Maximal isometric handgrip strength: comparison between weight categories and classificatory table for adult judo athletes

Author(s)

Franchini, Emerson ^{[1, 2]} ; Schwartz, Juliano ^{[2, 3]} ; Takito, Monica Yuri ^{[4, 5]}

Affiliation

^[1] Australian Inst Sport, Combat Ctr, Canberra, ACT - Australia

^[2] Univ Sao Paulo, Sch Phys Educ & Sport, Sport Dept, Martial Arts & Combat Sports Res Grp, Sao Paulo - Brazil

^[3] Univ British Columbia, Vancouver, BC - Canada

^[4] Univ Sao Paulo, Sch Phys Educ & Sport, Human Movement Pedag Dept, Sao Paulo - Brazil

^[5] Univ Canberra, Canberra, ACT - Australia

• Document type: Journal article
• Source: JOURNAL OF EXERCISE REHABILITATION; v. 14, n. 6, p. 968-973, DEC 2018.
• Web of Science Citations: 1

Abstract

The aims of this study were to compare the maximal isometric handgrip strength of judo athletes from different weight categories and to create a classificatory table for this test A total of 406 athletes had their maximal isometric handgrip strength measured, following standardized recommendations. Absolute and relative values were calculated for each hand and for the sum of both hands. Weight categories were compared through a one-way analysis of variance, followed by Tukey test The effect size was determined by partial eta squared, and the relationship between variables was determined using Pearson correlation coefficient There was a large effect of weight category in absolute handgrip strength for each hand and for the sum of both hands, with lower values for the lighter categories. Conversely, when the relative strength was considered higher values were found for the lighter categories (P<0.001). Very large and significant positive correlations (P< 0.001) were found between right and left for absolute (r=0.886) and relative (r= 0.883) handgrip values. Overall, there was an increase in absolute and a decrease in relative handgrip strength across weight categories. These differences found in grip strength in weight categories are probably linked to differences in muscle mass between them. There was a high correlation between each hand for absolute and relative values, which suggests that assessing only one hand may be enough, and therefore a faster way of evaluation. Finally, the normative classificatory table created may serve as a reference for different purposes. (AU)

• FAPESP's process: 17/19280-4 - The use of information technology for health promotion during pregnancy
• Grantee: Monica Yuri Takito
• Support Opportunities: Scholarships abroad - Research
• FAPESP's process: 17/08167-2 - Pacing in judo
• Grantee: Emerson Franchini
• Support Opportunities: Scholarships abroad - Research