A Randomized Controlled Trial Comparing Whole Body Vibration Therapy With Usual Care and Usual Care to Improve Muscle Health in Older Adults

Background: The prevalence of Frailty and Sarcopenia is increasing with increasing proportion of older adults in the population. While screening for frailty and sarcopenia has become more common, frailty interventions are still developing. Effective interventions include resistance exercise programs that are progressive and sustained. However, take up rate and adherence to these programs are low due to many barriers like time, cost and convenience to the older adult. Many older adults who are frail may be unable to adhere to exercise programs due to cognitive impairment and tolerability. An alternative modality, Whole Body Vibration Training (WBVT), has emerged with evidence in improving muscle strength and function which may be easier to complete and a safe alternative.

Aim: Our study aims to evaluate the effectiveness of a novel progressive 4-week, thrice-weekly WBVT intervention and usual care compared to usual care in improving muscle mass, strength and function in the pre-frail and mildly frail older adult.

Methods: 20 participants would be randomly allocated to each arm. The primary outcome is the between-group difference in change in maximal isometric knee-extension strength from baseline to 2 weeks post-intervention. Secondary outcomes include Appendicular Skeletal Mass Index (ASMI), hand grip strength (HGS), gait speed (GS), 5 timed chair stands, Quality of life (EQ-5D-5L) and physical activity level using the Physical Activity Scale for the Elderly (PASE). Other secondary outcomes include falls rate during the study, 1-year unplanned emergency department visits, hospitalizations as well as all-cause mortality. The measurements would be done at 3 points, namely pre-intervention (baseline), 2 weeks post-intervention and at 3 months. Qualitative data would include participant surveys and semi-structured interviews to assess feasibility, accessibility and future implementation.