Comparative Effect of Dual Task Training and Rhythmic Stabilization in Knee Osteoarthritis Patients

Participants will receive dual-task training involving simultaneous performance of motor and cognitive tasks alongside conventional physiotherapy. The intervention will include functional activities such as walking, standing, and sit-to-stand while performing cognitive tasks, including counting backward, verbal fluency, or responding to simple questions. Task difficulty will be progressively increased according to participants' abilities and tolerance to improve balance, functional mobility, and cognitive-motor coordination.

Participants will receive dual-task training involving simultaneous performance of motor and cognitive tasks alongside conventional physiotherapy. The intervention will include functional activities such as walking, standing, and sit-to-stand while performing cognitive tasks, including counting backward, verbal fluency, or responding to simple questions. Task difficulty will be progressively increased according to participants' abilities and tolerance to improve balance, functional mobility, and cognitive-motor coordination. The intervention will be performed three times per week for six weeks.

Participants will receive rhythmic stabilization based on proprioceptive neuromuscular facilitation (PNF) principles, targeting the knee joint in supine, sitting, and standing positions. The technique involves applying alternating manual resistance in multiple directions while participants maintain isometric contractions without allowing joint movement. Participants will be instructed to resist the therapist's forces to facilitate muscle co-contraction, improve knee stability, neuromuscular control, and balance.

Participants will receive rhythmic stabilization based on proprioceptive neuromuscular facilitation (PNF) principles, targeting the knee joint in supine, sitting, and standing positions. The technique involves applying alternating manual resistance in multiple directions while participants maintain isometric contractions without allowing joint movement. Participants will be instructed to resist the therapist's forces to facilitate muscle co-contraction, improve knee stability, neuromuscular control, and balance. The intervention will be performed three times per week for six weeks, alongside conventional physiotherapy.

11-point numeric with 0 representing No pain, 1-3 representing Mild Pain (nagging, annoying, interfering little with ADLs), 4-6 representing Moderate Pains (interferes significantly with ADLs), 7-10 representing Sever Pain (disabling, unable to perform ADL

The Berg Balance Scale (BBS) will be used to assess functional balance in patients with knee osteoarthritis. It is a standardized 14-item scale that evaluates balance during daily functional activities such as sitting, standing, turning, reaching, transferring, and single-leg standing. Each item is scored on a 4-point Likert scale, with a total score ranging from 0 to 56, where higher scores indicate better balance performance. Scores of 0-20 indicate high fall risk, 21-40 indicate moderate fall risk, and scores ≥41 indicate low fall risk. The BBS is a highly reliable and valid tool for assessing balance in individuals with knee OA

Joint Position Error (JPSE) will be assessed using Smartphone Inclinometer to evaluate proprioception. The participant's limb will be passively positioned at a target angle (e.g., 30° knee flexion) with eyes closed, and then returned to the starting position. The participant will then actively reproduce the same angle, and the smartphone Inclinometer will record the difference between the target and reproduced angle. This difference, measured in degrees, represents the JPSE. Smaller error values indicate better proprioceptive accuracy and joint position sense.

The WOMAC is a valid, reliable, and widely used disease-specific outcome measure for assessing pain, stiffness, and physical function in individuals with knee osteoarthritis. It comprises 24 items divided into three subscales: pain (5 items), stiffness (2 items), and physical function (17 items). Each item is rated on a 5-point Likert scale ranging from 0 (none) to 4 (extreme). The total score is calculated by summing the responses, with higher scores indicating greater pain, stiffness, and functional impairment