Healthy PopulationNCT06988384
Effects of a Professional Objective Bike Fit on Power Output and Comfort
A study testing Bike fitting in people with Healthy Population, run by University of Wisconsin, River Falls at 1 site in United States.
Trial summary
This study aims to evaluate whether an objective, data-driven bike fitting using the id match 3D motion capture system improves power output in recreational cyclists. Participants will complete two cycling performance tests, a 6-second Wingate Anaerobic Test (PPT6) and a 20-minute Functional Threshold Power (FTP)… Read more about this study
- Who is it for?
- Ages 18 to 64 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy Population
- What is being tested?
- Bike fitting
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 12 participants
- Where
- 1 siteUnited States
- Study dates
- 1 Jan 2024to 31 Dec 2024
- 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 64 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Participates in structured exercise more than 2 times per week (≥ 30 minutes per session) Owns a road or gravel bicycle Available for two laboratory visits within a 96-hour period Passes the PAR-Q+ questionnaire
Who cannot join
- Has previously undergone a professional bicycle fitting
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Wisconsin - River Falls
River Falls, Wisconsin, 54022
About this study
This study aims to evaluate whether an objective, data-driven bike fitting using the id match 3D motion capture system improves power output in recreational cyclists. Participants will complete two cycling performance tests, a 6-second Wingate Anaerobic Test (PPT6) and a 20-minute Functional Threshold Power (FTP) test, before and after receiving a professional bike fitting. The primary outcome is the change in power output on both tests. Secondary outcomes include subjective measures of comfort, pain, and perceived exertion. The goal is to determine whether bike fitting alone, independent of training, can enhance both performance and the overall riding experience.
Read the detailed description
This is a prospective, interventional crossover study evaluating the impact of professional bike fitting on cycling performance and comfort in recreational cyclists. All participants must engage in structured physical activity at least twice per week (≥30 minutes per session), own a road or gravel bicycle, and are available for two laboratory visits within a 96-hour period. All participants must complete the PAR-Q+ and a health history questionnaire.
At Visit 1, participants will undergo baseline testing. Their current bike setup will be replicated on a Wattbike ergometer. Participants will complete two performance tests: a six-second peak power test (PPT6) and a 20-minute Functional Threshold Power (FTP) test. For the PPT6, participants perform a seated sprint from a dead stop following a five-minute warm-up and two-minute rest. Metrics collected include peak power (W), relative peak power (W/kg), cadence (rpm), and leg imbalance (%). The FTP test will be conducted on each participant's personal bicycle mounted to a Wahoo KICKR MOVE smart trainer. Power, cadence, and torque are recorded, along with physiological data captured using a Polar H10 heart rate monitor and a COSMED Quark CPET system to measure VO₂, VCO₂, and RER. Following these assessments, participants will receive a professional bike fitting using the id match Smart Bike system.
The id match system (Casella d'Asolo, Italy) uses 3D motion capture, static anthropometric scans (e.g., limb length, lumbar flexion, foot dimensions), and machine learning algorithms to optimize rider positioning. The fitting process adjusts variables such as saddle height, saddle setback, handlebar reach and drop, and cleat position. A certified id match fitter will perform each fitting, which is guided by participant-reported cycling history and pain ratings by body region on a 1-10 scale.
Between 48 and 96 hours after the initial visit, participants will return for Visit 2 and repeat both the PPT6 and FTP tests using their updated bike configuration. All equipment, testing protocols, and data collection methods remain consistent between visits.
Primary outcome measures include peak power and relative peak power (W/kg) from the PPT6, and FTP (W), relative FTP (W/kg), and average torque (ft-lb.) from the 20-minute FTP test. Secondary outcomes include perceived exertion (Borg RPE 6-20 scale), discomfort (Likert scale 1-20), region-specific pain, and biomechanical changes to bike setup (e.g., saddle height, setback, cleat position, joint angles).
- Conditions
- Healthy Population
- Being tested
- Bike fitting
- Keywords
- bike fitting, bike configuration, peak power, functional threshold power, cycling pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Bike fittingOther
Participants underwent bike fitting using the idmatch system, which utilizes three-dimensional motion capture to optimize rider position.
| Study group | Role | What they receive |
|---|---|---|
| idmatch bike fitting | Experimental | Participants will undergo bike fitting using the idmatch system, which utilizes three-dimensional motion capture to optimize rider position. Receives: Other: Bike fitting |
What is being measured
The primary outcome is the main question the study is designed to answer.
Power output
Peak power during a six-second peak power test
Measured: Baseline (Day 1) and 48 to 96 hours post-baseline
Functional threshold power
Aveage power during a 20-minute functional threshold power test.
Measured: Baseline (Day 1) and 48 to 96 hours post-baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 May 2025
- Study start1 Jan 2024
- Primary completion31 Dec 2024
- Study completion31 Dec 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Healthy PopulationStudies 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
- 12 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Wisconsin, River Falls
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Gregory Ruegsegger, University of Wisconsin, River Falls
- Investigators
- Gregory Ruegsegger, Ph.D., Principal investigator, University of Wisconsin, River Falls
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06988384
- Sponsor's protocol ID
- FY2024-7
- Status last verified
- May 2025
- First submitted
- 7 May 2025
- Last updated
- 30 May 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: De-identified individual-level data related to primary and secondary outcomes will be shared. This includes pre- and post-fitting results from the 6-second Wingate Anaerobic Test (peak power), the 20-minute Functional Threshold Power (average power and torque), and self-reported measures of perceived exertion and musculoskeletal discomfort. Basic demographic data (age, sex, height, weight, cycling experience) will also be included.
