Table 1 Locations of acupoints for specific acupoints group and non-specific acupoints group

Specific acupoints

Xinshu (BL15)

In the upper back region, at the same level as the inferior border of the spinous process of the fifth thoracic vertebra (T5), 1.5 cun^a lateral to the posterior median line.

Neiguan (PC6)

On the anterior aspect of the forearm, between the tendons of the palmaris longus and the flexor carpi radialis, 2 cun proximal to the palmar wrist crease.

Shenmen (HT7)

On the anteromedial aspect of the wrist, radial to the flexor carpi ulnaris tendon, on the palmar wrist crease.

Non-specific acupoints

Pohu (BL42)

In the upper back region, at the same level as the inferior border of the spinous process of the third thoracic vertebra (T3), 3 cun lateral to the posterior median line.

Tianquan (PC2)

On the anterior aspect of the arm, between the long head and short head of the biceps brachii muscle, 2 cun distal to the anterior axillary fold.

Qingling (HT2)

On the medial aspect of the arm, just medial to the biceps brachii muscle, 3 cun superior to the cubital crease.