Table 3.
Physiological data and energy expenditure during 2 h cycling following NZBC extract or placebo intake for 7 days
Condition | Time (min) | |||||||
---|---|---|---|---|---|---|---|---|
15 | 30 | 45 | 60 | 75 | 90 | 105 | 120 | |
VO2 (L min−1) | ||||||||
NZBC | 1.74 ± 0.22 | 1.73 ± 0.25 | 1.72 ± 0.25 | 1.73 ± 0.28 | 1.74 ± 0.27 | 1.75 ± 0.27 | 1.76 ± 0.28 | 1.77 ± 0.29 |
Placebo | 1.74 ± 0.24 | 1.72 ± 0.27 | 1.73 ± 0.28 | 1.74 ± 0.31 | 1.75 ± 0.29 | 1.75 ± 0.29 | 1.75 ± 0.31 | 1.77 ± 0.31 |
VCO2 (L.min−1)* | ||||||||
NZBC | 1.59 ± 0.19 | 1.54 ± 0.24 | 1.50 ± 0.24 | 1.49 ± 0.27 | 1.48 ± 0.25 | 1.47 ± 0.25 | 1.46 ± 0.26 | 1.46 ± 0.26 |
Placebo | 1.63 ± 0.23 | 1.56 ± 0.27 | 1.55 ± 0.29 | 1.54 ± 0.31 | 1.51 ± 0.28 | 1.52 ± 0.29 | 1.48 ± 0.31 | 1.48 ± 0.30 |
% VO2max | ||||||||
NZBC | 66.7 ± 7.4 | 66.1 ± 6.6 | 65.7 ± 5.1 | 66.2 ± 6.0 | 66.7 ± 6.7 | 66.9 ± 5.8 | 66.4 ± 4.4 | 67.6 ± 4.4 |
Placebo | 66.7 ± 7.3 | 65.8 ± 7.4 | 66.1 ± 7.1 | 66.2 ± 7.7 | 66.9 ± 7.0 | 66.8 ± 7.1 | 66.0 ± 5.7 | 66.8 ± 6.6 |
Heart rate (b min−1) | ||||||||
NZBC | 152 ± 17 | 153 ± 16 | 153 ± 16 | 153 ± 17 | 154 ± 15 | 154 ± 16 | 154 ± 16 | 156 ± 16 |
Placebo | 153 ± 17 | 154 ± 17 | 155 ± 16 | 155 ± 16 | 156 ± 16 | 157 ± 15 | 158 ± 16 | 159 ± 15 |
Energy expenditure (kJ min−1) | ||||||||
NZBC | 35.3 ± 4.4 | 34.9 ± 5.2 | 34.6 ± 5.2 | 34.8 ± 5.8 | 34.8 ± 5.6 | 34.9 ± 5.5 | 35.0 ± 5.7 | 35.3 ± 5.8 |
Placebo | 35.6 ± 4.8 | 34.9 ± 5.7 | 35.0 ± 5.8 | 35.0 ± 6.4 | 35.2 ± 5.9 | 35.2 ± 6.1 | 35.0 ± 6.4 | 35.3 ± 6.5 |
Values are means ± SD
*Main effect of time (P = 0.002)