Better pulmonary function is associated with greater handgrip strength in a healthy Chinese Han population

BMC Pulmonary Medicine

Table 4 Correlation coefficients between handgrip strength and parameters of pulmonary function stratified by sex

Parameters of Pulmonary Function	Males (n = 623)	Females (n = 896)	Total (n = 1519)
VC max	0.48^*	0.51^*	0.72^*
VC IN	0.47^*	0.50^*	0.71^*
FEV 3	0.48^*	0.50^*	0.70^*
FVC	0.49^*	0.50^*	0.69^*
FEV 2	0.48^*	0.52^*	0.69^*
FEV 1	0.48^*	0.46^*	0.65^*
VC EX	0.42^*	0.43^*	0.65^*
FEV 0.5	0.45^*	0.43^*	0.62^*
MEF 75	0.34^*	0.35^*	0.52^*
MVV	0.33^*	0.35^*	0.41^*
MEF 50	0.34^*	0.30^*	0.40^*
MEF 25	0.30^*	0.31^*	0.30^*

FEV 0.5/1/2/3: forced expiratory volume in 0.5/1/2/3 s; FVC forced vital capacity; VC IN inspiratory vital capacity; VC EX expiratory vital capacity; VC max maximum value of vital capacity; MEF 25/50/75 maximum expiratory flow rate at 25%/50%/75% vital capacity; MVV maximum ventilation volume. ^*p < 0.001 for the correlation coefficients listed. Spearman correlation coefficients were used to analyse MVV (with non-normal distribution) and MEF 25 (with non-normal distribution only when analysis was stratified by gender). Pearson’s correlation coefficients were used to analyse the normally distributed variables

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