borderline significancep = 0.05
A meta-analysis confirmed that whey protein supplementation for at least four weeks reduced both waist circumference ( p = 0.03, I 2 : 77%, P heterogeneity : 0.00) and body fat mass ( p = 0.04, I 2 : 00.0%, P heterogeneity : 0.44) with statistical significance, followed by borderline significance in BMI decrement (statistically borderline significant ( p = 0.05, I 2 : 23%, P heterogeneity : 0.16)), while preserving lean body mass, since no statistically significant changes in lean body mass were observed between the pre-and post-intervention data.