Related Experiment Videos
Grip strength: relationship to shoulder position in normal subjects
1Department of Rehabilitation Medicine, Kaohsiung Medical College, Taiwan, Republic of China.
Gaoxiong Yi Xue Ke Xue Za Zhi = the Kaohsiung Journal of Medical Sciences
|July 1, 1993
Summary
Shoulder position significantly impacts grip strength. Maximum grip strength was achieved with the shoulder at 180 degrees of flexion and the elbow extended, crucial for hand rehabilitation.
Area of Science:
- Biomechanics
- Human Physiology
- Rehabilitation Science
Background:
- Grip strength is a key indicator of upper limb function.
- Optimal testing positions are essential for accurate assessment and effective rehabilitation.
Purpose of the Study:
- To investigate the influence of varying shoulder positions on maximal grip strength.
- To identify the optimal shoulder and elbow configurations for grip strength testing.
Main Methods:
- 160 healthy subjects (80 males, 80 females) participated.
- Grip strength was measured using a Jamar dynamometer in four distinct shoulder and elbow positions.
- Subjects maintained a neutral forearm and wrist posture during testing.
Main Results:
- Grip strength was highest with the shoulder at 180° flexion and elbow fully extended.
- Grip strength was significantly lower when the elbow was flexed at 90° with the shoulder at 0° flexion.
- Grip strength varied significantly between sexes and age groups.
Conclusions:
- Shoulder position is a critical factor influencing grip strength measurements.
- The findings provide evidence-based recommendations for standardized grip strength testing protocols.
- Understanding these effects is vital for accurate patient evaluation and tailored rehabilitation programs for hand injuries.