Short-term effects of 448 kilohertz radiofrequency stimulation on supraspinatus tendon elasticity measured by quantitative ultrasound elastography in professional badminton players: a double-blinded randomized clinical trial

Figures & data

Figure 1. Supraspinatus tendon elasticity measurement by quantified elastography.

Figure 2. Flow diagram of participants.

Table 1. Baseline demographic characteristics.

	Intervention group (CRMR) (n = 19)	Control group (placebo CRMR) (n = 19)
Age (years), mean (SD)	41.6 (13.7)	43.8 (10.6)
Height (cm), mean (SD)	1.72 (0.8)	1.73 (0.8)
Weight (kg), mean (SD)	72.6 (12.1)	73.5 (11.3)
Supraspinatus tendon elasticity, mean (SD)	3.88 (0.47)	3.79 (0.57)

CRMR: capacitive resistive monopolar radiofrequency; SD: standard deviation.

Table 2. Between groups differences on supraspinatus tendon elasticity at baseline, after the intervention and at one week follow-up (95%CI).

	T0 (baseline)	T1 (immediately after the CRMR intervention)	T2 (one-week follow-up)
Supraspinatus tendon elasticity (mean)	0.09	–1.00	–0.64
	p=.59	p= <.001**	p= <.001**
	(–0.25; 0.44)^a	(–1.41; −0.59)^a	(–0.98; −0.31)^a
Cohen’s d	0.17	–1.62	–1.25
SE difference	0.17	0.20	0.16

** p<.001.

SE: size effect.

^a 95%CI.