- BMI Body Mass Index, EARS Exercise Adherence Rating Scale, NRS numeric rating scale, WOMAC The Western Ontario and McMaster Universities Osteoarthritis Index, KOOS Knee Osteoarthritis Outcome Score, ADL Activity of Daily Living, AQoL2 Assessment of Quality of Life Instrument, PASE Physical Activity scale for the elderly, ASE Arthritis Self Efficacy scale, SEE Self- efficacy for exercise scale, SMS Short Message Service