Effects of heat‐killed 
Next, fatigue‐related indices were assessed based on the fixed‐intensity exercise challenge with 60% VOEffects of heat‐killed TWK10 administration on circulating (a, b) lactate, (c) ammonia, (d) glucose, and (e) creatine kinase levels during and after the exercise challenge. Data are shown as mean ± SD. Treatment effects of serum lactate, ammonia, glucose, and creatine kinase levels were statistically analyzed using the unpaired Student's 