Effect on autonomic nervous activity of applying hot towels for 10 s to the back during bed baths

Table 2 Comparison of bed baths with AHT10s and CON: HRV, HR, BP (n = 43)

	Bed bath with AHT10s		CON		Main effect				Interaction type х time
	Bed bath with AHT10s		CON		Type		Time		Interaction type х time
	Pre	Post	Pre	Post	F (df)	P	F (df)	P	F (df)	P
HF (ms²)
Mean (SD)	567.3 (326.6)	569.3 (345.7)	536.7 (361.7)	600.8 (459.8)	< 0.01 (1,126)	.990	0.87 (1,126)	.353	0.77 (1,126)	.383
95% CI	462.9–675.7	462.9–675.7	425.4–648.0	459.3–742.3
LF/HF
Mean (SD)	1.9 (1.5)	2.6 (2.3)	2.5 (1.8)	2.5 (1.9)	1.38 (1,126)	.243	3.33 (1,126)	.070	1.91 (1,126)	.170
95% CI	1.5–2.4	1.9–3.3	1.9–3.0	2.0–3.1
HR (bpm)
Mean (SD)	68.9 (10.5)	68.3 (8.8)	68.3 (9.8)	68.0 (10.4)	1.05 (1, 126)	.308	0.51 (1, 126)	.475	0.07 (1, 126)	.785
95% CI	65.7–72.1	65.6–71.0	65.3–71.3	64.8–71.2
SBP (mmHg)
Mean (SD)	106.4 (9.6)	107.4 (10.3)	106.7 (10.3)	105.6 (11.5)	0.56 (1, 126)	.457	< 0.01 (1, 126)	.968	0.93 (1, 126)	.337
95% CI	103.5–109.4	104.3–110.6	103.5–109.9	102.0–109.1
DBP (mmHg)
Mean (SD)	63.7 (7.1)	62.9 (7.8)	64.0 (8.0)	63.8 (7.4)	1.23 (1, 126)	.271	0.83 (1, 126)	.365	0.14 (1, 126)	.705
95% CI	61.5–65.8	60.5–65.3	61.6–66.5	61.6–66.1

A mixed-linear model for two-way repeated-measures ANOVA, and a Bonferroni correction. AHT10s applying hot towels for 10 s to the skin, BP blood pressure, CI confidence interval, CON the bed bath with applying dry towel to the skin, DBP diastolic blood pressure, LF low frequency component (0.04–0.15 Hz), HF high-frequency component (0.15–0.40 Hz), HR heart rate, HRV heart rate variability, SD standard deviation, SBP systolic blood pressure. Pre, between T1 (5 min before intervention) and T2 (the beginning of the experiment): Post, between T6 (immediately after wiping the skin with the dry towel) and T10 (5 min after wiping the skin with the dry towel)

ISSN: 1880-6805