paper-pencil motivation leaflet with a quiz, a computer-assisted face-to-face intervention, four computer assisted phone-based interventions, and activity calendars. The PrevOP-PAP-CTRL includes the motivational intervention only. Primary outcome will be OAK symptoms. Secondary outcomes include objectively and subjectively measured physical activity and indicators of quality of life. Other outcomes are HAPA-derived self-regulatory indicators as well as proposed social network and social exchange mechanisms of health behavior change. Assessments take place at baseline, 6 months, 12 months, 18 months, and 24 months following baseline. Discussion: Based on the extended HAPA, this study seeks to reveal the self-regulatory and social mechanisms of the uptake and maintenance of physical activity and their relation to disease symptoms in persons with OAK. The design and evaluation of this program are intended to become a yardstick for future development and implementation of digitalized psychological adherence programs in this population.
Author Nina Knoll
Nina Knoll,,
, Diana Hilda Hohl
Diana Hilda Hohl,,
, Susannah Motter
Susannah Motter,,
, Jan Keller
Jan Keller,,
, Daniela Lange
Daniela Lange,,
, Dieter Felsenberg
Dieter Felsenberg,,
, Peter Martus
Peter Martus,,
, Wolfgang Ertel
Wolfgang Ertel,,
, Ralf Schwarzer (Filia we Wrocławiu / II Wydział Psychologii we Wrocławiu)
Ralf Schwarzer,,
- II Wydział Psychologii we Wrocławiu
Journal seriesBMC Musculoskeletal Disorders, ISSN 1471-2474, (A 30 pkt)
Issue year2018
Publication size in sheets0.75
Keywords in EnglishKnee osteoarthritis, Physical activity, Osteoarthritis symptoms, Planning, Action control, Social network, Social support, Social control, HAPA, RCT
ASJC Classification2732 Orthopedics and Sports Medicine; 2745 Rheumatology
URL https://doi.org/10.1186/s12891-018-2158-8
Languageen angielski
Facilitating physical activity_tekst.pdf 1,002.5 KB
Additional file
Oświadczenia_Schwarzer.pdf 252.44 KB
Score (nominal)30
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.086; WoS Impact Factor: 2017 = 1.998 (2) - 2017=2.454 (5)
Citation count*5 (2021-02-25)
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