The improvement in balance might have been due to changes in the distance of cadence or step length on the affected side. Gait is a complex movement consisting of balance, coordination, proprioception, and integrated harmony between joints and muscles [24]. Ng and Hui-Chan [18] applied TENS on acupuncture points and reported improved gait speed and endurance. Chen [25] applied sensory electrical stimulation on the Achilles tendon and gastrocnemius 6 times per week for 1 month, and reported significantly increased gait speed in stroke patients.