The PLE(2)NO self-management and exercise program for knee osteoarthritis: Study Protocol for a Randomized Controlled Trial
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Updated: Mar 19, 2026

The Lower Body Positive Pressure Treadmill for Knee Osteoarthritis Rehabilitation
Published on: July 22, 2019
Priscila Marconcin1,2, Margarida Espanha3, Flávia Yázigi4
1Universidade de Lisboa, Faculdade de Motricidade Humana, CIPER, LBMF, P-1499-002, Estrada da Costa, 1499-002 Cruz Quebrada, Dafundo, Portugal. pri_edf@hotmail.com.
Background:
International recommendations suggest exercise and self-management programs, including non-pharmacological treatments, for knee osteoarthritis (KOA) because they can benefit pain relief and improve function and exercise adherence. The implementation of a combined self-management and exercise program termed PLE(2)NO may be a good method for controlling KOA symptoms because it encourages the development of self-efficacy to manage the pathology. This study will assess the effects of a self-management and exercise program in comparison to an educational intervention (control program) on symptoms, physical fitness, health-related quality of life, self-management behaviors, self-efficacy, physical activity level and coping strategies.
Methods/Design:
This PLE(2)NO study is a single-blinded, randomized controlled trial of elderly (aged above 60 yrs old) patients with clinical and radiographic KOA. The patients will be allocated into either an educational group (control) or a self-management and exercise group (experimental). All participants will receive a supplement of chondroitin and glucosamine sulfates. This paper describes the protocol that will be used in the PLE(2)NO program.
Discussion:
This program has several strengths. First, it involves a combination of self-management and exercise approaches, is available in close proximity to the patients and occurs over a short period of time. The latter two characteristics are crucial for maintaining participant adherence. Exercise components will be implemented using low-cost resources that permit their widespread application. Moreover, the program will provide guidance regarding the effectiveness of using a self-management and exercise program to control KOA symptoms and improve self-efficacy and health-related quality of life.
Trial Registration:
NCT02562833 (09/23/2015).
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