Daily chocolate milk consumption does not enhance the effect of resistance training in young and old men: a randomized controlled trial.
Study Goal
The researchers aimed to determine whether chocolate milk supplementation enhances strength and muscle hypertrophy following resistance training in older and younger men.
Results Summary
Resistance training increased strength in both age groups, but chocolate milk supplementation did not enhance skeletal muscle hypertrophy or strength gains. Type I muscle fiber area increased with training, while Type II fiber area increased only in young men, with no effect from supplementation.
Population
Older and younger men undergoing resistance training.
Effective Dosage
500 mL of chocolate milk daily.
Duration
12 weeks.
Interactions
None mentioned.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
resistance training | increase | strength | older and younger men | - | increased | #1 |
chocolate milk | no change | strength | older and younger men | - | no supplementation effect | #2 |
resistance training | increase | Type I muscle fibre area | older and younger men | - | increased | #3 |
chocolate milk | no change | Type I muscle fibre area | older and younger men | - | no effect | #4 |
resistance training | increase | Type II fibre area | young men | - | increased | #5 |
chocolate milk | no change | Type II fibre area | young men | - | no supplementation effect | #6 |
chocolate milk | no change | skeletal muscle hypertrophy | - | - | did not enhance | #7 |
Older and younger men completed 12 weeks of resistance training and ingested either 500 mL of chocolate milk or placebo daily. Training increased strength in both age groups (p < 0.05), with no supplementation effect. Type I muscle fibre area increased with training (p = 0.008) with no effect of age or supplementation. Type II fibre area increased (p = 0.014) in young men only with no supplementation effect. Chocolate milk did not enhance skeletal muscle hypertrophy following training.