Alternate Run Study

University of British Columbia300 enrolled

Overview

The proposed study will investigate the effect of alternating footwear model and workout-type on the occurrence of running-related pain. To achieve this goal participants will be randomly assigned into one of four different groups who will perform: 1) the same workout throughout a week in the same running shoe model, 2) alternating workout-types throughout the week in the same shoe model, 3) the same workout throughout a week in alternating shoe models, and 4) alternating workouts in alternating shoes. Participants will be characterized based on body alignment, strength, injury and training history. Pain and injury status will be monitored.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

NONE

Enrollment

300

Conditions

Overuse Injury

Interventions

Alternating run training loadOTHER

Runners will perform a variation of workouts, consisting of interval/speed work, tempo runs, and long-slow distance runs throughout each 7-day period

Alternating footwearOTHER

Runners will be assigned identical training sessions over a 7-day period but will alternate use of two different models of running shoes across successive workouts (Nike Pegasus and Nike Zoom Streak). The Zoom Streak has 10mm less midsole material, a less supportive heel counter and more flexible forefoot providing a more responsive feel to the runner.

Constant trainingOTHER

Runners will be assigned identical training sessions over a 7-day period.

Eligibility

Sex: ALLMin age: 19 YearsMax age: 60 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Subjects in this study will include adults (men and women) between the ages of 19 and 60, have been running on a regular basis (minimum once per week) over the past 6 months, are able to run for 60 minutes continuously, could tolerate 20-40km per week in training, and have not experienced a running related injury requiring a stoppage of 2-weeks or more in the past 6 months. Only neutral and pronated foot postures (Foot Posture Index between -2 and 8) will be recruited Exclusion Criteria: * have a history of surgery to their plantar fascia or Achilles tendon, * have a diagnosis of osteoarthritis - or other degenerative musculoskeletal disorder - affecting the lower extremity, * take analgesic or anti-inflammatory medication 2 or more times per week over the past 4 weeks, * take part in high impact activities 2 or more times per week during the study period

Locations (1)

Division of Sports Medicine

Vancouver, British Columbia, Canada

Outcomes

Primary Outcomes

Running injuries

When an participant misses 3 consecutive assigned running workouts.

Time frame: 13-weeks

Secondary Outcomes

Running-related pain

11-point numerical rating scale of overall pain associated with running

Time frame: 13-weeks

Region specific running-related pain

Numerical rating scale for pain at selected anatomical locations: gluteal, low back, groin, thigh, hamstring, knee, calf, Achilles, ankle, foot.

Time frame: 13-weeks

Footwear comfort

11-point rating of footwear comfort

Time frame: 13-weeks

Run Quality

Study specific 11-point measure of how the footwear used affected each run's quality

Time frame: 13-weeks

Data from ClinicalTrials.gov

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