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Table 1 Changes in body weight and maximal isometric torque in a rat model of muscle injury induced by lengthening contractions

From: Post-injury stretch promotes recovery in a rat model of muscle damage induced by lengthening contractions

Variable

Time points of measurement

Before LC

2 days after LC

7 days after LC

14 days after LC

18 days after LC

21 days after LC

Rat body weighta

  Control (12)

244.4 ± 3.6

255.9 ± 3.2

279.3 ± 2.2

311.9 ± 3.1

324.8 ± 5.3

334.5 ± 5.7

  LC-alone (12)

244.0 ± 2.9

258.2 ± 4.4

279.9 ± 2.0

311.1 ± 2.4

323.8 ± 2.6

332.8 ± 3.2

  LC+Stretch (11)

248.4 ± 2.9

254.8 ± 2.4

275.1 ± 1.5

304.3 ± 3.2

317.6 ± 3.5

325.2 ± 3.9

Maximal isometric torque (mNm)b

  Control (12)

36.9 ± 1.0

38.3 ± 1.2

43.6 ± 0.9

46.1 ± 1.2

47.5 ± 1.5

49.8 ± 1.1

  LC-alone (12)

36.4 ± 1.3

8.9 ± 0.3**

16.1 ± 0.5**

29.8 ± 0.5**

35.4 ± 0.8**

39.4 ± 0.7**

  LC+Stretch (11)

34.9 ± 0.7

8.6 ± 0.6**

17.8 ± 0.5**

31.0 ± 0.6**

37.7 ± 0.8**

41.1 ± 0.5**

  1. Rats exposed to lengthening contractions (LC) were divided into two groups according to whether they underwent a 15-min bout of passive stretch at 1 day after LC (LC-alone vs. LC+Stretch). A control group consisting of rats not exposed to LC was also included (Control). Data are presented as mean ± standard error of the mean (SEM). The number of rats is shown in parentheses
  2. aNo significant differences among the groups at any time point by the 2-way repeated measures analysis of variance (ANOVA)
  3. bSignificant differences between the Control group and the LC-alone and LC+Stretch groups at all time points after the intervention at **p < 0.01 by two-way repeated measures ANOVA followed by Tukey’s post hoc test