Statistical analysis
All data are expressed as the mean ± SD. Statistical analyses were performed using GraphPad Prism 8.1.1 (GraphPad). Within‐group differences (before administration vs. after administration) were analyzed using the paired Student's Effects of heat‐killed TWK10 administration on (a) exercise endurance performance and (b) grip strength of the subjects. Data are shown as mean ± SD. The statistical significance was analyzed by two‐way repeated measures ANOVA with Bonferroni 