Sports Physiology
Sports Physiology
Introduction
The running velocities associated to lactate minimum (V^sub lm^), heart rate deflection (V^sub HRd^), critical velocity (CV), 3 000 m (V^sub 3000^) and 10 000 m performance (V^sub 10km^) were compared. Additionally the ability of V^sub lm^, and V^sub HRd^ on identifying sustainable velocities was investigated. Twenty runners (28.5±5.9 y) performed
1) 3 000 m running test for V^sub 3000^;
2) an all-out 500 m sprint followed by 6×800 m incremental bouts with blood lactate ([lac]) measurements for V^sub lm^;
3) a continuous velocity-incremented test with heart rate measurements at each 200 m for V^sub HRd^;
4) participants attempted to 30 min of endurance test both at V^sub lm^(ETV^sub lm^) and V^sub HRd^(ETV^sub HRd^).
Additionally, the distance-time and velocity-1/time relationships produced CV by 2 (500 m and 3 000 m) or 3 predictive trials (500 m, 3 000 m and distance reached before exhaustion during ETV^sub HRd^), and a 10 km race was recorded for V^sub 10km^. The CV identified by different methods did not differ to each other. The results (m.min^sup -1^) revealed that.V^sub lm^ (281±14.8)
Aims
The running velocities associated to lactate minimum (V^sub lm^), heart rate deflection (V^sub HRd^), critical velocity (CV), 3 000 m (V^sub 3000^) and 10 000 m performance (V^sub 10km^) were compared. Additionally the ability of V^sub lm^, and V^sub HRd^ on identifying sustainable velocities was investigated.
Methods
Twenty runners (28.5±5.9 y) performed
3 000 m running test for V^sub 3000^;
an all-out 500 m sprint followed by 6×800 m incremental bouts with blood lactate
([lac]) measurements for V^sub lm^;
a continuous velocity-incremented test with heart rate measurements at each 200 m for V^sub HRd^;
Participants attempted to 30 min of endurance test both at V^sub lm^(ETV^sub lm^) and V^sub HRd^(ETV^sub HRd^).
Additionally, the distance-time and velocity-1/time relationships produced CV by 2 (500 m and 3 000 m) or 3 predictive trials (500 m, 3 000 m and distance reached before exhaustion during ETV^sub HRd^), and a 10 km race was recorded for V^sub 10km^.
Results
The CV identified by different methods did not differ to each other. The results (m.min^sup -1^) revealed that.V^sub lm^ (281±14.8)
Conclusion
We evidenced that CV and Vlm track-protocols are valid for running evaluation and performance prediction and the parameters studied have different significance. The V^sub lm^, reflects the moderate-high intensity domain (below CV), can be sustained without [lac] accumulation and may be used for long-term exercise while the V^sub HRd^ overestimates a running intensity that can be sustained for long-time. Additionally, V^sub 3000^ and V^sub HRd^ refect the severe intensity domain (above CV).
The relationship between V^sub lm^, V^sub HRd^, CV and running performance ...