Energy balance
In strength-trained individuals, acute carbohydrate intake does not improve resistance training performance (repetitions to failure or total volume) when compared to a fed state with a 2-5 hour post-prandial window, provided the workout volume is moderate (≤10 sets per muscle group).
If you eat a normal meal 2-5 hours before lifting, you do not need to force-feed yourself carbohydrates right before training to get better reps or strength. Your muscles have enough glycogen. Save the carbs for post-workout or general daily intake. If you train fasted or do extremely high volume (>10 sets/muscle), then carbs may help, but for standard sessions, don't stress about pre-workout carbs.
Carbohydrate intake per se is unlikely to strength training performance in a fed state in workouts consisting of up to 10 sets per muscle group.
Why this rating
Based on a systematic review of 19 acute studies, though many had methodological limitations (e.g., non-isocaloric controls).
Source
The Effect of Carbohydrate Intake on Strength and Resistance Training Performance: A Systematic Review
Menno Henselmans et al. · Nutrients · 2022
DOI 10.3390/nu14040856
More from this paper
- Long-term carbohydrate manipulation (weeks to months) does not influence strength gains or hypertrophy in strength-trained individuals, provided total caloric and protein intake are adequate.Good
- High-volume resistance training (>10 sets per muscle group) performed in a fasted state may benefit from acute carbohydrate supplementation compared to fasting or non-caloric placebo, likely due to glycogen sparing effects.Moderate
Related findings · Energy balance
- Achieving a total body weight loss of 10-15% (or >10-15 kg) through Total Diet Replacement (TDR) induces remission of Type 2 Diabetes in individuals with short-duration disease.Strong
- Bariatric surgery is superior to medical management alone for inducing significant long-term weight loss, remission of type 2 diabetes, and reduction in mortality for patients with BMI ≥ 40 or ≥ 35 with comorbidities.Strong
- Achieving type 2 diabetes remission requires significant weight loss (≥15 kg) via major caloric restriction, independent of macronutrient composition.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →