Fig 1.
Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flow diagram.
Fig 2.
Risk of bias summary.
Table 1.
General characteristics of included studies.
Table 2.
Intervention characteristics of HIIT versus MICT in included studies.
Fig 3.
Peak VO2 in HF.
Fig 4.
(a) Subgroup analysis of TET of HIIT for HF in Peak VO2; (b) sensitive analysis.
Fig 5.
(a) Subgroup analysis of TET of MICT for HF in Peak VO2; (b) sensitive analysis.
Fig 6.
Subgroup analysis of disease categories of HFrEF and HFpEF in Peak VO2.
Fig 7.
Bias of publication.