Table 1 Characteristics of the rats.

From: Sympathetic modulation of hindlimb muscle contractility is altered in aged rats

 

Young adult (4–9 months)

Aged (32–36 months)

Male (n = 6)

Female (n = 5)

Male (n = 5)

Female (n = 6)

Body weight, g

365 (310–380)

198 (181–206)

376 (350–405)

246 (212–277)

Weight of the triceps surae muscles, g

2.1 (1.8–2.2)

1.2 (1.1–1.2)

1.2 (0.9–1.5)

0.9 (0.8–1.0)

Relative weight of the muscles, % of body weight

0.58 (0.56–0.60)

0.59 (0.57–0.64)

0.32 (0.24–0.39)*

0.36 (0.35–0.39)#

Basal TF amplitude, g

1.93 (0.71–2.61)

1.40 (1.32–1.94)

1.43 (0.12–4.13)

1.58 (0.33–3.55)

  1. Values are presented as median and range.
  2. *P < 0.0001 vs. young males, #P < 0.0001 vs. young females by one-way factorial ANOVA and Bonferroni’s multiple comparisons test.
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