[h.sup.-1]; Garvican-Lewis et al., 2016) of LHTH (i.e.
All athletes completed a taper during the final week of the camp in preparation for upcoming races occurring immediately following LHTH, following either 2 or 3 weeks of full training depending on their total camp duration.
Running performance was recorded before and after LHTH. The season's best time achieved during the track season preceding the investigation was used as the pre-altitude measure.
There was a very large increase in weekly TL (Figure 1B) between the lead-in period and first 3 weeks (first 2 weeks for n = 3 athletes completing 3 weeks LHTH) at altitude (1193 [+ or -] 371 to 1903 [+ or -] 455, p = 0.0002, d = 1.71 [0.67, 2.56], % change [90% CL] = 77 [31, 123]).
Age, body mass, as well as pre-exposure [Hb.sub.mass] were not significantly different between LHTH and CONTROL (Table 1).
Post hoc comparisons revealed that Hct was greater in LHTH than CONTROL at 2 (p = 0.01) and 3 weeks (p = 0.04) of exposure (Table 2).
We observed a 3.0% increase in [Hb.sub.mass] following three weeks of LHTH altitude exposure at 1800 m.
The results of this study have illustrated that it is possible for athletes to expect a ~ 3% increase in [Hb.sub.mass] after only 14 days of LHTH training at 1800 m.
Nine consecutive weeks of training diaries were collected before the Games of the XXVIII Olympiad held in Athens (2004) and subdivided in three periods: a) 3 weeks of sea level training before-LHTH (Milan, ITA, 122m; and Rubiera, ITA, 53m, for participant 1 and 2 respectively); b) 3 weeks of LHTH (Sestriere, ITA, 2090m); and c) 3 weeks of sea level training after-LHTH (as per before-LHTL).
To evaluate performance, the results obtained during official competitions before and after LHTH were collected for both participants.
Distribution of training volume and intensity during the LHTH period is shown in Figure 1 (upper panel).
This observational study aimed to present the practical experience of two elite endurance athletes who success fully completed a LHTH intervention which was associated with an improvement in sea level performance.