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Association Between Locomotive Syndrome and N-Terminal Pro B-Type Natriuretic Peptide Concentration in a Health
Chiaki Mizuno1, Hiroaki Hiraiwa1, Shinya Yokoyama2
1Department of Cardiology, Nagoya University Graduate School of Medicine Nagoya Japan.
Background:
Locomotive syndrome (LS), an early predictor of physical frailty, is frequently evaluated during health screenings in Japan. However, its relationship with early cardiac dysfunction remains unclear. We investigated the association between LS severity and N-terminal pro B-type natriuretic peptide (NT-proBNP) concentration, a myocardial stress biomarker, in a general health screening population.
Methods And Results:
This cross-sectional study analyzed 8,593 individuals who underwent health checkups between 2018 and 2023 in Aichi, Japan. LS was assessed using the Short Test Battery for LS, including physical tests and a 25-item questionnaire, and NT-proBNP was measured from blood samples. Individuals were categorized by LS stage (non-LS and stages 1-3) and NT-proBNP concentration (<55, 55-124, 125-299, ≥300 pg/mL). Logistic regression was used to evaluate the association between LS severity and elevated NT-proBNP (cut-off ≥125 pg/mL). A stepwise increase in NT-proBNP was observed with higher LS stage (Ptrend <0.001). Compared with non-LS, LS stages 2 (odds ratio [OR] 2.24; 95% confidence interval [CI] 1.35-3.72) and 3 (OR 3.51; 95% CI 2.02-6.12) were independently associated with elevated NT-proBNP.
Conclusions:
The increase in NT-proBNP with LS severity suggests a link between myocardial stress progression and physical function decline in asymptomatic individuals. LS assessment may help identify early stage cardiovascular dysfunction, although the causal relationship between LS and cardiac dysfunction remains to be clarified.
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