Objectives The aim of this cross-sectional study was to explore the associations of reallocating time between moderate- to vigorous-intensity physical activity (MVPA). light-intensity physical activity (LPA). sedentary behaviour (SB) and sleep with occurrence. frequency and intensity of low back pain (LBP) among adults using compositional isotemporal substitution analysis. https://www.jalyttlers.shop/product-category/vase/