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Reliability and gender differences of static explosive grip parameters based on force-time curves.
S Demura1, S Yamaji, Y Nagasawa
1Department of Physical Education, Kanazawa University, Kanazawa, Japan.
The Journal of Sports Medicine and Physical Fitness
|March 12, 2003
Summary
This study found that most static explosive grip (SEG) force-time parameters are reliable and show gender differences. Key parameters like average force and maximal rate of force development are useful for evaluating SEG.
Area of Science:
- Biomechanics
- Human Movement Science
- Sports Science
Background:
- Static explosive grip (SEG) is a crucial measure of hand and forearm strength.
- Understanding the reliability and gender-specific characteristics of SEG force-time parameters is essential for accurate performance assessment.
Purpose of the Study:
- To evaluate the reliability of various force-time parameters during SEG testing.
- To investigate potential gender differences in these SEG parameters.
- To identify key parameters indicative of maximal grip strength.
Main Methods:
- Fifty healthy young adults (males and females) participated in SEG tests.
- Data were collected over two sessions, one on the same day and one a week later.
- Twelve force-time parameters were analyzed, including average force, maximal rate of force development, and integrated area.
Main Results:
- High reliability was observed for most force-time parameters, particularly integrated area and maximal rate of force development (ICC > 0.6).
- Significant gender differences were found in most parameters, except for time to maximal grip strength and exponential function of force development.
- Average force, integrated area, and product of force and inclination correlated significantly with maximal grip strength in both genders.
Conclusions:
- Force-time parameters in SEG are influenced by muscle contraction speed.
- Parameters such as average force, integrated area, product of force and inclination, and maximal rate of force development are valuable for assessing static explosive grip.