歩くだけでなく、筋トレも！

引用元: https://www.researchgate.net/profile/Shinya_Kuno/publication/305185281_EFFECT_OF_STRENGTH_TRAINING_ON_AGING_MUSCLES_OF_ELDERLY_PEOPLE/links/57b46cbf08ae19a365fae7f8/EFFECT-OF-STRENGTH-TRAINING-ON-AGING-MUSCLES-OF-ELDERLY-PEOPLE.pdf