AC	Acupuncture treatment
ANS	Autonomic nervous system
ASDNN	Average standard deviation of all 5-min R-R intervals
BCS	Body condition score
BHT	Butylated hydroxytoluene
bpm	Beats per minute
BW	Body weight
COPD	Chronic obstructive pulmonary disease
EA	Electroacupuncture
ECG	Electrocardiography
H3PO4	Phosphoric acid
HF	High frequency
HRV	Heart rate variability
KH2PO4	Potassium dihydrogen phosphate
LF	Low frequency
LF/HF	Low frequency per high frequency
6MWT	Six-minute walk test
MDA	Malondialdehyde
meanNN	Average NN intervals
mV	Millivolt
NAC	No acupuncture treatment
nNOS	Neuronal nitric oxide synthase
pNN50	Percentage of successive NN intervals > 50 ms
RBC	Red blood cell
rMSSD	Root mean square of the sum of the squares of differences between adjacent NN intervals
SDANN	Standard deviation of the averages of NN intervals in 5-min
SDNN	Standard deviation of all NN intervals
TBA	Thiobarbituric acid
TBARS	Thiobarbituric acid reactive substance
TCA	Trichloroacetic acid
TCVM	Traditional Chinese veterinary medicine
TP	Total power
ULF	Ultra-low frequency
VLF	Very low frequency
VVTI	Vasovagal tonus index