An interventional study of Triplanar vibrating platform and Side-alternating vibrating platform in Bone Density, Muscles and Physical Functional Performance, sponsored by Universidade Estadual do Norte do Parana. Completed at 1 site in Brazil. Open to female participants aged 50 Years to 80 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-06-01.
Sponsored by Universidade Estadual do Norte do Parana · Not applicable, Interventional, and Prevention
Postmenopausal women suffer from a series of negative health factors, such as decreased bone and muscle mass and physical performance, increasing the risk of falls and decreasing quality of life. Therefore, intervention strategies aimed at mitigating these factors are essential. A technique that has been studied and can reverse these factors is whole-body vibration (WBV), however studies present contradictory results and the main confounding factor appears to be related to the type of vibration (synchronous or side-alternating). Therefore, the primary objective of this project is to verify the effects of 12 months of whole-body vibration on different devices on bone mineral density measurements in postmenopausal women. As a secondary objective, the effects on muscle mass, physical performance, quality of life and falls will be verified. 127 postmenopausal women will participate in the study and will be randomized to: triplanar vibration (synchronous); side-alternating vibration; or false vibration. The interventions will last 12 months and will occur three times a week on non-consecutive days. The following assessments will be carried out at baseline, 6-months and 12-months: bone mineral density and muscle mass by DXA equipment, muscle thickness by ultrasound, peak torque of the knee extensor and flexor muscles by an isokinetic dynamometer, hand grip, balance static postural and vertical jump on a force platform, dynamic balance using the Timed Up and Go test, SPPB battery, fear (FES-I) and incidence of falls and quality of life (SF-36).
Universidade Estadual do Norte do Parana is the lead sponsor of 11 studies on the registry; 2 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Triplanar vibration, performed at 25 Hz and 4 mm peak-to-peak displacement, for 5 minutes each session, three times a week. Participants will be positioned standing, with knees semi-flexed at 30º.
Device: Triplanar vibrating platform
Vibration with alternating side of the base, performed at 25 Hz and 4 mm peak-to-peak displacement, for 5 minutes each session, three times a week. Participants will be positioned standing, with knees semi-flexed at 30º.
Device: Side-alternating vibrating platform
Platform identical to the other two used by the experimental groups, configured at 25 Hz, however, without peak-to-peak displacement. The platform starts the engine and emits an operating sound identical to a vibrating platform in operation, but does not generate any mechanical vibration. Participants will be positioned standing, with knees semi-flexed at 30º and must remain on the equipment for 5 minutes each session, three times a week.
Other: Sham vibration
Mechanical vibration emitted by triplanar vibrating platforms
Mechanical vibration emitted by side-alternating vibrating platforms
Simulated vibration
Bone mineral density
Bone mineral density of the lumbar spine, total hip, femoral neck and trochanter assessed by DXA, expressed in g/cm2
Time frame: Baseline (pre-intervention), 6-months and 12-months
Appendicular skeletal muscle mass
Appendicular skeletal muscle mass assessed by DXA, expressed in kg/m2
Time frame: Baseline (pre-intervention), 6-months and 12-months
Muscle thickness
Thickness of the rectus femoris muscle assessed by ultrasound, expressed in cm
Time frame: Baseline (pre-intervention), 6-months and 12-months
Physical Performance
SPPB functional test battery composed of: static balance (feet together, semi-tandem, and full-tandem); gait speed test (4m); and 5-time sit-to-stand. All expressed in seconds.
Time frame: Baseline (pre-intervention), 6-months and 12-months
Dynamic balance
Timed Up and Go test: time taken to get up from a chair, walk three meters, return and sit down in the chair.
Time frame: Baseline (pre-intervention), 6-months and 12-months
Hand grip strength
Handgrip test using a Jamar hydraulic dynamometer, expressed in kg.
Time frame: Baseline (pre-intervention), 6-months and 12-months
Static postural balance anterior-posterior
Bipedal and semi-tandem postural balance test on a force platform to verify the antero-posterior displacement speed (cm/s).
Time frame: Baseline (pre-intervention), 6-months and 12-months
Static postural balance medial-lateral
Bipedal and semi-tandem postural balance test on a force platform to verify the medio-lateral displacement speed (cm/s).
Time frame: Baseline (pre-intervention), 6-months and 12-months
Static postural balance - area
Bipedal and semi-tandem postural balance test on a force platform to verify the COP area (cm2).
Time frame: Baseline (pre-intervention), 6-months and 12-months
Muscle power
Countermovement vertical jump with hands on waist to identify the power of the lower limbs expressed in watts.
Time frame: Baseline (pre-intervention), 6-months and 12-months
Lower limb muscle strength
Peak isokinetic torque (N.m) of the knee extensor and flexor muscles (concentric/concentric) evaluated by an isokinetic dynamometer at angular velocities of 60, 180 and 300º/s.
Time frame: Baseline (pre-intervention), 6-months and 12-months
Fear of falls
Fear of falls assessed by the falls efficacy scale-international (FES-I), which generates scores from 16 to 64 points.
Time frame: Baseline (pre-intervention), 6-months and 12-months
Health-related quality of life
The SF-36 questionnaire will be used, which generates scores of 0-100 points for eight domains of health-related quality of life.
Time frame: Baseline (pre-intervention), 6-months and 12-months
This study is completed, as verified in May 2026. You cannot join it, but the record below documents what was studied.
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Universidade Estadual do Norte do Parana