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Table 1 Characteristics of men with low and high percentage of slow-twitch type-I skeletal muscle fibers.

From: Muscle fiber-type distribution predicts weight gain and unfavorable left ventricular geometry: a 19 year follow-up study

 

Type-I% ≤60%

(n = 20)

Type-I% >60%

(n = 20)

P

Age (years)

57.4 (4.8)

60.5 (7.2)

0.11

Type-I%

47.6 (10.6)

71.6 (7.8)

<0.001

BMI at the age of 20 (kg/m2)

21.7 (1.5)

21.8 (2.0)

0.90

BMI in 1984 (kg/m2)

24.1 (2.9)

22.4 (2.6)

0.05

BMI in 2003 (kg/m2)

27.5 (4.4)

24.0 (3.3)

0.007

Weight gain/year (kg/m2) until 2003

0.16 (0.11)

0.06 (0.06)

0.002

Waist/hip ratio in 2003

1.00 (0.005)

0.94 (0.006)

0.002

Body fat % in 2003

25.5 (5.0)

19.4 (4.2)

<0.001

LTPA in 2003 (MET)

26.5 (17.1)

42.6 (23.9)

0.019

Alcohol consumption (g/day) in 2003

14.3 (9.4)

16.7 (14.7)

0.55

  1. Values are mean (SD). BMI = body mass index, LTPA = leisure time physical activity. Weight gain was calculated as the mean yearly change in BMI after the age of 20.
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BMC Cardiovascular Disorders

ISSN: 1471-2261

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