From: Effects of caffeine intake on muscle strength and power: a systematic review and meta-analysis
Study | Study design | Participants age (years) | Sample size and sex | Resistance/sport training experience | Habitual caffeine intake (mg.d−1)a | Caffeine form | Caffeine dosage (mg.kg−1) | Timing of caffeine ingestion before the experimental session(s) [minutes]) | Exercise(s) used for the muscle strength/power assessment | PEDro score |
---|---|---|---|---|---|---|---|---|---|---|
Ali et al. [7] 2016 | RDB | 24 ± 4 | 10 females | Athletes | 0–300 | Capsule | 6 | 60 | CMJ | 10 |
Andrade-Souza et al. [22] 2014 | RDB | 25 ± 3 | 11 males | Athletes | N/A | Capsule | 6 | 60 | CMJ | 8 |
Arazi et al. [12] 2016a | RDB | 17 ± 1 | 10 females | Untrained/ Athletes | < 60 | Capsule | 2 and 5 | 60 | LP and ST | 10 |
Arazi et al. [11] 2016b | RDB | 21 ± 4 | 15 males | Untrained | N/A | Capsule | 6 | 60 | BP and LP | 10 |
Astorino et al. [3] 2008 | RDB | 23 ± 4 | 22 males | Trained | 110 ± 152 | Capsule | 6 | 60 | BP and LP | 10 |
Bloms et al. [8] 2016 | RSB | 20 ± 1 | 9 females | Athletes | N/A | Capsule | 5 | 60 | CMJ and SJ | 8 |
21 ± 2 | 16 males | |||||||||
Brooks et al. [13] 2015 | RDB | 21 ± 3 | 14 males | Untrained | N/A | Capsule | 5 | 60 | MBS | 10 |
Clarke et al. [23] 2016 | RDB | 21 ± 2 | 8 males | Athletes | N/A | Capsule | 3 | 60 and during the testing sessions | CMJ | 10 |
Diaz-Lara et al. [15] 2016 | RDB | 29 ± 3 | 14 males | Trained/ Athletes | < 60 | Capsule | 3 | 60 | BP and CMJ | 10 |
Foskett et al. [24] 2009 | RDB | 24 ± 5 | 12 males | Athletes | 0–350 | Liquid | 6 | 60 | CMJ | 10 |
Gant et al. [25] 2010 | RDB | 21 ± 3 | 15 males | Athletes | N/A | Liquid | 260 (fixed) 3.7 on average | 60 and during the testing sessions | CMJ | 10 |
Gauvin [26] 2016 | RDB | 22 ± 2 | 23 males | Untrained/ Non-athletes | < 200 per week | Capsule | 7 | 60 | CMJ | 9 |
Goldstein et al. [5] 2010 | RDB | 25 ± 7 | 15 females | Trained | < 250 (n = 8) > 250 (n = 7) | Liquid | 6 | 60 | BP | 10 |
Grgic et al. [4] 2017 | RDB | 26 ± 6 | 17 males | Trained/ Non-athletes | 58 ± 92 | Liquid | 6 | 60 | BP, BBS and ST | 9 |
Martin [16] 2015 | RDB | 20 ± 1 | 12 males | Trained | N/A | Gel | 75 (fixed) - 0.9 on average | 60 | BP and BBS | 10 |
Sabblah et al. [14] 2015 | RSB | 24 ± 3 | 7 females | Trained | N/A | Liquid | 5 | 60 | BP and MBS | 8 |
28 ± 6 | 10 males | |||||||||
Williams et al. [6] 2008 | RDB | 26 ± 4 | 9 males | Trained | ‘Low’ (no exact values) | Capsule | 300 (fixed) - 3.6 on average | 45 | BP and LPD | 10 |