Examining the Most Effective Method to Reduce Running Ground Contact Time
NCT ID: NCT06988709
Last Updated: 2025-12-12
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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RECRUITING
NA
30 participants
INTERVENTIONAL
2025-05-01
2026-12-01
Brief Summary
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Detailed Description
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The first aim will be to apply three running retraining conditions and assess the change in ground contact time and other spatiotemporal and biomechanical variables between the runner's baseline running and each retraining condition.
The three running conditions will be at the participant's self-selected speed corresponding to "a comfortable run for 30 minutes". The conditions will be, condition 1: a verbal cue to "pull your foot off the ground as quickly as you can," condition 2: a metronome set to 10% above their preferred cadence found during the baseline run, and condition 3: visual feedback to reduce their ground contact time through observing that number in real time provided by a commercial IMU. The participant will attempt to lower that to 5% below their baseline run ground contact time by being given that target number on a sheet of paper.
The second aim will be to examine the effect of the 3 running conditions on the runner's level of exertion and difficulty using the Omni Rate of Perceived Exertional Scale, the Rate of Perceived Difficulty, and ranking the techniques from 1 to 3 on which they felt was most natural.
We hypothesize that each method will reduce ground contact time, but condition 3 providing continuous visual feedback will result in the most consistent decrease to ground contact time across the runners and will be perceived as the easiest to perform.
Overall, this study will provide clinicians with a running retraining intervention that has been objectively shown to decrease ground contact time and provide researchers with a method to further investigate its effect on running injuries.
Conditions
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Study Design
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NA
SINGLE_GROUP
OTHER
NONE
Study Groups
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Run Retraining Conditions
Single-arm, within subject, repeated measures design. All participants will run at baseline and then under 3 different running conditions.
Real-time Visual Feedback
Runners will visualize their real-time ground contact time (GCT) measured by the RunScribe on a TV screen. They will be instructed to run with a goal of matching their target GCT. Their target GCT will be 5% less than their baseline.
Real-time Auditory Feedback
Runners will be instructed to match their step rate to a target step rate, 10% above their baseline step rate. A metronome will be played over a speaker to provide real-time auditory feedback of the target step rate.
Real-time Verbal Feedback
The clinician will provide real-time verbal feedback to runner to "pull your foot off the ground as quickly as you can," every 15 seconds during the retraining condition.
Interventions
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Real-time Visual Feedback
Runners will visualize their real-time ground contact time (GCT) measured by the RunScribe on a TV screen. They will be instructed to run with a goal of matching their target GCT. Their target GCT will be 5% less than their baseline.
Real-time Auditory Feedback
Runners will be instructed to match their step rate to a target step rate, 10% above their baseline step rate. A metronome will be played over a speaker to provide real-time auditory feedback of the target step rate.
Real-time Verbal Feedback
The clinician will provide real-time verbal feedback to runner to "pull your foot off the ground as quickly as you can," every 15 seconds during the retraining condition.
Eligibility Criteria
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Inclusion Criteria
* Run at least 2 miles three times per week for the past 3 months
* Able to run for at least 15 continuous minutes at a self-selected speed
* Fluent in the English language to read and provide informed consent and follow study instructions
Exclusion Criteria
* Lower extremity or low back surgery in the previous 6 months
* Self-reported pregnancy or given birth within the last 6 months
* Currently on a profile that restricts or limits running
17 Years
60 Years
ALL
Yes
Sponsors
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Keller Army Community Hospital
FED
Responsible Party
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Jennah Bulen
Principal Investigator
Locations
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Keller Army Community Hospital
West Point, New York, United States
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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24KACH008
Identifier Type: OTHER
Identifier Source: secondary_id
KACH.2025.0009
Identifier Type: -
Identifier Source: org_study_id
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