Sports Physical TherapyNCT07716150
Reliability of Custom-Made Platform for Trunk Flexion Isometric Strength Assessment
A study testing Custom-Made Standing Platform for Trunk Flexion Isometric Strength Assessment in people with Sports Physical Therapy, run by Riphah International University at 1 site in Pakistan.
Trial summary
Trunk flexion strength is an essential component of core muscle performance, playing a critical role in spinal stability, injury prevention, and athletic function. While isokinetic dynamometers remain gold standard for trunk strength assessment, their high cost and limited accessibility restrict their use in most… Read more about this study
- Who is it for?
- Ages 18 to 25 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Sports Physical Therapy
- What is being tested?
- Custom-Made Standing Platform for Trunk Flexion Isometric Strength Assessment
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- 1 sitePakistan
- Study dates
- 1 May 2026to 30 Jul 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 25 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy males
- Age between 18 and 25 years
- Non-athletes
- No history of musculoskeletal injuries specifically in the trunk region
Who cannot join
- History of any medical condition that would affect trunk muscle strength
- Athletes
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Reliability of Custom-Made Platform for Trunk Flexion Isometric Strength Assessment in Healthy Young Adults
Trunk flexion strength is an essential component of core muscle performance, playing a critical role in spinal stability, injury prevention, and athletic function. While isokinetic dynamometers remain gold standard for trunk strength assessment, their high cost and limited accessibility restrict their use in most clinical and field settings in Pakistan. There is a need for reliable, affordable alternative that can be used by physiotherapists and sports practitioners without access to specialized laboratory equipment. Therefore, this study aims to evaluate the reliability of a custom-made standing platform for measuring trunk flexion isometric strength in healthy young adults. Establishing the reliability of this device will enable clinicians and researchers to confidently use it as a practical and cost effective tool for trunk strength assessment in both clinical and sports settings.
Read the detailed description
The custom-made platform is a standing device designed to measure maximal voluntary isometric trunk flexion force. During testing, participants stand on the platform and lean forward to a standardised angle of 17.5 degrees of trunk flexion. A trunk belt connected to a handheld dynamometer fixed to the rear platform records the force generated when the participant pushes forward against the belt during a maximal isometric contraction. Force is recorded in Newtons using Biopac Student Lab Pro software through the MP36 data acquisition unit.
A cross-sectional test-retest reliability design will be employed. Twenty-nine healthy male participants aged 18-25 years will be recruited from Riphah International University using non-probability convenience sampling. Each participant will attend two identical testing sessions spaced one week apart, conducted at the same time of the day to control for diurnal variation in muscle strength. During each session, participants will perform three maximal voluntary isometric trunk flexion contractions of five seconds duration, with sixty seconds of passive rest between trials. The average force across the three trials will be recorded in Newtons and used as the primary outcome variable for analysis.
Reliability will be assessed using the Intraclass Correlation Coefficients with two-way random effects model for absolute agreement, single measures - ICC (2,1) - reported alongside the 95% confidence interval. Values below 0.50 will be interpreted as poor reliability, 0.50 to 0.75 as moderate, 0.75 to 0.90 as good, and above 0.90 excellent. Absolute reliability will be quantified using the Standard Error of Measurement and the Minimal Detectable Change at 95% confidence level. Bland-Altman analysis will be used to assess systematic bias and limits of agreement between sessions. A paired t-test or Wilcoxon signed-rank test, depending on normality assessed by the Shapiro-Wilk test, will determine whether a statistically significant learning effect exists between Session 1 and Session 2. All statistical analyses will be conducted using SPSS Version 30 at a significance level of 0.05.
If the platform demonstrates good to excellent reliability, it will be validated as a feasible and affordable alternative to isokinetic dynamometry for trunk flexion isometric strength assessment, with direct implications for physiotherapy practice and sports science research in Pakistan.
- Conditions
- Sports Physical Therapy
- Being tested
- Custom-Made Standing Platform for Trunk Flexion Isometric Strength Assessment
- Keywords
- Isometric Muscle Strength
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Custom-Made Standing Platform for Trunk Flexion Isometric Strength AssessmentDevice
Participants stand at 17.5° trunk flexion and perform 3 maximal isometric contractions of 5 seconds against a belt-connected dynamometer. Force recorded in Newtons. Repeated one week later.
| Study group | Role | What they receive |
|---|---|---|
| Reliability of Custom-Made Platform for Trunk Flexion Isometric Strength Assessment | Other | Healthy adult participants will undergo repeated trunk flexion isometric strength assessments using a custom-made testing platform. Measurements will be repeated under standardized conditions by the same examiner to assess the reliability of the platform. No intervention will be administered. Receives: Device: Custom-Made Standing Platform for Trunk Flexion Isometric Strength Assessment |
What is being measured
The primary outcome is the main question the study is designed to answer.
Trunk muscles isometric strength
Participants stand at 17.5° trunk flexion and perform 3 maximal isometric contractions of 5 seconds while attached to a dynamometer connected via a specalized harness. Force recorded in Newtons.
