Table 2.
A summary of the results of studies investigating the influence of 0.3 g kg−1 sodium bicarbonate (NaHCO3) supplementation on whole-body and isolated muscle incremental exercise to volitional exhaustion
| Study | Whole-body or isolated muscle | Incremental task | Performance effect |
|---|---|---|---|
| Raymer et al. ‘04 [60] | Isolated (forearm) | 1:1 contraction-relaxation cycle; initial resistance 1.0 kg then increased 0.22 kg min−1 | ~12 % improvement |
| Sostaric et al. ‘05 [65] | Isolated (concentric finger flexion) | 30 rep min−1; initial resistance 2.6 ± 0.22 W then increased 0.17 W min−1 | ~25 % improvement |
| Poulus et al. ‘74 [74] | Whole-body (cycling) | Fixed cadence with 10 W min−1 increased until volitional exhaustion) | No effect |
| Jones et al. ‘77 [32] | Whole-body (cycling) | 20 min at power output ~33 % VO2max, then 20 min at 66 % VO2max, then 95 % VO2max to volitional exhaustion | ~40 % improvement |
| Sutton et al. ‘81 [33] | Whole-body (cycling) | 20 min at power output ~33 % VO2max, then 20 min at 66 % VO2max, then 95 % VO2max to volitional exhaustion | ~30 % improvement |
| Kowalchuk et al. ‘84 [35] | Whole-body (cycling) | Increased 16 W min−1 at 60 rpm | No effect |
| Housh et al. ‘91 [75] | Whole-body (cycling) | Continuous (2-min stages) physical work capacity test (PWCFT) starting at 60 W to volitional exhaustion | No effect |
All values represented as having an improvement (%) were significantly different from control or placebo (p < 0.05)