. 2017 Mar 12;2017:5420840. doi: 10.1155/2017/5420840

Table 1.

Characteristics of included studies.

Study	Country	Disease	Patient number		Mean age, year		Mode	Exercise program		Exercise duration (weeks)
Study	Country	Disease	INTERVAL	CONTINUOUS	INTERVAL	CONTINUOUS	Mode	INTERVAL	CONTINUOUS	Exercise duration (weeks)
Angadi et al., 2015	US	CHF	9	6	69	71.5	TM	3 d/wk, 4 × 4 mins @ 85%–90% of peak HR, 3 min recovery	3 d/wk, 30 mins @ 70% of peak HR	4

Benda et al., 2015	Netherlands	CHF	10	10	63	64	Cycling	2 d/wk, 3.5 × 1 min @ 90%, of maximal workload, 10 periods	2 d/wk, 30 min @ 60%–75% of maximal workload	12

Cardozo et al., 2015	Brazil	CAD	23	24	56	62	TM	3 d/wk, 2 mins @ 90% of peak HR 2 min recovery @ 60% peak HR	3 d/wk, 30 mins @ 70%–75% of peak HR	16

Conraads et al., 2015	Belgium	CAD	85	89	57	59.9	Cycling	3 d/wk, 4 × 4 mins @ 90–95% of peak HR, 3 min recovery. 38 min total	3 d/wk, 37 mins @ 70–75% of peak HR. 47 min total	12

Currie et al., 2013	Canada	CAD	11	11	62	68	Cycling	2 d/wk, 10 × 1 min @ 80%–104% PPO, 1 min recovery@10% PPO	2 d/wk, 30–50 min @ 51%–65% PPO	12

Dimopoulos et al., 2006	Greece	CHF	10	14	59.2	61.5	Cycling	3 d/wk, 30 s@100% of WRp, 30 s rest, 40 min total	3 d/wk, 40 mins @ 50% of WRp	12 (36 sessions)

Freyssin et al., 2012	France	CHF	12	14	54	55	Cycling	5 d/wk, 12 × 30 s @ 50% (4 wks) + 80% (4 wks) of maximum power, 1 min recovery @ rest	5 d/wk, 45 mins @ HRVT1	8

Fu et al., 2013	Taiwan	CHF	14	13	67.5	66.3	Cycling	3 d/wk, 5 × 3 mins @ 80% of peak VO₂ 3 min recovery @ 40% peak VO₂	3 d/wk, 60 mins @ 60% of peak VO₂	12

Iellamo et al., 2013	Italy	CHF	8	8	62.2	62.6	TM	2–5 d/wk, 2–4 × 4 mins @ 75%–80% of HHR 3 min recovery @ 45%–50% of HHR	2–5 d/wk, 30–45 mins @ 45%–60% of HHR	12

Jaureguizar et al., 2016	Spain	CAD	36	36	58	58	TM	(15–30) × 40 s @ the first (second) steep ramp test	15–30 mins @ VT1	8

Keteyian et al., 2014	US	CAD	15	13	60	58	TM	3 d/wk, 4 × 4 mins @ 80%–90% of HRR, 3 min recovery @ 60%–70% of HRR	3 d/wk, 30 mins @ 60%–80% of HRR	10

Kim et al., 2015	Republic of Korea	CAD	14	14	57	60.2	TM walking	3 d/wk, 4 × 4 mins @ 85%–95% of HRR, 3 min recovery @ 450%–70% of HRR. 5 min total	3 d/wk, 25 mins @ 70%–85% of HRR. 45 min total	6

Koufaki et al., 2014	UK	CHF	9	8	59.8	59.7	Cycling	3 d/wk, 2 × 10 min @ 100% of PPO, 5 min recovery @ 20%–30% of PPO	3 d/wk, 1–4 months: 3 × (7–10) mins; 5-6 months: 40 mins; @ 40%–60% of peak VO₂	24

Madssen et al., 2014	Norway	CAD	15	21	55.5	60.5	TM	3 d/wk, 34 × 4 mins @ 85%–95% of peak HR, 3 min recovery @ 70% of peak HR	3 d/wk, 46 mins @ 70% of peak HR	12

Moholdt et al., 2009	Norway	CAD	28	31	60.2	62	TM	5 d/wk, 4 × 4 mins @ 90% of peak HR, 3 min recovery @ 70% peak HR, 40 min total	5 d/wk, 46 mins @ 70% of peak HR	4

Rocco et al., 2012^∗ Prado et al., 2016^∗	Brazil	CAD	17	20	56.5	62.5	TM	3 d/wk, 7 × 3 mins @ RCP, 7 × 3 min @ VAT. 42 min total	3 d/wk, 50 mins @ VAT	12

Roditis et al., 2007	Greece	CHF	11	10	63	61	Cycling	3 d/wk, 30 × 30 s @ 100% of WRp, 40 min total	3 d/wk, 40 mins @ 50% of WRp	12 (36 sessions)

Rognmo et al., 2004^∗ Amundsen et al., 2008^∗	Norway	CAD	8	9	62.9	61.2	TM walking	3 d/wk, 4 × 4 mins @ 85%–95% of peak HR, 3 min recovery. 33 min total	3 d/wk, 41 mins @ 50%–60% of peak VO₂	10

Ulbrich et al., 2016	Brazil	CHF	12	10	53.1	54	TM	3 d/wk, (4–6) × 3 mins @ 95% of peak HR, 3 min recovery @ 70% peak HR. 60 min total	3 d/wk, 30 mins @ 75% of peak HR. 60 min total	12

Warburton et al., 2005	Canada	CAD	7	7	55	57	TM	2 d/wk, 2 mins @ 90% of VO₂ reserve, 2 min recovery. 30 min total	2 d/wk, 30 mins @ 65% of VO₂ reserve	16

Wisløff et al., 2007	Norway	CHF	9	9	76.5	74.4	TM	3 d/wk, 4 mins @ 90%–95% of peak HR, 3 min recovery @ 50%–70% peak HR. 38 min total	3 d/wk, 47 mins @ 70%–75% of peak HR	12

INTERVAL, high-intensity interval training; CONTINUOUS, moderate-intensity continuous training; CHF, chronic heart failure; CAD, coronary artery disease; TM, treadmill; HR, heart rate; PPO, peak power output; HRR, heart rate reserve. WRp, 100% peak work rate. VAT, ventilatory anaerobic threshold. VO₂, oxygen uptake. ^∗means two articles on the same study.