. 2013 Mar 26;15(2):R46. doi: 10.1186/ar4205

Table 2.

Exercise tolerance and cardiorespiratory measurements before and after the exercise training

Variable	C-SLE trained (n = 10)	C-SLE non-trained (n = 9)	Control (n = 10)
Time-to-exhaustion, minutes
PRE	10.1 (2.2)^a	9.7 (1.6)^a	13.7 (2.7)^b
POST	12.8 (2.4)^b	10.1 (1.8)^a	---
Resting heart rate, bpm
PRE	102.6 (10.3)^a	106.1 (12.1)^a	90.5 (15.7)^b
POST	86.2 (13.8)^b	110.6 (8.4)^a	---
Peak heart rate, bpm
PRE	178.2 (18.3)^a	177.6 (17.4)^a	195.8 (8.9)^a
POST	183.6 (10.5)^a	178.1 (18.6)^a	---
Peak VO₂, ml/Kg/min
PRE	27.7 (6.1)^a	25.7 (3.1)^a	39.9 (7.3)^b
POST	31.8 (8.0)^b	25.8 (4.2)^a	---
Peak speed (Km/h)
PRE	4.4 (0.6)^a	4.2 (0.5)^a	5.4 (0.9)^b
POST	5.2 (0.8)^b	4.3 (0.5)^a	---
Chronotropic reserve, %
PRE	75.5 (18.7)^a	74.8 (17.3)^a	96.6 (8.2)^b
POST	87.1 (9.0)^b*	74.1 (18.9)^a	---
Heart rate, Δ%
Rest to VAT
PRE	29.8 (16.6)^a	25.3 (12.0)^a	60.0 (24.8)^b
POST	56.3 (18.7)^b	17.0 (9.5)^a	---
Rest to RCP
PRE	53.9 (13.7)^a	54.9 (24.9)^a	97.3 (35.9)^b
POST	97.4 (28.6)^b	42.8 (17.4)^a	---
Rest to Peak
PRE	75.3 (24.8)^a	68.9 (22.9)^a	122.6 (42.1)^b
POST	117.7 (34.3)^b	61.5 (16.6)^a	---
Heart rate recovery, ΔHRR
ΔHRR1
PRE	25.5 (14.9)^a	26.6 (10.0)^a	40.2 (6.9)^b
POST	41.5 (10.0)^b	26.3 (8.0)^a	---
ΔHRR2
PRE	36.6 (10.2)^a	35.6 (11.8)^a	57.8 (8.9)^b
POST	62.2 (13.7)^b	39.8 (9.7)^a	---

Data are expressed as means (SD) (mixed model for repeated measures). Relative change (Δ%) for heart rate was calculated for the intervals between rest to ventilator anaerobic threshold (VAT), rest to respiratory compensation point (RCP), and rest to peak of exercise. Absolute change (Δ) was used to calculate the difference between heart rate at peak exercise and at the first (ΔHRR1) and second minutes (ΔHRR2) after the exercise test. Means with different letters are significantly different from each other (P < 0.05, between- or within-group comparisons). *P = 0.06, within-group comparison. C-SLE, childhood-onset systemic lupus erythematosus; PRE, pre-intervention (baseline), POST, post-intervention; Peak, peak exercise; VO₂, oxygen consumption.