Objective
We aimed to investigate the relationship between serum neurofilament light chain (NfL) and grip strength using data from the 2013–2014 US National Health and Nutrition Examination Survey (NHANES).
Design
Secondary analysis of cross-sectional, population-based data.
Setting
NHANES sample, 2013–2014.
Participants
We studied 1925 participants aged 20–75 years.
Outcome measures and analysis
We applied a multivariable generalised linear regression model, adjusted for several potential confounders, and restrictive cubic spline models to evaluate the association between serum NfL and grip strength. Subgroup analyses were conducted using stratified multivariable linear regression analysis.
Results
We included 1925 participants (average age: 44.8±0.44 years) from the NHANES database. Participants with higher serum NfL levels had a significantly higher prevalence of medical conditions (hypertension, diabetes, cardiovascular disorder, chronic kidney disease (CKD) and cancer) compared with those with lower NfL levels (all p