Table 4.

Comparison of capillary density, number of capillaries surrounding type I and type IIA fibers, and capillary-to-fiber ratio before training (untrained) and after 8 weeks of harness training (trained).

Training status	Capillary density (/mm2)	Capillaries surrounding fiber type		Capillaries/fiber ratio
		Type I	Type IIA
Untrained	330 (206–600)	4.79 (3.86–5.68)	6.11 (4.8–7.84)	2.09 (1.69–2.79)
Trained	521 (437–614) *	5.60 (4.28–7.0) *	7.39 (5.56–9.34) *	2.59 (1.99–3.37) *

^*Significantly different from untrained, p < 0.01.

Results are given as median (minimum–maximum).