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Table 2 Lower leg muscle structure for 20 MTSS symptomatic and 20 control limbs

From: Lower leg muscle structure and function are altered in long-distance runners with medial tibial stress syndrome: a case control study

Variables

MTSS symptomatic limbs

95 % CI

Control limbs

95 % CI

Mean difference

Cohen’s d

p-value

FDL thickness (mm)

15.9 (2.8)

14.7–17.0

15.9 (2.2)

14.8–17.1

0

0

0.951

FDL CSA (mm2)

243.3 (88.9)

200.4-286.5

277 (96.1)

234.1-320.1

33.7

0.36

0.252

FHL thickness (mm)

18.9 (2.5)

17.3–20.7

20.6 (4.0)

18.7–22.3

1.7

0.51

0.056

FHL CSA (mm2)

481.9 (122.3)

404.9-550.1

538.6 (126.0)

461.4-605.8

56.7

0.46

0.042*

GL thickness (mm)

15.8 (2.1)

14.9–16.7

13.9 (1.9)

13.0-14.8

-1.9

-0.95

0.007*

GM thickness (mm)

20.3 (3.6)

18.9–21.7

18.9 (2.1)

17.5–20.3

-1.4

-0.47

0.114

P thickness (mm)

15.6 (2.4)

14.6–16.7

14.9 (2.0)

13.8–15.9

-0.7

-0.32

0.288

P CSA (mm2)

377.1 (77.4)

337.4-410.6

354.2 (57.7)

317.0-387.2

-22.9

-0.34

0.273

SOL thickness (mm)

16.5 (2.7)

15.0–18.0

18.4 (3.1)

16.9–19.9

1.9

0.65

0.016*

TA thickness (mm)

25.1 (2.6)

23.3–26.9

24.2 (3.7)

22.4–26.0

-0.9

-0.28

0.289

TA CSA (mm2)

672.8 (160.7)

591.6-763.2

686.9 (108.4)

605.1-779.2

14.1

0.10

0.671

Lean lower leg girth (normalised to lower leg length)

0.94 (0.73)

0.91–0.98

0.95 (0.83)

0.91–0.99

0.01

0.01

0.813

  1. Values are mean (± SD), *p < 0.05
  2. CI confidence interval, FDL flexor digitorum longus, FHL flexor hallucis longus, GL gastrocnemius lateral head, GM gastrocnemius medial head, peroneals, SOL soleus, TA tibialis anterior, Mean difference = Control – MTSS symptomatic limbs
  3. *significant difference