Comparison of Efficiency of Interferential Current Application Methods in Chronic Neck Pain

Participants will undergo a total of 10 treatment sessions over two weeks, with one session per day, five days a week. Two-channel four vacuum electrodes will be placed on the neck so that the painful area remains in the middle. The vacuum electrodes will apply continuous vacuum mode for only 10 minutes without delivering interferential current. Following the sham vacuum therapy, a hot pack will be applied to the painful neck area for 20 minutes.

Participants will undergo a total of 10 treatment sessions over two weeks, with one session per day, five days a week. Two-channel four vacuum electrodes will be placed on the neck so that the painful area remains in the middle. Interferential current therapy with a 4000 Hz carrier frequency and 50 Hz amplitude-modulated frequency will be applied for 10 minutes using the vacuum electrodes. After the interferential current therapy, a hot pack will be applied to the painful neck area for 20 minutes.

Participants will undergo a total of 10 treatment sessions over two weeks, with one session per day, five days a week. Two-channel four carbon-silicon pad electrodes will be placed on the neck so that the painful area remains in the middle. Interferential current therapy with a 4000 Hz carrier frequency and 50 Hz amplitude-modulated frequency will be applied for 10 minutes using the carbon-silicon pad electrodes. Following the interferential current therapy, a hot pack will be applied to the painful neck area for 20 minutes.