Traits | Muscle fiber type | Unipennate | Bipennate | Multipennate | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DP | LD | (PE) | p-value | BB | BF | RF | (PE) | p-value | SS | SDF | (PE) | p-value | ||
Cross-sectional area (μm2) | I | 2,062.2 | 1,937.1 | (142.1) | 2,668.5 | 3,039.5 | 2,302.3 | (237.8) | 3,150.2 | 3,329.0 | (324.5) | |||
IIA | 1,653.9 | 1,106.9 | (146.9) | 1,964.6 | 2,191.7 | 1,791.1 | (198.3) | 2,850.3 | 2,491.7 | (229.8) | ||||
IIAX | nd | nd | nd | 1,801.7 | 1,285.7 | 1,970.9 | (202.5) | 2,846.6 | 2,488.6 | (170.1) | ||||
IIX | 1,959.5 | 1,801.5 | (116.6) | 2,625.4 | 2,898.2 | 2,517.5 | (205.6) | 3,518.5 | 1,704.8 | (638.0) | ||||
IIXB | 1,858.6 | 2,009.5 | (109.0) | 2,266.7 | 2,018.7 | 2,901.6 | (262.0) | 3,522.5 | 2,190.0 | (465.2) | ||||
IIB | 2,609.2 | 1,718.5 | (361.6) | 2,656.4 | 2,905.0 | 2,920.9 | (157.4) | 3,568.6 | 2,354.8 | (412.2) | ||||
Mean | 1,953.5 | 1,714.7 | (124.0) | 2,307.2 | 2,601.8 | 2,403.0 | (161.9) | 3,283.3 | 2,480.1 | (295.4) | ||||
Relative fiber area (%) | I | 43.2 | 4.2 | (9.1) | 16.7 | 28.1 | 14.8 | (4.2) | 23.9 | 29.3 | (9.1) | |||
IIA | 33.0 | 11.2 | (5.4) | 20.5 | 14.1 | 21.0 | (2.7) | 18.6 | 23.1 | (3.6) | ||||
IIAX | nd | nd | nd | 3.6 | 1.0 | 0.9 | (0.7) | 1.3 | 2.0 | (1.3) | ||||
IIX | 10.1 | 26.4 | (5.6) | 32.4 | 17.6 | 11.2 | (5.1) | 27.7 | 13.3 | (9.3) | ||||
IIXB | 8.1 | 15.9 | (3.4) | 16.0 | 7.1 | 18.6 | (4.2) | 11.7 | 14.0 | (3.8) | ||||
IIB | 5.7 | 42.2 | (9.1) | 10.8 | 32.1 | 32.7 | (6.4) | 16.7 | 18.3 | (9.6) | ||||
Fiber density (number/mm2) | I | 210.7 | 21.9 | (42.9) | 56.5 | 92.0 | 63.6 | (12.9) | 73.8 | 80.8 | (23.3) | |||
IIA | 200.7 | 102.5 | (26.8) | 105.0 | 65.9 | 113.2 | (12.4) | 66.0 | 93.6 | (13.5) | ||||
IIAX | nd | nd | nd | 17.7 | 7.6 | 4.7 | (3.6) | 4.8 | 8.0 | (4.9) | ||||
IIX | 51.8 | 152.0 | (32.1) | 121.9 | 65.9 | 44.8 | (18.6) | 77.4 | 58.7 | (29.8) | ||||
IIXB | 43.5 | 79.0 | (17.6) | 65.8 | 29.1 | 65.7 | (14.3) | 34.8 | 60.2 | (15.0) | ||||
IIB | 23.2 | 242.8 | (51.1) | 36.9 | 114.0 | 112.3 | (21.5) | 46.7 | 72.0 | (33.2) | ||||
Total | 529.8 | 598.2 | (32.4) | 403.8 | 374.6 | 407.8 | (21.1) | 303.4 | 373.3 | (30.8) |