Table 4.
Muscle metabolites (mmol kg−1 DW) and pH before (Pre) and immediately after (Post) repeated‐sprint (RS), speed endurance (SE) and continuous moderate‐intensity (CM) exercise
| Pre | Post | Δ | |||||||
|---|---|---|---|---|---|---|---|---|---|
| RS | SE | CM | RS | SE | CM | RS | SE | CM | |
| ATP | 25.8 ± 1.8 | 25.1 ± 1.5 | 24.4 ± 2.3 | 19.2 ± 1.8*† | 16.7 ± 1.4*† | 21.9 ± 2.0 | −6.6 ± 1.9† | −8.4 ± 1.5† | −2.6 ± 0.5 |
| PCr | 79.8 ± 5.8 | 79.8 ± 3.0 | 79.0 ± 4.7 | 38.4 ± 5.3*† | 39.3 ± 6.9*† | 62.4 ± 4.5* | −41.4 ± 7.7† | −40.5 ± 6.9† | −16.7 ± 3.5 |
| Lactate | 5.8 ± 1.1 | 5.5 ± 0.7 | 5.0 ± 0.5 | 41.4 ± 7.2*† | 79.9 ± 8.4*§† | 11.4 ± 1.9* | 35.6 ± 6.4† | 74.4 ± 8.5§† | 6.4 ± 1.7 |
| Glycogen | 783 ± 39 | 722 ± 45 | 708 ± 48 | 652 ± 35*† | 576 ± 38*† | 513 ± 49* | −130 ± 29 | −146 ± 19 | −194 ± 26 |
| pH | 7.26 ± 0.02 | 7.25 ± 0.02 | 7.27 ± 0.02 | 7.02 ± 0.05*† | 6.74 ± 0.03*§† | 7.25 ± 0.04 | (47 ± 10) × 10−7 † | (132 ± 16) × 10−7 § † | (5 ± 5) × 10−7 |
Values are means ± SEM (n = 12). Δ, difference between Post and Pre. Differences in pH are presented as changes in [H+], *Significantly different from Pre (P < 0.05, †Significantly different from CM (P < 0.05), §Significantly different from RS (P < 0.05).