Key result
Three-minute right arm exercise increases the prevalence of diastolic interarm differences ≥10 mmHg to ~80%.
Why the study?
Does one arm exercise induce significant interarm blood pressure difference in healthy young participants?
Does one arm exercise induce significant interarm blood pressure difference in healthy young participants?
One arm exercise immediately prior to blood pressure measurement induces a significant artifactual interarm difference in diastolic blood pressure, reinforcing the need to avoid exercise before BP assessment.
Answers are grounded in this paper and cite their sources.
Right-arm exercise may artifactually increase interarm diastolic BP differences; leaves open effects on routine clinical assessment protocols.
OBJECTIVES: This study is designed to investigate the inducing effect of one arm exercise on interarm difference (IAD) in the blood pressure (BP). METHODS: Fifty healthy young participants were included in the study. Three-minute exercises of the right arm elbow flexion and extension were performed. The bilateral brachial BP was simultaneously measured with two automatic BP measurement devices before (basic) and immediately 0, 5, 10, 15, 20, and 30 min after exercise. The absolute difference in the systolic BP (SBP) and diastolic BP (DBP) between the left and right BP of at least 10 mmHg was recognized as sIAD and dIAD. RESULTS: The baseline data of the SBP and DBP in left and right arms revealed no significant difference (SBP: 110 ± 10 vs. 111 ± 11 mmHg; DBP: 66 ± 8 vs. 66 ± 9 mmHg, both not significant). The prevalence of dIAD was 2% at the baseline. However, this prevalence increased to 80% at 0 min, as right arm exercise induced the right DBP decrease and left DBP increase, and then the prevalence decreased gradually within a 30-min recovery period. The prevalence of sIAD was zero at the baseline and the maximal prevalence was 8% during the 20-min postexercise period. CONCLUSION: One arm exercise can lead to a significant IAD in DBP. Any arm exercise should be avoided before BP measurement.
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Hong et al. (2011) studied Healthy (n=50). Right arm exercise (elbow flexion and extension) vs. Baseline (before exercise) was evaluated on Prevalence of diastolic interarm difference (dIAD) ≥10 mmHg. Three-minute right arm exercise increased the prevalence of diastolic interarm blood pressure difference (≥10 mmHg) from 2% at baseline to 80% immediately post-exercise.
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