| Study |
Protocol |
Participants |
Habitual Caffeine |
Dose |
Performance Increase |
| Astorino et al. |
4 sets of BP, SP at 70% 1 RM and , LP BR and 80% 1 RM
Number of reps performed |
14 resistance-trained men |
218mg per day with a range of 120-500 mg per day |
6 mg.kg.bw-1 |
Increase in LP reps |
| Duncan et al. |
RTF: BP, DL, PR, BS at 60% 1RM. |
13 resistance-trained men |
211 mg with
a range of 120–400mg per day. |
Energy drink: 179 mg caffeine with
vitamins B3, B6, B9, and B12;
tyrosine; taurine; malic acid; and glucuronolactone |
Increased combined RTF
Decreased RPE
Increased RTIME and RTIPE |
| Duncan et al. |
RTF: BP, DL, PR, BS at 60% 1RM. |
11 resistance
trained (9 males, 2 females) |
67.4 mg/day with a
range of 120-400 mg/day |
5 mg.kg.bw-1 |
Increase in combined RTF |
| Hudson et al. |
4 sets of LE, AC at predetermined 12 rep max.
Total reps performed. repetitions to failure RPE, Pain. |
15 males |
~100-400 mg per day |
6-6.4 mg.kg.bw-1 |
Increase in LE
Non Sig increase in AC |
| Richardson and Clarke |
RTF: BS, BP at 60% 1 RM. |
9 resistance trained males |
241±122 per day |
Coffee: 433mg (±40mg)
Decaf coffee: 2mg (±0mg)
Decaf with caffeine: 425mg (±39mg)
Caffeine: 425mg (±39mg) |
More RTF for Decaf with caffeine and Coffee than Caffeine and Decaf. |