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The pain trajectory during treadmill testing in peripheral artery disease
Diane Treat-Jacobson1, Susan J Henly, Ulf G Bronas
1School of Kinesiology, University of Minnesota, Minneapolis,MN55455, USA. treat001@umn.edu
Nursing Research
|May 6, 2011
Summary
Different exercise types alter pain progression in peripheral artery disease. Arm ergometry delayed pain onset, while treadmill training slowed pain increase during walking tests.
Area of Science:
- Exercise physiology
- Clinical pain research
- Biostatistics
Background:
- Peripheral artery disease (PAD) causes claudication, limiting mobility and quality of life.
- Pain during walking tests is a key outcome in PAD clinical trials.
Purpose of the Study:
- To model changes in pain trajectories during a peak walking test after 12 weeks of exercise intervention.
- To compare pain trajectories across treadmill, arm ergometry, combination, and usual care groups against baseline.
Main Methods:
- 41 PAD participants completed supervised exercise training for 12 weeks.
- Pain was rated on a 0-5 scale every 30 seconds during a maximal walking test.
- Hierarchical generalized linear models were used to analyze pain trajectories over time.
Main Results:
- All exercise groups showed improved pain trajectories post-intervention.
- Arm ergometry demonstrated a slower onset of pain.
- Treadmill training exhibited slower acceleration to maximum pain levels.
Conclusions:
- Exercise interventions significantly alter claudication pain trajectories in PAD patients.
- The type of exercise influences the pattern of pain experienced during walking.
- Findings can guide future clinical trial design and exercise recommendations for PAD.
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