Effects of Stochastic Whole-body Vibration Training on Balance and Executive Functions

Not Applicable

Completed

• Conditions: Healthy
• Interventions: Other: 5Hz Stochastic Resonance Whole-Body Vibration Training; Other: 2 Hz Stochastic Resonance Whole-Body Vibration Training

• Registration Number: NCT06629298
• Lead Sponsor: University of Bern

Brief Summary

Falls represent a significant financial burden, costing millions of dollars annually in Switzerland (SUVA, 2022). Good cognitive abilities and good balance represent modifiable protective factors against falls (Kurz, 2008). The present study investigates the impact of stochastic whole-body vibration training (SR-WBV) on executive functions and balance. To this end, participants were randomized into an intervention group or a control group. Participants in the intervention group underwent SR-WBV at a frequency of 5 Hertz (Hz), while participants in the control group underwent SR-WBV at 2 Hz. The training on an SRT Zeptor® Medical plus noise device consisted of three one-minute intervals of vibration, interspersed with one-minute rest periods. Data on executive functions (Updating, Shifting, Inhibition) and balance were collected before and after the intervention , complemented by subjective assessments of concentration and balance through questionnaires.

Detailed Description

Not available

Study Timeline

• Study Start: 2023-09-20
• Primary Completion: 2023-10-20
• Study Completion: 2023-10-20
• Status Verified: 2024-10
• Study First Submitted: 2024-10-03
• Study First Submitted QC: 2024-10-03
• Study First Posted: 2024-10-08
• Last Update Submitted: 2024-10-16
• Last Update Posted: 2024-10-18

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 62

Inclusion Criteria

• Healthy

Exclusion Criteria

• Pregnancy
• The presence of osteosynthetic materials (e.g., screws, plates, wires)
• Joint problems (particularly in the knees, hips, and back)
• Musculoskeletal issues
• Disc herniation
• Rheumatism
• Cardiovascular problems
• Balance disorders
• Red-green color blindness
• Intensive training within 24 hours prior to the assessment.
• Use of central nervous system medications

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Experimental Group	5Hz Stochastic Resonance Whole-Body Vibration Training	Three 1-minute sessions of stochastic whole-body vibration (SR-WBV) training with 1-minute breaks at 5 Hz
Control Group	2 Hz Stochastic Resonance Whole-Body Vibration Training	Three 1-minute sessions of stochastic whole-body vibration (SR-WBV) training with 1-minute breaks at 2 Hz

Primary Outcome Measures

Name	Time	Method
Sense of Balance (Change from Baseline)	19 min before and 19 min after the intervention (immediate effects)	Measured with subjective scale (sense of balance from 0 to 10); How do you assess your personal sensations regarding muscles and joints (back pain, shoulder and neck pain, leg muscle pain, etc.) at this moment?; Please slide the scale for each aspect to the most appropriate level.; 0 means no pain, and 10 means the most intense pain imaginable.
Balance (Change from Baseline)	Immediately before and 13 min after the intervention (immediate effects)	Measured with the modified star excursion balance test (m-SEBT). Higher values indicate better balance with 0cm being the minimum and ca. 100cm indicating very good balance, i.e. reach distance.; In this balance test, participants stand on one leg, while the range of motion of the other leg is measured in eight directions: anterior (ANT), posteromedial (PM), and posterolateral (PL).; (Duration: 5 min)

Secondary Outcome Measures

Name	Time	Method
Executive functions (Shifting) (Change from Baseline)	10 min before and 8 min after the intervention (immediate effects)	Measured with the Trail-Making Test B; For TMT B, participants were presented with circles filled with both numbers and letters. They were required to click the circles in ascending order, alternating between numbers and letters (e.g., 1, A, 2, B, 3, C). The practice task consisted of six circles, and the main test involved 24 circles. The processing time was measured in milliseconds.; Thus, higher scores in the Trail-Making Test B indicate lower shifting ability.; (Duration: 3 min)
Executive functions (Updating) (Change from Baseline)	18 min before and immediately after the intervention (immediate effects)	Measured with the Running Span-Task; Participants were presented with a series of letters of varying lengths (3 to 8 letters).; For each participant, both the total Running Span (sum of all correctly recalled target items) and the Running Span Score (sum of correctly recalled target items from sets that included at least one distractor) were calculated.; Thus, higher scores (MIN = 0) in the Running Span-Task indicate higher updating ability.; (Duration: 8 min)
Executive functions (Inhibition) (Change from Baseline)	7 min before and 11 min after the intervention (immediate effects)	Measured with the Stroop Test in milliseconds (Reaction Time); The reaction times (in milliseconds) for all correctly identified incongruent items were subtracted from those for control items.; 0 ms indicate no cognitive interference, i.e. maximal inhibitory control; Thus, higher scores in the Stroop Test indicate higher cognitive interference, i.e. poorer inhibitory control; (Duration: 2 min)

Trial Locations

Locations (1)

Institut für Psychologie, Arbeits- und Organisationspsychologie; 🇨🇭 Bern, Switzerland