BMC Pulmonary Medicine

Table 1 Spearman non-parametric correlation coefficients between physical activity levels and spirometry results in percentage of predicted value, overall and stratified by smoking status, Pneumolaus baseline (2014–2017) and follow-up (2018–2021), Lausanne, Switzerland

From: Physical activity and lung function association in a healthy community-dwelling European population

	All participants			Never or former smokers			Current smokers
	FEV₁% PV	FVC % PV	MMEF % PV	FEV₁% PV	FVC % PV	MMEF % PV	FEV₁% PV	FVC % PV	MMEF % PV
Baseline	N = 1910			N = 1604			N = 306
Inactivity	−0.106	−0.113	− 0.039	−0.108	− 0.123	−0.034	− 0.072	−0.055	− 0.021
Light PA	0.101	0.108	0.032	0.085	0.097	0.013	0.157	0.159	0.075
Moderate PA	0.106	0.118	0.033	0.078	0.098	0.006	0.193	0.195	0.097
Vigorous PA	0.132	0.137	0.059	0.109	0.123	0.031	0.206	0.192	0.135
Follow-up	N = 1174			N = 1022			N = 152
Inactivity	−0.057	−0.063	−0.013	−0.065	−0.074	−0.018	0.010	0.021	0.028
Light PA	0.101	0.134	−0.007	0.111	0.142	0.002	0.052	0.087	−0.064
Moderate PA	0.111	0.143	−0.001	0.124	0.157	0.003	0.030	0.047	−0.034
Vigorous PA	0.125	0.159	0.017	0.137	0.179	0.011	0.038	0.004	0.037

FEV₁ forced expired volume in 1 second, FVC forced vital capacity, MMEF maximal mid-expiratory flow, PA physical activity, PV predicted value. Results are expressed as Spearman rank correlation coefficients. Significant (p < 0.05) correlations are indicated in bold characters

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