From: The effect of chronic soluble keratin supplementation in physically active individuals on body composition, blood parameters and cycling performance
Body Segment
KER
CAS
Whole body
1.4 ± 2.3
0.2 ± 1.8
Left leg
2.1 ± 3.2a
0.25 ± 2.2
Right leg
1.9 ± 2.3a
− 0.64 ± 1.9
Left arm
1.4 ± 4.7
No change
Right arm
1.2 ± 3.5
Trunk
0.92 ± 3.1
0.85 ± 2.3