Is daily physical activity affected by dynamic hyperinflation in adults with cystic fibrosis?

BMC Pulmonary Medicine

Table 4 Independent predictors of physical activity level in a multivariate linear regression analysis

Model	Dependent	Predictors	Unstandardized coefficients		Standardized coefficients	95% CI	p	R²
Model	Dependent	Predictors	T	SE	β	95% CI	p	R²
1	Total Energy Expenditure	(Constant)	1582.144	302.285		966.334 to 2197.955	< 0.001
		Gender	450.965	184.121	0.412	75.877 to 826.054	0.020
		V’O2 peak	0.450	0.200	0.378	0.042 to 0.857	0.032
								52.9%
2	Vigorous PA	(Constant)	0.091	0.523		−0.973 to 1.155	0.863
	Vigorous PA	Gender	3.040	0.856	0.526	1.297 to 4.782	0.001
								27.7%
3	Moderate + Vigorous PA	(Constant)	−11.567	11.908		−35.797 to 12.663	0.338
	Moderate + Vigorous PA	VˈO2 peak	0.018	0.007	0.418	0.004 to 0.032	0.013
								17.5%

Definition of abbreviations: CF Cystic Fibrosis, V’O₂ oxygen uptake, PA physical activity, CI confidence interval. For every model: included independent variables were: gender (male), V’O2 peak (ml∙min⁻¹), EELVΔ (l) and EELVΔ (% of TLC)
For every model: EELVΔ (l) and EELVΔ (% of TLC) were discarded as not significant predictors. For model 2 and 3: V’O2 peak (ml∙min^− 1) and gender (male) were discarded as not significant predictors, respectively

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