Cardiology Research and Practice

Research Article

Effectiveness and Safety of Four Aerobic Exercise Intensity Prescription Techniques in Rehabilitation Training for Patients with Coronary Heart Disease

Table 4

The main outcome indicators of CPET.


	All Patients (n = 324)		Low-risk (n = 15)		Moderate-risk (n = 77)		High-risk (n = 232)		^#	^a	^b	^c
	No. of patients (%)	Mean (SD)	No. of patients (%)	Mean (SD)	No. of patients (%)	Mean (SD)	No. of patients (%)	Mean (SD)	^#	^a	^b	^c

HRAT, bpm	311	98 (13.0)	15	103 (12.7)	77	99 (11.8)	219	97 (13.3)	0.19	0.59	0.28	0.58
ATMETs, METs	311	3.2 (0.7)	15	4.3 (0.7)	77	3.6 (0.6)	219	3.0 (0.7)	0.00	0.00	0.00	0.00
VO2AT, ml/kg/min	311	11.3 (2.5)	15	15.2 (2.3)	77	12.6 (2.0)	219	10.6 (2.3)	0.00	0.00	0.00	0.00
VO2AT/pred%, %	311	43.1 (13.6)	15	50.9 (13.3)	77	46.6 (10.2)	219	41.4 (14.3)	0.00	0.53	0.03	0.01
VO2peak, ml/kg/min	324	17.8 (5.3)	15	28.3 (2.6)	77	21.2 (2.8)	232	16.0 (4.7)	0.00	0.00	0.00	0.00
VO2peak/pred%, %	324	69.9 (17.4)	15	94.3 (18.8)	77	78.4 (13.3)	232	65.6 (16.2)	0.00	0.00	0.00	0.00
HRpeak, bpm	324	125 (20.9)	15	147 (14.8)	77	132 (15.9)	232	121 (21.1)	0.00	0.01	0.00	0.00
HRmax, bpm	324	157 (10.4)	15	163 (6.7)	77	160 (10.3)	232	156 (10.4)	0.00	0.65	0.06	0.02
RHR, bpm	324	73 (10.5)	15	71 (13.0)	77	73 (9.7)	232	73 (10.6)	0.62	0.59	0.28	0.58
Complex VA in test	27 (8.3)		0		0		27 (11.6)		0.00	-	0.38	0.00
ECG positive reaction	28 (8.6)		0		0		28 (12.1)		0.00	-	0.23	0.00
ECG suspicious positive reaction	42 (13.0)		0		13 (16.9)		29 (12.5)		0.19	0.12	0.23	0.33
With Normal VO2AT	228 (70.4)		12 (80)		59 (76.6)		157 (67.7)		0.23	1.00	0.48	0.14
With Normal VO2peak	69 (21.3)		12 (80)		26 (33.8)		31 (13.4)		0.00	0.00	0.00	0.00
With Roughly normal VO2peak	27 (8.3)		1 (6.7)		7 (9.1)		19 (8.2)		0.94	1.00	1.00	0.81

^#, value of comparison among three groups; ^a, value of comparison between low-risk and moderate-risk group; ^b, value of comparison between low-risk and high-risk group; ^c, value of comparison between moderate-risk and high-risk group. HRAT, heart rate at anaerobic threshold; ATMETS, metabolic equivalent at anaerobic threshold; VO2AT, oxygen uptake at anaerobic threshold; Pred, predicted value; VO2peak, oxygen uptake at peak; HR peak, heart rate at peak; HRmax, age-predicted maximum-heart-rate; RHR, resting heart rate; VA, ventricular arrhythmia; ECG, electrocardiography.