Fig. 2: Body weight, skeletal muscle mass and exercise activity in rotarod test.

a Body weight of SR1, SP-C and SP8-Ap mice at 22, 23, 24 and 25 weeks. b Gastrocnemius muscle mass of SR1, SP-C and SP8-Ap mice at 25 weeks. c Time to fall in rotarod test. Each time to fall in SR1, SP8-C and SP8-Ap was plotted as open circle, closed triangle and closed circle, respectively. SP8-Ap, senescence-accelerated prone mice 8 received acupuncture stimulation; SP8-C, senescence-accelerated prone mice 8 without acupuncture stimulation; SR1, senescence-accelerated resistant mice 1 without acupuncture stimulation.