Study at a glance
From the registry record, last updated by the sponsor on 30 May 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of a Professional Objective Bike Fit on Power Output and Comfort
- ClinicalTrials.gov ID
- NCT06988384
- Acronym / sponsor ID
- FY2024-7
- Conditions
- Healthy Population
- Keywords
- bike fitting, bike configuration, peak power, functional threshold power, cycling pain
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 12 participants (actual)
- Lead sponsor
- University of Wisconsin, River FallsUniversity, hospital or other
- Study start
- 1 Jan 2024 (actual)
- Primary completion
- 31 Dec 2024 (actual)
- Study completion
- 31 Dec 2024 (actual)
- First posted
- 23 May 2025 (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.
This study aims to evaluate whether an objective, data-driven bike fitting using the id match 3D motion capture system improves power output in recreational cyclists. Participants will complete two cycling performance tests, a 6-second Wingate Anaerobic Test (PPT6) and a 20-minute Functional Threshold Power (FTP) test, before and after receiving a professional bike fitting. The primary outcome is the change in power output on both tests. Secondary outcomes include subjective measures of comfort, pain, and perceived exertion. The goal is to determine whether bike fitting alone, independent of training, can enhance both performance and the overall riding experience.
Detailed description
This is a prospective, interventional crossover study evaluating the impact of professional bike fitting on cycling performance and comfort in recreational cyclists. All participants must engage in structured physical activity at least twice per week (≥30 minutes per session), own a road or gravel bicycle, and are available for two laboratory visits within a 96-hour period. All participants must complete the PAR-Q+ and a health history questionnaire.
At Visit 1, participants will undergo baseline testing. Their current bike setup will be replicated on a Wattbike ergometer. Participants will complete two performance tests: a six-second peak power test (PPT6) and a 20-minute Functional Threshold Power (FTP) test. For the PPT6, participants perform a seated sprint from a dead stop following a five-minute warm-up and two-minute rest. Metrics collected include peak power (W), relative peak power (W/kg), cadence (rpm), and leg imbalance (%). The FTP test will be conducted on each participant's personal bicycle mounted to a Wahoo KICKR MOVE smart trainer. Power, cadence, and torque are recorded, along with physiological data captured using a Polar H10 heart rate monitor and a COSMED Quark CPET system to measure VO₂, VCO₂, and RER. Following these assessments, participants will receive a professional bike fitting using the id match Smart Bike system.
The id match system (Casella d'Asolo, Italy) uses 3D motion capture, static anthropometric scans (e.g., limb length, lumbar flexion, foot dimensions), and machine learning algorithms to optimize rider positioning. The fitting process adjusts variables such as saddle height, saddle setback, handlebar reach and drop, and cleat position. A certified id match fitter will perform each fitting, which is guided by participant-reported cycling history and pain ratings by body region on a 1-10 scale.
Between 48 and 96 hours after the initial visit, participants will return for Visit 2 and repeat both the PPT6 and FTP tests using their updated bike configuration. All equipment, testing protocols, and data collection methods remain consistent between visits.
Primary outcome measures include peak power and relative peak power (W/kg) from the PPT6, and FTP (W), relative FTP (W/kg), and average torque (ft-lb.) from the 20-minute FTP test. Secondary outcomes include perceived exertion (Borg RPE 6-20 scale), discomfort (Likert scale 1-20), region-specific pain, and biomechanical changes to bike setup (e.g., saddle height, setback, cleat position, joint angles).
Study design
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| idmatch bike fitting | Experimental | Other: Bike fittingParticipants will undergo bike fitting using the idmatch system, which utilizes three-dimensional motion capture to optimize rider position. |
Who may qualify
- Ages
- 18 to 64 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- Participates in structured exercise more than 2 times per week (≥ 30 minutes per session) Owns a road or gravel bicycle Available for two laboratory visits within a 96-hour period Passes the PAR-Q+ questionnaire
Key exclusion criteria (1 listed)
- Has previously undergone a professional bicycle fitting
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 |
|---|---|---|
| Bike fittingParticipants underwent bike fitting using the idmatch system, which utilizes three-dimensional motion capture to optimize rider position. | Other | idmatch bike fitting |
Primary outcome
Power output
Time frame: Baseline (Day 1) and 48 to 96 hours post-baseline
Peak power during a six-second peak power test
Functional threshold power
Time frame: Baseline (Day 1) and 48 to 96 hours post-baseline
Aveage power during a 20-minute functional threshold power test.
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 30 May 2025.
- Individual participant dataSharing planned: Yes. De-identified individual-level data related to primary and secondary outcomes will be shared. This includes pre- and post-fitting results from the 6-second Wingate Anaerobic Test (peak power), the 20-minute Functional Threshold Power (average power and torque), and self-reported measures of perceived exertion and musculoskeletal discomfort. Basic demographic data (age, sex, height, weight, cycling experience) will also be included.
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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.
Gregory Ruegsegger, Ph.D. principal investigator
University of Wisconsin, River Falls
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Bike fitting in people with Healthy Population, run by University of Wisconsin, River Falls at 1 site in United States.
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 1 inclusion and 1 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 30 May 2025. 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 United States. 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?
Power output (time frame: Baseline (Day 1) and 48 to 96 hours post-baseline). The study lists 2 primary outcomes in all. 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 30 May 2025.