HF	Heart failure
CR	Cardiac rehabilitation
6MWD	Six-minute walk distance
6MWT	Six-minute walk test
CAH	Critical access hospital
SCFA	Short-chain fatty acid
QoL	Quality of life
NYHA	New York Heart Association
BMI	Body Mass Index
HDL	High-density lipoprotein
LDL	Low-density lipoprotein
OTUs	Operational Taxonomic Units
PERMANOVA	Permutational Multivariate Analysis of Variance
PERDISP	Permutational Multivariate Analysis of Dispersion
ANOSIM	Analysis of similarities
PCoA	Principal coordinates analysis
LEfSe	Linear discriminant effect size
FDR	False Discovery Rate
RLE	Relative log expression
PCR	Polymerase chain reaction
DNA	Deoxyribonucleic acid
RNA	Ribonucleic acid
CTAB/SDS	Cetyltrimethylammonium bromide/Sodium dodecyl sulfate