Stochastic Resonance Training Improves Balance and Musculoskeletal Well-Being in Office Workers: A Controlled Preventive Intervention Study

Table 3

Prediction of daily surefootedness, sense of balance, musculoskeletal well-being, and muscle relaxation in multilevel regression analyses.

	Musculoskeletal well-being & muscle relaxation		Surefootedness and sense of balance
	B	SE	B	SE
Constant	64.310	9.184	52.072	1.807
Sex	5.669	5.467	-1.019	1.059
BMI	-1.940^∗	0.735	0.104	0.143
Age	0.391	0.203	0.018	0.039
SR-WBV	3.574	5.713	-0.724	1.219
Day	0.020	0.133	0.017	0.037
Interaction Effects
Day X SR-WBV	0.519^∗	0.206	0.142^∗	0.057
Level 2 variance	325.959	64.043	11.246	2.386
Level 1 variance	283.758	13.720	22.398	1.082
IGLS	7931.824		5564.738

Note. n = 915 daily ratings reported by 61 participants across 28 days. B = fixed parameter estimates of unstandardized regression coefficients; SE = standard error in unstandardized regression coefficients estimation; significance levels were calculated by t-values (parameter estimate/SE) with j-p-1 degrees of freedom, where j is the number of units on level 2 and p is the number of explanatory variables. Sex (1 = m, 2 = f); SR-WBV = stochastic resonance whole-body vibration training (0 = control group, 1 = training group); day = day of training period (1-28).
< 0.05, < 0.01, < 0.001, and two-tailed.