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Table 3 Muscle Function and Morphology

From: Dietary fish oil supplement induces age-specific contractile and proteomic responses in muscles of male rats

 

Adult

Aged

Ctl (n = 7)

DFO (n = 7)

Ctl (n = 6)

DFO (n = 6)

Twitch Force (N) A

4.36 ± 0.32

5.53 ± 0.38

3.78 ± 0.40

4.04 ± 0.35

Tetanic Force (N) A, D

12.76 ± 0.44

14.87 ± 0.88

10.02 ± 0.86

11.65 ± 0.79

Twitch Muscle Quality (N/cm2)

5.01 ± 0.26

6.42 ± 0.51

5.35 ± 0.49

5.30 ± 0.40

Tetanic Muscle Quality (N/cm2) D

14.68 ± 0.47

17.25 ± 1.14

13.82 ± 0.60

15.28 ± 0.76

Muscle Mass (g) A

1.33 ± 0.05

1.35 ± 0.05

1.15 ± 0.07

1.19 ± 0.04

Muscle CSA (cm2) A

0.87 ± 0.03

0.87 ± 0.03

0.71 ± 0.04

0.76 ± 0.03

TPT (ms)

31.8 ± 1.7

35.6 ± 2.5

35.5 ± 2.8

30.8 ± 1.3

1/2 RT (ms) X

24.3 ± 2.1a

30.3 ± 3.5

40.3 ± 9.6

21.0 ± 0.8a

RFD (mN/ms)

311.7 ± 26.4

340.4 ± 70.9

252.0 ± 27.9

327.8 ± 30.8

RFR (mN/ms) A

271.3 ± 19.1

270.2 ± 31.5

149.1 ± 37.2

236.9 ± 9.2

norm RFD (%/ms)

2.5 ± 0.2

2.3 ± 0.2

2.7 ± 0.3

2.9 ± 0.4

norm RFR (%/ms) X

2.2 ± 0.2a

1.8 ± 0.1

1.5 ± 0.2

2.0 ± 0.2

Twitch:Tetanus

0.34 ± 0.01

0.37 ± 0.04

0.39 ± 0.03

0.34 ± 0.02

lopt (mm) A, X

32.5 ± 0.1a

32.8 ± 0.3a

34.5 ± 0.1

33.0 ± 0.3a

  1. Data represent means ± SE
  2. asignificantly different from Aged Ctl
  3. A significant effect of age, D significant effect of diet, X significant interaction
  4. CSA cross-sectional area, TPT time to peak twitch force; ½ RT half-relaxation time of twitch force, RFD rate of tetanic force development, RFR rate of tetanic force relaxation; norm, RFD rate of tetanic force development normalized to peak tetanic force, RFR rate of tetanic force relaxation normalized to peak tetanic force, twitch:tetanus ratio of peak twitch to peak tetanic force, lopt optimal length for twitch force production
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Lipids in Health and Disease

ISSN: 1476-511X