Unveiling the impact of varied load intensities on para-biathletes' performance in rifle shooting

The study investigated the effect of varied load intensities on shooting performance after standing and seated gliding by simulated Paralympics in conditions. Sixteen well-trained Chinese biathletes (average age 20.52 ± 0.88 years) completed tests at different transition times (100% HRmax, maximum heart rate; 85% HRmax, and 70% HRmax) in the sitting and standing postures. Subjects are required to glide in a double-braced cane maneuver and then complete the shot in a prone shooting position after gliding. Physiological measurements (HR, blood lactate concentration, and rating of perceived exertion) and shooting performance (hit number, shooting time, range time) were collected. For standing sliding, the mean number of hits of 70% HRmax was significantly different compared to 100% HRmax and 85% HRmax. For seated sliding, the shooting performance results revealed in the 2nd transition round, 85% HRmax had significantly higher shot hits than 100% HRmax. The load intensity of 85% HRmax has the best effect on para-biathlon athletes. Under this intensity, athletes have the shortest shooting time, the largest number of total shooting hits, and the highest hit rate and transition efficiency.