Knee osteoarthritis (OA) is a debilitating disease affecting millions worldwide. Exercise is a core treatment for knee OA, and is advocated by all clinical guidelines. Running is a common exercise that is accessible and evokes a number of positive physical and psychological benefits. However, the appropriateness of recreational running in the presence of knee OA is unclear. A growing literature base appears to suggest that running may not be deleterious to the health - especially at the knee joint - of people with knee OA. Our recent research has focused on examining a number of health outcomes relevant to knee OA in older individuals with knee OA, but has been limited to experienced runners. This study will address that limitation by focusing on how novice (new) runners respond to a new running program.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Enrollment
80
Participants will receive a 6-month running program focusing on gradual increases in weekly running volume (no more than 5% per week, on average). For the purpose of this study, there will be no specific instructions on 'how' to run; rather, participants will simply be instructed on 'how much' to run.
Motion Analysis and Biofeedback Laboratory, The University of British Columbia
Vancouver, British Columbia, Canada
T2 relaxation time - medial tibia
Magnetic resonance imaging (MRI) of the knee cartilage will be used to measure the exponential decay/dephasing of transverse magnetization of protons, known as T2 relaxation time (measured in milliseconds). Cartilage will be segmented into a number of regions of interest, with relaxation times calculated separately for each region of interest.
Time frame: Baseline and 6 months
T2 relaxation time - medial femur
Magnetic resonance imaging (MRI) of the knee cartilage will be used to measure the exponential decay/dephasing of transverse magnetization of protons, known as T2 relaxation time (measured in milliseconds). Cartilage will be segmented into a number of regions of interest, with relaxation times calculated separately for each region of interest.
Time frame: Baseline and 6 months
T2 relaxation time - patella
Magnetic resonance imaging (MRI) of the knee cartilage will be used to measure the exponential decay/dephasing of transverse magnetization of protons, known as T2 relaxation time (measured in milliseconds). Cartilage will be segmented into a number of regions of interest, with relaxation times calculated separately for each region of interest.
Time frame: Baseline and 6 months
T1rho relaxation time - medial tibia
Magnetic resonance imaging (MRI) of the knee cartilage will be used to assess the interaction between water and macromolecules. T1rho relaxation time (measured in milliseconds) measures how fast water protons spin-locked to macromolecules leave this locked state. Cartilage will be segmented into a number of regions of interest, with relaxation times calculated separately for each region of interest.
Time frame: Baseline and 6 months
T1rho relaxation time - medial femur
Magnetic resonance imaging (MRI) of the knee cartilage will be used to assess the interaction between water and macromolecules. T1rho relaxation time (measured in milliseconds) measures how fast water protons spin-locked to macromolecules leave this locked state. Cartilage will be segmented into a number of regions of interest, with relaxation times calculated separately for each region of interest.
Time frame: Baseline and 6 months
T1rho relaxation time - patella
Magnetic resonance imaging (MRI) of the knee cartilage will be used to assess the interaction between water and macromolecules. T1rho relaxation time (measured in milliseconds) measures how fast water protons spin-locked to macromolecules leave this locked state. Cartilage will be segmented into a number of regions of interest, with relaxation times calculated separately for each region of interest.
Time frame: Baseline and 6 months
Knee Injury and Osteoarthritis Outcome Score (KOOS) - pain subscale
There are 9 questions in this subscale, with each question scored on a 5-point Likert scale ranging from "None" to "Extreme". The total sum of this subscale is calculated and divided by the maximum score to generate a score out of 100. Subscale totals range from 0 to 100, with higher scores indicating less pain.
Time frame: Baseline and 6 months
Knee Injury and Osteoarthritis Outcome Score (KOOS) - function in daily living subscale
There are 17 questions in this subscale, with each question scored on a 5-point Likert scale ranging from "None" to "Extreme". The total sum of this subscale is calculated and divided by the maximum score to generate a score out of 100. Subscale totals range from 0 to 100, with higher scores indicating less pain.
Time frame: Baseline and 6 months
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