Inter-Session Reliability of Functional Performance and Muscle Power in Adults With Severe Obesity.
Søren Gam1,2,3, Anders K Petz1,4, Lukas R Bjerre1,4
1Department of Diabetes and Endocrinology, University Hospital of Southern Denmark, Esbjerg, Denmark.
Scandinavian Journal of Medicine & Science in Sports
|January 3, 2025
Summary
Physical function tests are reliable for adults with severe obesity. A familiarization session improves test-retest reliability and sensitivity for better clinical assessment.
Area of Science:
- Rehabilitation Medicine
- Clinical Biomechanics
- Obesity Research
Background:
- Reliable and sensitive physical function testing is vital for evaluating interventions in patient populations.
- Assessing physical function in adults with severe obesity is critical for bariatric surgery candidates.
Purpose of the Study:
- To investigate the test-retest reliability and sensitivity of physical performance tests in adults with severe obesity.
- To determine the impact of a familiarization session on test performance and reliability.
Main Methods:
- Thirty-two adults with severe obesity (BMI 43.8±6.6 kg/m²) underwent three test sessions over 3-7 days.
- Evaluated tests included walking speed, endurance, handgrip strength, and lower limb muscle power (Sit-to-Stand, stair climb).
- Familiarization session (test 1) was compared to subsequent testing sessions (test 2 vs. 3).
Main Results:
- Tests demonstrated good-to-excellent inter-session reproducibility (ICC: 0.84-0.98) with sensitivity (SDD) from 11.8% to 31.2%.
- Learning effects were observed for Sit-to-Stand and habitual walk speed tests between sessions 1 and 2.
- A familiarization session eliminated these learning effects, improving reproducibility and sensitivity for most tests.
Conclusions:
- Physical function can be reliably assessed in adults with severe obesity using selected tests.
- Implementing a familiarization session enhances the test-retest reliability and sensitivity of these assessments.
- These findings support the use of standardized testing protocols with familiarization for this population.
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