Table 1.

Concentrations of plasma PICP, ICTP and serum creatine kinase

	Before	Week 4	Week 11
Plasma PICP (μgl−1)	187.6 ± 20.4	201.8 ± 12.9	168.0 ± 18.0
Plasma ICTP (μgl−1)	6.4 ± 0.5	5.3 ± 0.4*	5.3 ± 0.3*
Serum CK (Ul−1), trained	193 ± 31	479 ± 105*	348 ± 58*
Serum CK (Ul−1), untrained	151 ± 33	333 ± 51*	430 ± 104*

PICP and ICTP were determined in plasma as markers for collagen synthesis and degradation, respectively, before and after 4 and 11weeks of military training in 19 healthy young males (means ±s.e.m.;

^*P < 0.05 vs. Before). Serum CK was determined before and after 4 and 11 weeks of military training in trained (n = 12) and untrained (n = 7) healthy young males (*P < 0.05 vs. Before).