Prehabilitation Physical Activity in Persons With Osteoarthritis

University of Tartu45 enrolled

Overview

Knee joint osteoarthritis (OA) reduces functional mobility and performance of daily tasks such as rising from a chair. Therefore interventions aimed at improving muscle strength and sit-to-stand task performance are very important for these patients. The effect of exercise programs, including home exercise programs (HEP), on muscle strength, joint pain and function is well known and widely researched, yet not many studies have investigated the effect of an HEP on electromyographic activity (EMG) of muscles when performing everyday tasks, such as rising from and sitting on a chair. The aim of this study was to investigate effect of prehabilitation in women with severe knee joint OA scheduled for knee joint arthroplasty (TKA).

Study Type

INTERVENTIONAL

Allocation

Purpose

PREVENTION

Masking

NONE

Enrollment

Conditions

Osteoarthritis

Interventions

Participants of experimental group performs daily an 8-week home therapeutical exercise program. Exercises are periodized by weeks (1-8 weeks). The aim of program is the leg muscle strengthening using an elastic band (Thera-Band, System of Progressive Exercise, USA), body balance training, and leg muscle stretching.

Eligibility

Sex: FEMALEMin age: 50 YearsMax age: 70 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * For OA patients: patients with severe knee joint OA undergoing unilateral total knee arthroplasty (TKA) * for controls: pain of joints more than 20/100 mm by VAS Exclusion Criteria: For both groups: * previous total joint arthroplasty of lower limbs * other musculoskeletal, neurological and cardiovascular diseases * any diseases affecting balance and coordination.

Outcomes

Primary Outcomes

Muscle electromyographic (EMG) activity

Electromyographic (EMG) activity of thigh muscles during gait and sit to stand task (amplitude, mV)

Time frame: up to 12 months

Secondary Outcomes

Knee joint pain intensity

Self-reported knee joint pain intensity measured by visual-analogue scale (VAS) (in mm: "0 mm" - no pain and "100 mm" - extreme pain)

Time frame: up to 12 months

Knee joint function

Self-reported functional status measured by Knee Injury and Osteoarthritis Outcome Score (KOOS) - Symptoms, Pain, Daily Living Activity, Sport and Recreational Activity. Quality of Life. Maximum is 100 points (complains are absent) and minimum is 0 points (extreme complains)

Time frame: up to 12 months

Sit to Stand test

five time Sit to Stand test from standard chair (s)

Time frame: up to 12 months

Mobility test

Timed Up and Go test, 3-m plus return 3-m walking test (s)

Time frame: up to 12 months

Leg muscles strength

strength of leg extensor muscles (N)

Time frame: up to 12 months

Body balance

Body postural sway measuring during standing using Kistler force plate (Switzerland) (mm), eyes open and eyes closed

Time frame: up to 12 months

Gait pattern

Gait kinematic characteristics measurement using three-dimensional movement analysis system and six optoelectronic cameras (BTS S.p.A. Italy) - joint angles (degrees)

Time frame: up to 12 months