| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
| PROSPERO | International Prospective Register of Systematic Reviews |
| PICOS | Population, Intervention, Comparator, Outcomes, Study design |
| WP | Whey Protein |
| PLA | Placebo |
| BF% | Body Fat Percentage |
| LBM | Lean Body Mass |
| WC | Waist Circumference |
| WHR | Waist-to-Hip Ratio |
| HOMA-IR | Homeostatic Model Assessment for Insulin Resistance |
| TG | Triglycerides |
| TCH | Total Cholesterol |
| LDL | Low-Density Lipoprotein Cholesterol |
| HDL | High-Density Lipoprotein Cholesterol |
| IQR | Interquartile Range |
| SD | Standard Deviation |
| PEDro | Physiotherapy Evidence Database |
| CMA3 | Comprehensive Meta-Analysis version 3 |
| WMD | Weighted Mean Difference |
| SMD | Standardized Mean Difference |
| CI | Confidence Interval |
| RCT | Randomized Controlled Trial |