Effects of Different Test Positions on Quantitative Muscle Strength of Wrist and Finger Flexor Muscle Groups and Its Standardization
10.12116/j.issn.1004-5619.2023.230501
- VernacularTitle:不同测试体位对屈腕、屈指肌群定量肌力的影响及其标准化
- Author:
Ze-Ren YANG
1
,
2
;
Dong GAO
;
Qing XIA
;
Dan RAN
;
Yan-Liang SHENG
;
Wen-Tao XIA
Author Information
1. 佳木斯大学基础医学院 微生态-免疫调节网络与相关疾病重点实验室,黑龙江 佳木斯 154000
2. 司法鉴定科学研究院 上海市法医学重点实验室 司法部司法鉴定重点实验室 上海市司法鉴定专业技术服务平台,上海 200063
- Keywords:
forensic medicine;
muscle strength;
quantitative muscle strength;
test position;
finger flexion;
wrist joint
- From:
Journal of Forensic Medicine
2024;40(3):237-244,253
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effects of different test positions on quantitative muscle strength of wrist and finger flexor muscle groups and to establish a standardized muscle strength test protocol for each muscle group.Methods Forty healthy subjects (12 males and 28 females) were recruited.A portable digital quantitative muscle strength tester,Micro FET2TM,was used to measure the flexor muscle strength of each finger and the wrist joint at the 30° extension,0° neutral,and 30° flexion,respectively.Palmar abduction strength of the thumb was measured at 30° and 60°,respectively.Ten subjects were randomly selected from the 40 subjects,and the quantitative muscle strength of each muscle group was tested again by the same operator after an interval of 10 to 15 days.Results Except for the fact that in males,there was no significant difference in flexor muscle strength of thumb and wrist joint between 30° of wrist extension and neutral 0° position,the muscle strength of the other fingers flexion and wrist palmar flexor showed the following characteristics:30° of wrist extension>neutral 0° posi-tion>30° of flexion,and the PAST was 30°>60°;The flexor muscle strength of all the subjects was thumb>index finger>middle finger>ring finger>little finger;All muscle strength values of male were greater than those of female,and the difference was statistically significant (P<0.05);There was no significant difference between the left and right side muscle strength values of all subjects (P>0.05).The reliability of muscle strength values measured at different times in 10 subjects was good.Conclu-sion The quantitative muscle strength of each muscle group of the hand and wrist is affected by the test position,and a standardized and uniformed test position should be adopted in the actual identification.Micro FET2TM has good reliability for hand and wrist quantitative muscle strength testing.The 30° ex-tension of the wrist can be used as the best standardized test position for the flexion muscle strength of each finger and wrist joint.The 30° position can be used as the best standardized test position for PAST.
