Table 1.
Micronutrients and supplements dosage, sources, and benefits
Nutrient | Dosage | Best sources | Benefits | Strength of evidencea |
---|---|---|---|---|
Protein | 0.3 g/kg as soon as possible post-training | Leucine-rich complete proteins: whey and milk | Support muscle protein synthesis Support muscle repair and muscle remodeling |
Good |
0.3 g/kg/meal across 4–5 meals | Complete proteins: lean meats, poultry, fish, eggs, milk, yogurt, soy, tofu, quinoa | Good | ||
Carbohydrate | 1–1.2 g/kg within the first hour post-training | Quickly digested and absorbed: sports drinks, bars, shakes, white bread | Replenish glycogen Support immune function Reduce risk of overtraining |
Good |
5–7 g/kg/day spread throughout the day | Whole grains, potatoes, sweet potatoes, brown or wild rice, fruits, vegetables, dairy products | Good | ||
Fluid | 1.0–1.5 L of fluid for each 1-kg body mass lost | Chilled fluid with sodium (20–50 mmol/L) | Restore body fluid balance and plasma volume | Good |
Creatine monohydrate | 20 g/day for 5 days followed by 3–5 g/day to increase and maintain elevated muscle creatine Or 3–5 g/day for about 30 days to increase muscle creatine |
Meat, poultry, fish | Support training adaptations via increased expression of growth factors, reduced inflammation, and enhanced glycogen re-synthesis | Good |
n-3 PUFA | ~3 g/day of EPA/DHA | Cold water fatty fish (tuna, salmon), fish oils, krill oil | Reduce inflammation Support immune function Support muscle repair and remodeling when protein intake is insufficient |
Fair |
Vitamin D | RDA (adults) 600 IU/day Vitamin D status (blood 25OHD) 20–50 ng/L |
Sunlight, supplements, fortified foods, fatty fish, egg yolk | Support muscle repair and recovery | Fair |
Antioxidants | Individual antioxidant supplementation is not recommended Aim to consume a balanced diet containing a variety of fruits and vegetables |
Whole fruits and vegetables and 100% fruit and vegetable juices | Reduce inflammation | Fair |
Gelatin/collagen + vitamin C | ≥15 g of collagen hydrolysate with ≥50 mg of vitamin C delivered 1 h before training | Gelatin, vitamin C-rich foods (e.g., oranges, raspberries, grapefruit), dietary supplements | Promote collagen synthesis | Fair |
Curcumin | Dose dependent on bioavailability 0.4–5 g/day | Turmeric, dietary supplements | Reduce inflammation | Limited |
Bromelain | 900–1000 mg/day | Pineapple, dietary supplements | Reduce inflammation | Limited |
DHA docosahexaenoic acid, EPA eicosapentaenoic acid, n-3 PUFA omega-3 polyunsaturated fatty acids, RDA recommended dietary allowance, 25OHD 25-hydroxyvitamin D
aStrength of evidence conclusion statements are assigned a grade by the authors based on the systematic analysis and evaluation of the supporting research evidence. Grade I = good; grade II = fair; grade III = limited; grade IV = expert opinion only; and grade V = not assignable (because there is no evidence to support or refute the conclusion). See grade definitions at http://www.andevidencelibrary.com/