Both males and females improved ankle range of motion of their dominant leg in the two flexibility assessments performed, but improvements were statistically significantly higher in males.
With kidney damage, there may be signs of renal failure like reduced urine output and fluid retention, which leads to a puffy face and swollen legs, ankles and feet.
One study in 2020 showed that dorsiflexion range of motion, or range of motion of the ankle, had a moderately sized 18.4% increase after using the massage gun on the calf muscles for just 5 minutes beforehand.