Optical diffuse reflectance in fibrous tissues depends on measurement angles in relation to fiber orientation. In this study, path-length resolved optical reflectance was measured in tendon and skeletal muscle samples using a low-coherence Mach-Zehnder interferometer. The results show that the angular dependency in reflectance was eliminated in tendon tissue when representing reflectance as a function of mean path-length. Our analysis indicated that this observation can be understood in the frame work of anisotropic diffuse theory. However the same phenomenon was not observed in muscles, suggesting involvement of additional scattering mechanisms.