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CompletedNCT04784741Updated Mar 5, 2021

Effect of Low Amplitude Vibration Therapy on Flexibility of Hamstring Muscle in Athletes of Pakistan

An interventional study of Conventional static hamstring muscle stretching and Low amplitude whole body vibration therapy in Hamstring Contractures and Whole Body Vibration, sponsored by Shifa Clinical Research Center. Completed at 1 site in Pakistan. Open to participants aged 18 Years to 30 Years. Per ClinicalTrials.gov, last updated 2021-03-05.

Sponsored by Shifa Clinical Research Center · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 3 years 6 months after the study started (first participant enrolled Aug 2017, registered Mar 2021).
Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
18 Years to 30 Years
Sex
All
01

Study summary

Whole body vibration therapy is rapidly becoming a topic of interest for the researchers around the world. Evidence suggests that Whole body vibration has an effect on improving flexibility of hamstring muscle and balance in athletes. The purpose was to examine the effect of low amplitude Whole body vibration on the flexibility of hamstring muscle and improving balance in athletes of Pakistan

Read the detailed description

A total 60 number of athletes were analyzed and out of these 40 were included in the study who full fill the inclusion criteria, selected athletes were randomly assigned into two groups (control \& experimental). After a total 2 drop outs from control group and 3 drop outs from experimental group, there were 18 athletes in control group and 17 in experimental group who continued till the analysis. Experimental group was given five sessions of low amplitude whole body vibration therapy for almost duration of 10 minutes, on alternative days, along with static stretching of hamstring muscles for 5 minutes and the control group was given only the static hamstring muscle stretches for five minutes, and same five sessions alike on alternative days. Static stretching protocol had 10 stretches in total with 15 seconds stretch time and 30 seconds relaxing time of hamstring muscle. All participants were assessed using Biodex Whole body vibration plate, Biodex balance system , Goniometer and a questionnaire.

02

Conditions studied

  • Hamstring Contractures
  • Whole Body Vibration

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Keywords

  • whole body vibration
  • Hamstring flexibility
  • ROM
  • Balance
  • Postural stability index
03

In context

Contracture

151 studies on the registry are indexed under Contracture; 21 are open to participants now.

This study's enrollment of 40 is close to the median of 40 across 110 interventional studies indexed under Contracture.

Browse Contracture studies →

Lead sponsor

Shifa Clinical Research Center is the lead sponsor of 5 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 30 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • National athletes of Pakistan.
  • Age between 18-30 years

Exclusion criteria

Exclusion Criteria:

  • Athletes having history of any acute injury within last 6 weeks.
  • Athletes who have had any surgical procedure previously or Patients who were medically unstable.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
40 participants (actual)

Study arms

  • Other
    Control group

    The control group was given the static hamstring muscle stretches, five sessions on alternative days according to the set protocols.

    Other: Conventional static hamstring muscle stretching · Device: Biodex Balance System · Procedure: Range of motion of hamstring muscle

  • Experimental
    Experimental Group

    Given five sessions of low amplitude whole body vibration therapy for duration of 10 minutes, on alternative days, along with static stretching of hamstring muscles.

    Device: Low amplitude whole body vibration therapy · Device: Biodex Balance System · Procedure: Range of motion of hamstring muscle

Interventions

  • OtherConventional static hamstring muscle stretching

    Static stretching protocol had 10 repetitions in total with 15 seconds stretch time and 30 seconds relaxing time of hamstring muscle.

  • DeviceLow amplitude whole body vibration therapy

    Given five sessions of low amplitude whole body vibration therapy for duration of 10 minutes, on alternative days, along with static stretching of hamstring muscles. Static stretching protocol had 10 repetitions in total with 15 seconds stretch time and 30 seconds relaxing time of hamstring muscle.

  • DeviceBiodex Balance System

    Pre and post balance assessment by Biodex balance system

  • ProcedureRange of motion of hamstring muscle

    Straight Leg Raising to check pre and post Range of Motion by using Goniometer

06

What researchers measure

Primary outcomes

  1. Pre Range of Motion of hamstring muscle (ROM)

    The outcome was the pre status of flexibility in hamstring muscle assessed using Goniometer.

    Time frame: outcome at baseline (day zero)

  2. Post Range of Motion of hamstring muscle (ROM)

    The outcome was the post status of flexibility in hamstring muscle assessed using Goniometer.

    Time frame: outcome at the end of 10 days

  3. Pre Balance

    The outcome was pre balance testing using biodex balance system.

    Time frame: outcome at baseline (day zero)

  4. Post Balance

    The outcome was post balance testing using biodex balance system.

    Time frame: outcome at the end of 10 days

07

Study locations

1 site
  • Jaweria Syed
    Islamabad, 46000, Pakistan
08

References and documents

Individual participant data

Plan to share: Yes — There is a plan to make IPD and related data dictionaries available

Supporting information: Study protocol, Sap, Icf, Csr

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 5, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04784741
Lead sponsor
Shifa Clinical Research Center
Responsible party
Dr Jaweria Syed (Principal Investigator, Shifa Clinical Research Center) — Principal investigator
First posted
Mar 5, 2021
Start date
Aug 5, 2017
Primary completion
Nov 7, 2017
Completion
Jan 3, 2018
Last update
Mar 5, 2021

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.

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