TABLE 3.

Effects of suggestions with clinical context on respiratory muscle strength parameters.

Suggestions	MIP		MEP		PIF		PEF
	Mean ± SD	p	Mean ± SD	p	Mean ± SD	p	Mean ± SD	p *
Situation in the past
Negative past	97.4 ± 16.3	ns	98.3 ± 16.5	ns	98.6 ± 8.0	ns	96.1 ± 13.0	0.041
Positive past	104.5 ± 18.2	ns	101.6 ± 13.9	ns	102.4 ± 14.8	ns	102.6 ± 10.5	ns
Risk information for informed consent
Version A	102.0 ± 15.6	ns	95.6 ± 17.8	ns	96.9 ± 16.8	ns	99.0 ± 11.8	ns
Version B	102.3 ± 15.9	ns	99.4 ± 17.9	ns	100.6 ± 19.1	ns	99.4 ± 7.9	ns
Transport in strictly supine position	99.8 ± 13.4	ns	96.4 ± 18.4	ns	96.4 ± 14.9	ns	100.6 ± 10.0	ns

After the determination of the baseline, suggestions were presented followed by a new measurement. Mean and SD of relative values compared to baseline (in %) after suggestions are given.

*According to one sample T-test, results without significance are given as ns. MIP, maximal inspiratory pressure; MEP, maximal expiratory pressure; PIF, peak inspiratory flow; PEF, peak expiratory flow. Significant p-values are indicated in bold.