Measured: 1 week.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Jul 2026
- Study start1 May 2026
- Primary completion30 Jul 2026
- Study completion30 Jul 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Sports Physical TherapyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 20 participants (actual)
Sponsor and investigators
- Lead sponsor
- Riphah International University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Saad Rauf, PhD, Principal investigator, Riphah International University, Isra University, Islamabad
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07716150
- Sponsor's protocol ID
- REC/MS-PT/02196 Farwa Abid
- Status last verified
- Aug 2026
- First submitted
- 16 Jul 2026
- Last updated
- 6 Aug 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 6 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Reliability of Custom-Made Platform for Trunk Flexion Isometric Strength Assessment in Healthy Young Adults
- ClinicalTrials.gov ID
- NCT07716150
- Acronym / sponsor ID
- REC/MS-PT/02196 Farwa Abid
- Conditions
- Sports Physical Therapy
- Keywords
- Isometric Muscle Strength
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- Riphah International UniversityUniversity, hospital or other
- Study start
- 1 May 2026 (actual)
- Primary completion
- 30 Jul 2026 (actual)
- Study completion
- 30 Jul 2026 (actual)
- First posted
- 21 Jul 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Trunk flexion strength is an essential component of core muscle performance, playing a critical role in spinal stability, injury prevention, and athletic function. While isokinetic dynamometers remain gold standard for trunk strength assessment, their high cost and limited accessibility restrict their use in most clinical and field settings in Pakistan. There is a need for reliable, affordable alternative that can be used by physiotherapists and sports practitioners without access to specialized laboratory equipment. Therefore, this study aims to evaluate the reliability of a custom-made standing platform for measuring trunk flexion isometric strength in healthy young adults. Establishing the reliability of this device will enable clinicians and researchers to confidently use it as a practical and cost effective tool for trunk strength assessment in both clinical and sports settings.
Detailed description
The custom-made platform is a standing device designed to measure maximal voluntary isometric trunk flexion force. During testing, participants stand on the platform and lean forward to a standardised angle of 17.5 degrees of trunk flexion. A trunk belt connected to a handheld dynamometer fixed to the rear platform records the force generated when the participant pushes forward against the belt during a maximal isometric contraction. Force is recorded in Newtons using Biopac Student Lab Pro software through the MP36 data acquisition unit.
A cross-sectional test-retest reliability design will be employed. Twenty-nine healthy male participants aged 18-25 years will be recruited from Riphah International University using non-probability convenience sampling. Each participant will attend two identical testing sessions spaced one week apart, conducted at the same time of the day to control for diurnal variation in muscle strength. During each session, participants will perform three maximal voluntary isometric trunk flexion contractions of five seconds duration, with sixty seconds of passive rest between trials. The average force across the three trials will be recorded in Newtons and used as the primary outcome variable for analysis.
Reliability will be assessed using the Intraclass Correlation Coefficients with two-way random effects model for absolute agreement, single measures - ICC (2,1) - reported alongside the 95% confidence interval. Values below 0.50 will be interpreted as poor reliability, 0.50 to 0.75 as moderate, 0.75 to 0.90 as good, and above 0.90 excellent. Absolute reliability will be quantified using the Standard Error of Measurement and the Minimal Detectable Change at 95% confidence level. Bland-Altman analysis will be used to assess systematic bias and limits of agreement between sessions. A paired t-test or Wilcoxon signed-rank test, depending on normality assessed by the Shapiro-Wilk test, will determine whether a statistically significant learning effect exists between Session 1 and Session 2. All statistical analyses will be conducted using SPSS Version 30 at a significance level of 0.05.
If the platform demonstrates good to excellent reliability, it will be validated as a feasible and affordable alternative to isokinetic dynamometry for trunk flexion isometric strength assessment, with direct implications for physiotherapy practice and sports science research in Pakistan.
Study design
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Reliability of Custom-Made Platform for Trunk Flexion Isometric Strength Assessment | Other | Device: Custom-Made Standing Platform for Trunk Flexion Isometric Strength AssessmentHealthy adult participants will undergo repeated trunk flexion isometric strength assessments using a custom-made testing platform. Measurements will be repeated under standardized conditions by the same examiner to assess the reliability of the platform. No intervention will be administered. |
Who may qualify
- Ages
- 18 to 25 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Healthy males
- Age between 18 and 25 years
- Non-athletes
- No history of musculoskeletal injuries specifically in the trunk region
Key exclusion criteria (2 listed)
- History of any medical condition that would affect trunk muscle strength
- Athletes
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Custom-Made Standing Platform for Trunk Flexion Isometric Strength AssessmentParticipants stand at 17.5° trunk flexion and perform 3 maximal isometric contractions of 5 seconds against a belt-connected dynamometer. Force recorded in Newtons. Repeated one week later. | Device | Reliability of Custom-Made Platform for Trunk Flexion Isometric Strength Assessment |
Primary outcome
Trunk muscles isometric strength
Time frame: 1 week.
Participants stand at 17.5° trunk flexion and perform 3 maximal isometric contractions of 5 seconds while attached to a dynamometer connected via a specalized harness. Force recorded in Newtons.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Aug 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Saad Rauf, PhD principal investigator
Riphah International University, Isra University, Islamabad
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Custom-Made Standing Platform for Trunk Flexion Isometric Strength Assessment in people with Sports Physical Therapy, run by Riphah International University at 1 site in Pakistan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 6 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Pakistan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Trunk muscles isometric strength (time frame: 1 week.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Aug 2026.