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Table 1.

Mean population percentages of fiber types from three cross sections of the harbor seal epaxial muscle and pectoralis

Fiber type (%)
Type IType IIaType IIb
Epaxial muscles    
Cranial (10) 45.3±5.1 54.5±4.7 
Middle (9) 47.7±3.3 52.3±3.6 
Caudal (9) 48.3±5.8 52.2±5.7 
Mean of all sections (9) 47.4±4.7 52.8±4.6 
Pectoralis (6) 16.2±5.6 * 84.3±5.4 * 
Fiber type (%)
Type IType IIaType IIb
Epaxial muscles    
Cranial (10) 45.3±5.1 54.5±4.7 
Middle (9) 47.7±3.3 52.3±3.6 
Caudal (9) 48.3±5.8 52.2±5.7 
Mean of all sections (9) 47.4±4.7 52.8±4.6 
Pectoralis (6) 16.2±5.6 * 84.3±5.4 * 

Values are means ± 1 s.d. (N), where Nis number of animals averaged for each cross section.

*

Significant difference from the epaxial muscles at P<0.01.

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