Table 2.

Follow-up Data.

		First two weeks	Last two weeks	P-value
Average daily steps		4,952.6 ± 3,052.7	6,119.6 ± 3,776.2	<0.001
Average heart rate		73.1 ± 11.1	71.4 ± 10.6	ns
		Beginning of follow-up	End of follow-up	P-value
Left ventricular ejection fraction (%)		25.8 ± 6.6	37.5 ± 10.7	<0.001
Δ-Steps	1,167.1 ± 2,455.9
Δ-LVEF (%)	11.6 ± 10.6
Wearing Time (hours)	22.8 ± 2.1
Days carried	77.3 ± 44.6

Δ-Steps, Improvement of physical activity measured in daily steps; Δ-LVEF, Improvement of left ventricular ejection fraction.