Table 1 Selected responses of the age-group triathletes to RBR and RBR (mean ± followed by the 95% confidence limits)

Variable	RBR1 (95% CI)	RBR2 (95% CI)	Mean diff (95% CI)
VO2 R1 (l· min-1)	3.67 ± 0.5 (3.25 - 4.09)	3.79 ± 0.34 (3.51 - 4.07)	0.12 ± 0.30 (0.36 - 0.25)
HR R1 (beats· min-1)	166 ± 10 (158 - 174)	164 ± 13 (153 - 175)	-1.63 ± 5.71 (-6.40 - 3.14)
[BLA] post R1 (mM)	4.03 ± 1.81a (2.52 - 5.54)	3.89 ± 2.31 (1.96 - 5.82)	0.14 ± 1.47 (-1.32 to 1.61)
Bmax Abs VO2peak (l· min-1)	4.19 ± 0.40 (3.86 - 4.52)	4.19 ± 0.49 (3.78 - 4.60)	0.01 ± 0.16 (-0.12 - 0.14)
Bmax Wpeak (W)	332.4 ± 33.6 (304.31 - 360.49)	332.9 ± 34.8 (303.81 - 361.99)	0.50 ± 11.25 (9.90 - 9.40)
Bmax HR peak (beats· min-1)	182 ± 9 (174 - 189)	181 ± 9 (174 - 189)	-0.25 ± 2.49 (1.83 - 2.08)
[BLA] post Bmax (mM)	12.9 ± 3.1 (10.31 - 15.49)	12.9 ± 2.4 (10.89 - 14.91)	-0.02 ± 1.19 (0.98 - 1.00)
Bsubmax HR (beats· min-1)	160 ± 12 (150 - 170)	160 ± 13 (149 - 171)	0.13 ± 3.76 (-3.01 - 3.3)
VO2 Bsubmax (l· min-1)	3.21 ± 0.030 (3.18 - 3.24)	3.21 ± 0.028 (3.19 - 3.23)	0.00 ± 0.13 (0.10 - 0.11)
[BLA] post Bsubmax (mM)	7.47 ± 3.86 (4.24 - 10.70)	7.16 ± 3.46 (4.27 - 10.05)	0.31 ± 2.81 (-2.50 to 3.12)
VO2R2 (l· min-1)	3.68 ± 0.41 (3.34 - 4.02)	3.72 ± 0.38 (3.40 - 4.04)	0.04 ± 0.34 (4.21 - 3.77)
[BLA] post R2	6.83 ± 3.39a (4.00 - 9.66)	6.76 ± 2.90 (4.34 - 9.18)	0.07 ± 5.63 (-5.56 to 5.70)
∆HRR1-R 2 (beats· min-1)	8.6 ± 5.5 (4.0 - 13.2)	10.0 ± 6.7 (4.4 - 15.6)	1.4 ± 4.9 (-2.7 - 5.5)
∆[BLA]R1-R 2	2.80 ± 3.42 (-0.06 - 5.66)	2.86 ± 1.31 (1.76 - 3.96)	0.06 ± 2.69 (-2.19 - 2.31)
∆VO2R1-R 2 (l· min-1)	0.0083 ± 0.19 (-0.15-0.17)	-0.07 ± 0.18 (-0.22 - 0.08)	-0.79 ± 0.16 (-0.22 - 0.06)

VO oxygen output, R first run section of RBR, HR heart rate, [BLA] blood lactate concentration, B maximal incremental bike test section of RBR, Abs VO absolute peak oxygen output (l· min), W peak power output, B submaximal cycle section of RBR, R second run section of RBR, ∆HR change in HR between R and R of RBR ∆ [BLA] change in blood lactate concentration between R and R of RBR, ∆VO change in VO between R and R of RBR No difference between matched variables (in the same row) was found between RBR and RBR at the 95% confidence level.