Effect of protein intake beyond habitual intakes following resistance training on cardiometabolic risk disease parameters in pre-conditioned older women.
Study Goal
The researchers aimed to analyze the effects of higher protein intake combined with resistance training on cardiometabolic risk parameters in older women.
Results Summary
The high-protein group showed greater improvements in lean soft tissue, total cholesterol/HDL ratio, and volume of load compared to the placebo group. Both groups improved in HDL, LDL, triglycerides, total cholesterol, LDL/HDL ratio, and CRP, but without significant differences between them.
Population
Pre-conditioned older women
Effective Dosage
35 g of protein (whey) after training sessions
Duration
12 weeks
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
higher protein (HP) intake associated with resistance training (RT) | increase | lean soft tissue (LST) | pre-conditioned older women | +3.8% vs +2.0% | presented greater improvements | #1 |
higher protein (HP) intake associated with resistance training (RT) | decrease | total cholesterol/high density lipoprotein ratio (TC/HDL) | pre-conditioned older women | -11.8% vs -2.9% | presented greater improvements | #2 |
higher protein (HP) intake associated with resistance training (RT) | increase | volume of load (VL) | pre-conditioned older women | 45.4% vs 35.4% | presented greater improvements | #3 |
higher protein (HP) intake associated with resistance training (RT) | increase | HDL | pre-conditioned older women | +6.7% vs +6.3% | improved | #4 |
higher protein (HP) intake associated with resistance training (RT) | decrease | LDL | pre-conditioned older women | -6.8% vs +0.9% | improved | #5 |
higher protein (HP) intake associated with resistance training (RT) | decrease | Triglycerides (TGC) | pre-conditioned older women | -2.0% vs -1.2% | improved | #6 |
higher protein (HP) intake associated with resistance training (RT) | decrease | total cholesterol (TC) | pre-conditioned older women | -2.8% vs +0.5% | improved | #7 |
higher protein (HP) intake associated with resistance training (RT) | decrease | low density lipoprotein/HDL ratio (LDL/HDL) | pre-conditioned older women | -11.5 vs -6.9% | improved | #8 |
higher protein (HP) intake associated with resistance training (RT) | decrease | C-reactive protein (CRP) | pre-conditioned older women | -8.6% vs -11.5% | improved | #9 |
higher protein (HP) intake associated with resistance training (RT) | no change | waist circumference | pre-conditioned older women | - | No effect was found | #10 |
Increased dietary protein intake, achieved by whey protein supplementation, when associated with RT | increase | LST | pre-conditioned older women | - | promotes greater gains | #11 |
Increased dietary protein intake, achieved by whey protein supplementation, when associated with RT | increase | VL | pre-conditioned older women | - | promotes greater gains | #12 |
Increased dietary protein intake, achieved by whey protein supplementation, when associated with RT | decrease | TC/HDL ratio | pre-conditioned older women | - | promotes a reduction | #13 |
OBJECTIVE: The aim of this study was to analyze the effects of higher protein (HP) intake associated with resistance training (RT) on parameters of cardiometabolic risk disease (CMR). METHODS: A randomized, double-blind and placebo-controlled design was conducted. Thirty-two pre-conditioned older women were randomized in two groups to receive 35 g of protein (high protein group - HP) or 35 g of placebo (low protein group - LP) after training sessions. The RT program was carried out over 12 weeks, 3 days per week and 3 sets of 8-12 repetitions. Body composition (whole-body dual-energy X-ray absorptiometry), blood samples, anthropometric measurements and dietary intake were performed at pre- and post-intervention. RESULTS: There was a significant group-by-time interaction (P < 0.05) for lean soft tissue (LST), total cholesterol/high density lipoprotein ratio (TC/HDL) and volume of load (VL), in which HP group presented greater improvements when compared to LP group (LST: +3.8% vs +2.0%; TC/HDL: -11.8% vs -2.9%; VL: 45.4% vs 35.4%). A time effect was found for HDL, LDL, Triglycerides (TGC), total cholesterol (TC), low density lipoprotein/HDL ratio (LDL/HDL) and C-reactive protein (CRP) (HDL: +6.7% vs +6.3%; LDL: -6.8% vs +0.9%; TGC: -2.0% vs -1.2%; TC: -2.8% vs +0.5%; LDL/HDL: -11.5 vs -6.9%; CRP: -8.6% vs -11.5%) in which both groups improved their scores without statistical differences between them. No effect was found for waist circumference. CONCLUSION: Increased dietary protein intake, achieved by whey protein supplementation, when associated with RT promotes greater gains on LST and VL, and a reduction on TC/HDL ratio in pre-conditioned older women.