J Korean Phys Ther.  2020 Aug;32(4):198-202. 10.18857/jkpt.2020.32.4.198.

The Effect of Paraffin Treatment with Exercise on Muscle Strength and Fatigue of the Hand According to the Use of Smartphone

• Kim SH

• KMID: 2520068
• DOI: http://doi.org/10.18857/jkpt.2020.32.4.198

Abstract

Purpose
This study examined the effects of a paraffin treatment with exercise on the muscle strength and fatigue of the hand according to the use of smartphones.
Methods
The measurement subjects were 30 healthy males in their 20s who were divided randomly into the control and paraffin treatment groups. A typing exercise using a smartphone was performed. The pinch grip force was measured to evaluate the muscle strength of the thumb, and muscle fatigue analysis using electromyography was performed to analyze muscle fatigue.
Results
The functional changes to the arm and the fatigue of the hand through the use of a smartphone were examined to determine the effects of the paraffin treatment. The dominant hand-pinch grip force test did not show a significant difference, but the non-dominant hand-pinch grip force test showed a significant difference between the groups (p=0.030). In the dominant hand fatigue test, there was a significant difference between the groups (p=0.037). In the non-dominant hand, there was a significant difference between time (p=0.012) and the groups (p<0.001).
Conclusion
The effects of paraffin intervention on the hand muscle strength and fatigue due to repeated use of the smartphone were confirmed. These results can be used as a basis for clinical use and can be a guide for the correct use of smartphones, which are essential in modern life.

Keyword

Smartphone; Electromyography; Muscle fatigue; Paraffin treatment