Background: The limb occlusion pressure (LOP) is determined to calculate the relative LOP. The different levels of relative LOP (percentage of LOP), influence treatment effect, and perceived discomfort during low-load blood flow restriction (BFR) strength training. Hence, it is of outmost importance to determine the LOP when using BFR in clinical practice. Purpose: The objectives of this study were to investigate the concurrent validity and intra-rater (test-retest) intra-day reliability of an inexpensive, portable, easy-to-use handheld (HH) oximeter compared to a high-resolution Doppler ultrasound scanner to detect LOP in the lower extremity. Study design: Cross-sectional validity and reliability study Methods: 50 healthy participants (mean age 25.8 years) were simultaneously assessed by two raters blinded from each other. A 20-cm wide thigh cuff with an attached sphygmomanometer was inflated until the raters independently registered LOP with the HH oximeter and the Doppler ultrasound scanner. The test session was performed twice with a five-minute time interval. Results: Strong linear relationship was observed between the HH oximeter and Doppler ultrasound (r=0.84-0.86, p<0.001). Non-significantly higher LOP was measured with the HH oximeter compared with the Doppler Ultrasound with a mean difference at the test session of 6.3 mmHg (95% Limits of Agreement (LoA): -16.2 to 28.8, p=0.13), and at the retest session of 5.4 mmHg (95% LoA: -13.3 to 24.0, p=0.10). A systematic decrease from the test to the retest session was observed with a 5.7 mmHg (p=0.005) and 4.8 mmHg (p=0.003) higher LOP for the HH oximeter and the Doppler ultrasound, respectively. Conclusions: The HH oximeter is an acceptable, valid, and reliable measuring device to determine LOP of the lower extremity, in healthy adults. We recommend performing at least two LOP measurements. Level of Evidence: 2, Validity and reliability study Keywords: Blood flow restriction, oximeter, ultrasound, limb occlusion pressure, validity
|Publikationsdato||30 jan. 2020|
|Status||Udgivet - 30 jan. 2020|
|Begivenhed||DIMS Sportskongres 2020 - |
Varighed: 30 jan. 2020 → 1 feb. 2020
|Konference||DIMS Sportskongres 2020|
|Periode||30/01/20 → 01/02/20|
Brekke, A. F., Sørensen, A. N., Madsen, C. S. L., Johannesdottir, I. O., & Jakobsen, T. L. (2020). The validity and reliability of the handheld oximeter to determine limb occlusion pressure for blood flow restriction exercise in the lower extremity. Afhandling præsenteret på DIMS Sportskongres 2020, .