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Table 3 Average performance, cardio-respiratory and perceived exertion data for initial 10-min split (0–10 min) during the 30-min TT

From: The effect of two β-alanine dosing strategies on 30-minute rowing performance: a randomized, controlled trial

  βA1 βA2 PL
Variable T1 T2 T3 T1 T2 T3 T1 T2 T3
Distance (m) 2426 ± 87 2503 ± 56# 2525 ± 61* 2483 ± 45 2481 ± 40 2544 ± 42b 2318 ± 89 2336 ± 71 2363 ± 74
Power (W) 185.3 ± 21.1 203.1 ± 15.5# 204.4 ± 16.4* 197.2 ± 10.6 197.9 ± 9.3 209.2 ± 9.2 159.8 ± 20.1 161.7 ± 15.5 165.7 ± 17.0
Power (W·kg− 1) 2.16 ± 0.19 2.38 ± 0.12# 2.41 ± 0.14* 2.47 ± 0.15 2.48 ± 0.14 2.62 ± 0.13 1.93 ± 0.22 1.94 ± 0.17 1.99 ± 0.19
HR (b·min− 1) 164 ± 4 171 ± 4 172 ± 3* 159 ± 5 165 ± 5 166 ± 4* 159 ± 7 161 ± 6 159 ± 6
RPE 6.1 ± 0.4 6.3 ± 0.2 6.1 ± 0.5 5.1 ± 0.6 5.1 ± 0.4 6.2 ± 0.5 4.4 ± 0.5 4.9 ± 0.6 5.0 ± 0.5
VE (L·min− 1) 78.6 ± 6.4 81.6 ± 2.8 84.0 ± 4.0 76.4 ± 2.7 77.2 ± 2.6 77.8 ± 2.2 71.8 ± 4.4 73.8 ± 4.4 72.5 ± 3.7
VO2 (L·min− 1) 3.03 ± 0.26 3.07 ± 0.16 3.23 ± 0.23 2.90 ± 0.15 3.16 ± 0.16 3.13 ± 0.17 2.65 ± 0.18 2.50 ± 0.21 2.47 ± 0.24
VCO2 (L·min− 1) 3.05 ± 0.26 3.04 ± 0.16 3.12 ± 0.20 3.13 ± 0.20 2.95 ± 0.15 3.18 ± 0.21 2.89 ± 0.27 2.76 ± 0.22 2.74 ± 0.19
RER 0.96 ± 0.02 0.91 ± 0.04 0.89 ± 0.05 0.93 ± 0.05 0.90 ± 0.04 0.82 ± 0.04 0.89 ± 0.03 0.91 ± 0.03 0.95 ± 0.02
  1. Data in Table 3 refers to the first 10-min split of the 30-min TT. Time points denoted by T1-T3. Abbreviations: HR heart rate, RPE rating of perceived exertion, VE minute ventilation, VO2 absolute oxygen uptake, VCO2 absolute carbon dioxide, RER respiratory exchange ratio. # = significantly different T1-T2 within group only (P < 0.03); * = significant difference within group T1-T3 (P < 0.05); b = significant difference T2-T3 within group only (P = 0.01)