VO2 Attained During Treadmill Running: The Influence of a Specialist (400-m or 800-m) Event

Optimal pacing for running 400- and 800-m track races

Effects of optimal pacing strategies for 400-, 800-, and 1500-m races on the VO2 response.

The aim of this study was to compare the evolution of oxygen uptake (VO2) in specifically trained runners during running tests based on the 400-, 800-, and 1500-m pacing strategies adopted by elite runners to optimize performance. Final velocity decreased significantly for all three distances, with the slowest velocity in the last 100 m expressed relative to the peak velocity observed in the 40...

Heart rate and blood lactate in 400 m flat and 400 m hurdle running: a comparative study.

This study was conducted on a group of male sprinters (n = 8) to compare heart rate (HR) and blood lactate (La) response in 400 m flat and 400 m hurdle running during weekly trial race. Durations of the flat and hurdle races were 51.65 +/- 1.51 and 58.27 +/- 1.97 sec respectively. Peak HR attained at the end of the flat and hurdle races were 192.4 +/- 5.3 and 193.6 +/- 4.1 beats/min, whereas, a...

The 400- and 800-m Track Running Induces Inspiratory Muscle Fatigue in Trained Female Middle-Distance Runners.

Inspiratory muscle fatigue (IMF) may limit exercise performance. A few studies have reported that IMF occurs after short-duration swimming exercise, but whether short-duration running can induce IMF remains unclear. Intra-abdominal pressure is increased during running through diaphragmatic activation to stabilize the spine during movements of the upper limbs. This occurs along with the increase...

Relationship between 800-m running performance and running economy during high-intensity running in well-trained middle-distance runners

Running economy (RE) at an intensity above the lactate threshold (LT) is reported to be the most important aerobic capacity for estimating 1,500-m running performance. The reason that the RE at intensity better reflects the energy metabolism during a 1,500-m run, is that it is performed above the LT intensity running. This study clarified the relationship between an 800-m run, which is performe...