Figure 3

Recovery heart rate. Heart rate 10 min after finishing 1,600 m-tests (A), number of participating horses in each test: 12, 8, 15, 11, 15, 12, 11, 13, 13, 12,), after training sessions performed as heat training (B), interval training on flat track (C) and uphill interval training (D) in 16 horses divided in a control (squares) and a reduced (by 30% distance, triangles) training group since March as 2-year-olds * Indicate difference (P < 0.05) between the control and reduced group. Unfilled dots indicate a significant difference within group from (A) the starting point in March as 2-year-olds, (B) from January-June as 2-year-olds, (C) from July-September as 2-year-olds and (D) from January-March as 3-year-olds.