Whole-body Vibration Training on the Elderly With Combined Bilateral Knee Osteoarthritis

Both groups received the intervention 3 times a week for 12 weeks. WBVT group. Each intervention lasted 30 min, which included 5 min of warm-up, 20 min of vibration training, and 5 min of relaxation.

• Whole-body vibration training (Other): Whole-body vibration therapy stimulates muscle contraction. It can increase muscle function to a level like that of classical resistance training, but with the advantage of being more convenient and safer

Primary outcomes

• Physical performance [8 weeks]: These are standardized tests used to assess lower limb strength, mobility, and overall functional ability in elderly patients it includes: 1. Gait speed (it is the rate a person can tolerate walking measured in meter per seconds (ask the person to walk at their usual comfortable pace for 10 meters; and record how many seconds it takes to complete this distance and evaluate the recorded time before and after the treatment); 2. 5-time chair stand test; t evaluates how quickly a participant can perform 5 successive sit-to-stand without using their arms (it evaluate the time taken to complete 5 repetitions, a. ≤ 12 seconds is considered normal physical performance, b. > 15 seconds may indicate lower extremity weakness, mobility limitations, or increased fall risk, c. Unable to complete indicates significant functional impairment). All measurements will be carried out before the treatment and after the end of the treatment.

Sex: All, ages: 60 Years to 75 Years

Inclusion Criteria:

* Patients with KOA were graded based on the Kellgren-Lawrence grading criteria (K-L grading)
* only grades 3 and 4 will be included in this study
* Sarcopenia obesity based on with SMI with SMI < 7 kg/m2
* PBF ≥ 30% into the SO group
* BMI ≥ 28%, or waist circumference ≥ 85 cm in men and ≥ 80 cm in women
* able to communicate

Exclusion Criteria:

* Inability to walk
* Knee joint underwent drug treatment or intra-articular injection
* Uncontrollable angina pectoris induced by exercise
* Uncontrolled hypertension, acute or chronic renal failure, or dyspnea in the resting state
* Neurological or respiratory conditions or injuries (ie, dementia, Alzheimer's disease, multiple sclerosis, chronic obstructive pulmonary disease), rheumatoid arthritis and clinical depression.