Peak Impact Forces and Metabolic Cost During Mid-Forefoot Striking in Shod Versus Barefoot Runners

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
University of Florida
ClinicalTrials.gov Identifier:
NCT01536171
First received: November 2, 2011
Last updated: October 11, 2012
Last verified: October 2012
  Purpose

This experimental study will compare impact forces and metabolic cost in runners (N=20; ages 18-45 years, who already use a forefoot strike running gait) in two treadmill running test sessions (shod vs barefoot running)


Condition Intervention
Healthy
Other: no interventions

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Peak Impact Forces and Metabolic Cost During Mid-Forefoot Striking in Shod Versus Barefoot Runners: A Pilot Study

Resource links provided by NLM:


Further study details as provided by University of Florida:

Primary Outcome Measures:
  • Biomechanics and peak impact forces with barefoot shod running [ Time Frame: Study consists of one visit for approximately 2 hrs. ] [ Designated as safety issue: No ]

    This study will be measuring the impact forces that a runner produces when their feet strike the ground.

    Impact forces will be collected as a person runs over force plates that are embedded in the lab floor. The foot impact forces will be compared when the runner wears shoes and when they are barefoot.

    Each person will run for 20 minutes on the treadmill on two different days, one with and one day without shoes. Impact forces and calories used will be collected on both days.



Secondary Outcome Measures:
  • Metabolic rate during barefoot and shod running [ Time Frame: Study consists of one visit for approximately 2 hrs ] [ Designated as safety issue: No ]

    This study will also measure how many calories are burned when a person runs on the treadmill with and without shoes.

    Calories burned will be estimated from a small portable machine that is worn on the runner's body. The machine will collect samples of the runners breath during exercises, and calculate out the calories used.

    Each person will run for 20 minutes on the treadmill on two different days, one with and one day without shoes. Impact forces and calories used will be collected on both days.



Enrollment: 24
Study Start Date: September 2011
Study Completion Date: July 2012
Primary Completion Date: July 2012 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Mid-Forefoot Striking in Shod versus Barefoot Runners
trained runners (men,women) with a FM strike (verified in the lab)
Other: no interventions
no interventions

Detailed Description:

Specific Aim 1: To identify if differences in peak impact forces exist between barefoot versus cushioned shod runners in forefoot-midfoot (FM) strikers.

Hypothesis: Peak impact forces will be higher in the barefoot runners with a forefoot and midfoot striking running style compared to the cushioned shod runners with a forefoot and midfoot striking running style.

Specific Aim 2: To identify if differences in metabolic cost exist between barefoot versus cushioned shod FM strikers during an acute bout of running exercise.

Hypothesis: The metabolic cost will be higher in the cushioned shod runners with forefoot and midfoot strike compared to the barefoot runners.

  Eligibility

Ages Eligible for Study:   18 Years to 45 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population

trained runners (men and women) who run with a FM strike (self-reported and verified in the laboratory).

Criteria

Inclusion Criteria:

  • trained runners with a running foot striking style of either initial forefoot or midfoot strike.
  • run on average at least 20 miles/week
  • be able to run for at least 20 minutes at one session
  • free of any orthopedic limitation

Exclusion Criteria:

  • history of lower extremity injury within the last 6 months prior to testing
  • rear-foot strike running style
  • does not run in a cushioned shoe on any occasion
  • runs on average < 20 miles/week
  • unable to run for 20 minutes or greater
  • presence of any open wound or deformity on the feet which would prevent participant from running barefoot
  • neurologic injury that would preclude normal running activity.
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT01536171

Locations
United States, Florida
UF&Shands Orthopaedics and Sports Medicine Institute
Gainesville, Florida, United States, 32611
Sponsors and Collaborators
University of Florida
Investigators
Principal Investigator: Heather K Vincent, PhD University of Florida
  More Information

No publications provided

Responsible Party: University of Florida
ClinicalTrials.gov Identifier: NCT01536171     History of Changes
Other Study ID Numbers: 497-2010
Study First Received: November 2, 2011
Last Updated: October 11, 2012
Health Authority: United States: Institutional Review Board

Keywords provided by University of Florida:
runners
mid-foot strike
fore foot strike
metabolic costs
trained runners (men,women) with a FM strike

ClinicalTrials.gov processed this record on April 17, 2014