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Objective: Handgrip strength may differ depending on the type of sport played during the developmental period. Youth sports in which athletes hold equipment in their hands may be the most effective for improving handgrip strength. This study aimed to examine the age at which differences in handgrip strength appear by comparing sports that involve gripping (kendo) with those that do not involve gripping (soccer) in young athletes., Methods: Two hundred and twenty-two male athletes (115 kendo and 107 soccer) between 6 and 15 years old participated in this study. Handgrip strength was measured using a dynamometer, and the average value of both hands was used for analysis. Sports experience was determined when they started practicing each sport. Handgrip strength was compared between sports. Statistical moderation was used to determine if the relationship between sport and handgrip strength depended upon the age of the athlete., Results: Kendo athletes had significantly higher handgrip strength than soccer athletes (4.77 kg [95% CI: 2.34, 7.19]) in the overall sample. We found that the relationship between sport and handgrip strength depended upon the age of the child (sport*age t = -3.6, p = .004). Using the Johnson-Neyman procedure, we found statistically significant differences between sports from 8.48 years and older., Conclusions: Our results suggest that the type of sport played, that is, whether or not an athlete plays with sports equipment in their hands, may influence the development of handgrip strength during the period of growth, and these sports may contribute to a higher level of handgrip strength in adulthood., (© 2023 Wiley Periodicals LLC.)

ABSTRACT Objective Methods Results Conclusion Whether or not an athlete plays with sports equipment in their hands may influence handgrip strength (HGS) changes during development, but longitudinal studies have not confirmed this. This study compared one‐year HGS changes between two sports types (soccer vs. kendo) in children and adolescent athletes.One hundred sixty‐eight young athletes (86 kendo boys and 82 soccer boys) had two HGS measurements separated by 1 year. A 2 (sports) by 2 (timepoints 1 and 2) repeated measures ANOVA was used to determine whether HGS changed differently between sports.There was no evidence for a sport × time interaction in HGS (p = 0.14); however, the mean difference and 95% CI were in the direction of favoring a greater change in kendo athletes [difference of 0.6 (95% CI: −0.2, 1.5) kg]. There was a main effect of time and sport. Kendo athletes had a 4.6 (95% CI: 1.8, 7.5) kg greater HGS than soccer athletes. There was no evidence that the change in HGS between sports depended on the initial age of the athlete (p = 0.205).Using sports equipment during play may positively affect HGS. [ABSTRACT FROM AUTHOR]

Objective: This study aimed to compare the current handgrip strength (HGS) of Kendo athletes with their HGS when they were in university (up to 50 years). Methods: Eighty male graduates who were Kendo club members during their university days performed anthropometric and HGS measurements, and these HGS were compared with those measured during their university days (mean age of 19.5 years old). Results: There was no evidence of a statistical difference in HGS between the current measurement and the measurement taken during university [−0.64 (−1.9, 0.67) kg, p =.336]. There was, however, evidence that the difference in HGS depended upon the current age of the individual (t = −6.43, p <.001). When probing the interaction, there were statistical differences between the ages of 24.6 and 38.2 years and between the ages of 47.4 and 69.9 years. Strength increased across time in the younger participants and decreased for those who were older. Between the ages of 38.9 and 46.1 years, there was no evidence of a statistical difference indicating a maintenance of strength. Conclusion: The HGS of Kendo club graduates, which they acquired during their formative years, continued to increase even after they graduated from university and entered their 30s. However, their HGS decreased from age 50, even though they practiced Kendo. [ABSTRACT FROM AUTHOR]