Table 2.

Relationship between the independent variable (work vibration) and dependent variables (workload, low frequency/high frequency, and multiscale entropy).

Independent variables			Dependent variables
			%HRRa						LFb/HFc							MSEd
			βe		SE		P value		β		SE		P value		β			SE		P value
Work vibration
	Awf	–0.002		0.039		.96		0.0238		0.0093		.01		–0.031			0.0175		.37
	VDVg	0.0006		0.0003		.06		0.000		0.0001		.82		–0.0001			0.0001		.24
	MSDVzh	0.515		0.294		.09		0.0983		0.0693		.16		–0.156			0.130		.08

^aHRR: heart rate reserve.

^bLF: low frequency.

^cHF: high frequency.

^dMSE: multiscale entropy.

^eβ: beta coefficient.

^fAw: vibration indices.

^gVDV: vibration doses value.

^hMSDV_z: motion sickness dose value.