The purpose of this study was to compare the physiological and performance variables corresponding to the ventilatory threshold (VT) and heart rate deflection point (HRDP) in elite mountain runners. Twelve males experienced long distance mountain runners (age: 34.08 ± 6.68 yrs; height: 176.71 ± 7.76 cm, body mass: 73.65 ± 9.16 kg) were submitted to a maximal incremental treadmill test. The initial velocity of 8 km?h~(-1) was followed by increments of 1 km?h~(-1) every minute. No differences were found between the intensity, absolute and relative heart rate corresponding to the VT and HRDP (P≥0.05). Significant correlations for the INT (r = .637; P<0.05), HR (r = .815; P<0.05) and %HR (r = .755; P<0.05), were found. The results suggest that in long distance mountain runners, the HRDP and VT are found at similar intensities, which supports the use of the HRDP as a reliable tool to estimate the second physiological transition threshold.
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机译：这项研究的目的是比较相应的生理和性能变量，分别对应于优秀山地运动员的通气阈值（VT）和心率偏转点（HRDP）。对十二名有经验的长距离山地跑男（年龄：34.08±6.68岁;身高：176.71±7.76 cm，体重：73.65±9.16 kg）进行最大增量跑步机测试。初始速度为8 km？h〜（-1），然后每分钟增加1 km？h〜（-1）。在与VT和HRDP相对应的强度，绝对心率和相对心率之间没有发现差异（P≥0.05）。发现INT（r = .637; P <0.05），HR（r = .815; P <0.05）和％HR（r = .755; P <0.05）有显着相关性。结果表明，在长距离山地跑步者中，HRDP和VT的强度相似，这支持使用HRDP作为估计第二生理转变阈值的可靠工具。
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