TABLE 1.

Physical characteristics, physical activity, and muscle thickness of the triceps surae of participants.

		Old men (n = 15)	Young men (n = 15)
Age	years	73 ± 5	24 ± 4*
Height	cm	166.5 ± 6.1	172.1 ± 4.8*
Body mass	kg	67.5 ± 9.2	67.7 ± 10.6
Physical activity
light	min⋅day–1	636 ± 101	637 ± 67
moderate	min⋅day–1	77 ± 13	78 ± 10
vigorous	min⋅day–1	1 ± 1	5 ± 10
MG thickness	mm⋅kg–1/3	4.7 ± 0.5	5.6 ± 0.6*
LG thickness	mm⋅kg–1/3	3.3 ± 0.7	3.5 ± 0.5
SOL thickness	mm⋅kg–1/3	3.3 ± 0.8	3.5 ± 0.5

*Indicates the significant difference between older and young men. LG, lateral gastrocnemius; MG, medial gastrocnemius; SOL, soleus. Data are shown as mean ± standard deviation.