showed a trendp = 0.053
Importantly, while the improvement in LDL-C and HDL-C did not differ significantly between genotype groups—suggesting that the beneficial effects of aquatic HIIT on these lipids are largely independent of ACE I/D polymorphism—post-intervention lipid profiles revealed genotype-dependent patterns: adjusted mean TG levels were significantly lower in the ID/DD group compared to the II group ( p = 0.000), and HDL-C levels showed a trend toward being higher in the ID/DD group ( p = 0.053).