Table 3.

Secondary outcome variables at baseline, Iso-time exercise and the end of exercise during the beetroot and placebo trials

	Beetroot	Placebo	P
Heart Rate, bpm
Rest	70 [62, 78]	69 [61, 77]	0.707
Iso-time	110 [97, 123]	112 [99, 124]	0.300
End Exercise	117 [100, 137]	123[103, 142]	0.475
Oxygen Consumption, ml*kg−1*min−1
Rest	4.1 [3.3, 4.8]	4.0 [3.4, 4.6]	0.925
*Iso-time	14.1 + 5.4	13.4 + 5.5	0.099
End Exercise	14.1 [11.8, 16.4]	14.4[12.4, 16.4]	0.436
Systolic Blood Pressure, mmHg
Rest	124.3 [115.2, 133.4]	132.5[121.7, 143.4]	0.019
Iso-time	160.1 [147.8, 172.5]	167.1 151.7, 182.4]	0.137
End Exercise	164.0 [147.5, 180.5]	170.4 [153.9, 186.9]	0.296
Diastolic Blood Pressure, mmHg
Rest	77.2 [71.8, 82.6]	80.9 [75.3, 86.6]	0.065
Iso-time	79.9 [72.8, 86.9]	86.3 [79.6, 92.9]	0.001
End Exercise	80.0 [72.9, 87.1]	85.6 [79.7, 91.5]	0.008
Arterial O2 Saturation, %
Rest	95.4 [94.4, 96.5]	95.4 [94.2, 96.7]	1.0
Iso-time	95.1 [93.9, 96.2]	95.1[94.0, 96.2]	0.895
End Exercise	95.2 [93.9, 96.5]	95.2 [94.1, 96.3]	1.0

^*Non-normally distributed variables. Normally distributed va ues are presented as means and [95% confidence intervals]. Non-normally distributed variables are presented as medians and interquartile ranges.