| 世居高原健康成人逐级递增负荷运动测试心率拐点与乳酸恢复能力、肺功能的相关性* |
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| 引用本文： | 孔海军,周霞,李新龙,王振杰.世居高原健康成人逐级递增负荷运动测试心率拐点与乳酸恢复能力、肺功能的相关性*[J].中国应用生理学杂志,2020,36(6):544-551. |
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| 作者姓名： | 孔海军 周霞 李新龙 王振杰 |
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| 作者单位： | 喀什大学体育学院, 新疆 喀什 844000 |
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| 基金项目： | *2020年喀什地区科技计划(KS2020024);2019年喀什大学校内科研课题((19)2655) |
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| 摘 要： | 目的:探讨世居3 200 m高原环境下20～40岁健康人群逐级递增负荷运动测试(Conconi)心率拐点(HRDP)与乳酸恢复能力、肺功能关联性。方法:以225名世居3 200 m高原的20～40岁健康人群为研究对象,按照年龄区分为20～25岁组(男26,女25)、26～30岁组(男32,女28)、31～35岁组(男29,女33)及36～40岁组(男22,女30),通过改良后Conconi测试前、测试中及测试后恢复期心率、血乳酸变化规律评价机体HRDP强度、心率恢复能力及血乳酸恢复能力。结果:①受试者心率水平随运动强度提高呈上升趋势,且运动后恢复期心率水平呈现下降趋势,世居高原男性Conconi测试中心率水平显著低于女性(P＜0.05);同年龄阶段下,男性HRDP出现较晚,女性HRDP出现较早;同性别阶段下,男性组随年龄上升HRDP出现时间提前,女性组该现象不显著;HRDPspeed随年龄上升存在下降趋势。②随年龄上升,受试者血乳酸拐点浓度逐渐降低,但低年龄组与高年龄组间不存在显著差异;男性Conconi测试中血乳酸水平显著低于女性(P＜0.05)。③随年龄上升各性别组FVC、MVV、FEV1及FEV1/FVC水平均呈下降趋势,男性组以上各数据均显著高于同年龄段女性组(P＜0.05)。④负荷-心率曲线及心率-血乳酸拟合曲线显示,男性组相关系数依次为0.8345、0.8954、0.8680及0.8892;女性组相关系数依次为 0.9318、0.9661、0.9663及0.9599。各性别、年龄组HRDP值均与其MVV水平存在显著关联(P＜0.05),除男性组36-40岁受试者外,其余各性别、年龄组肺功能与乳酸消除速率亦存在显著关联(P＜0.05)。结论:世居3 200 m高原20～40岁健康人群运动心率反应规律及呼吸系统机能存在年龄及性别差异,HRDP与乳酸恢复能力、肺功能间存在显著关联,上述指标可以作为评估世居高原健康成人有氧运动耐力能力的有效手段。
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| 关 键 词： | 高原环境 20～40岁健康人群 逐级递增负荷运动测试 心率拐点 乳酸恢复能力 肺功能 |
| 收稿时间： | 2020-01-21 |
The relationship between heart rate inflection point and lactate recovery and lung function in healthy adults at the Plateau |
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| KONG Hai-jun,ZHOU Xia,LI Xin-long,WANG Zhen-jie.The relationship between heart rate inflection point and lactate recovery and lung function in healthy adults at the Plateau[J].Chinese Journal of Applied Physiology,2020,36(6):544-551. |
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| Authors: | KONG Hai-jun ZHOU Xia LI Xin-long WANG Zhen-jie |
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| Affiliation: | College of Sports Kashgar Unversity, Kashgar 844000, China |
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| Abstract: | Objective: To explore the relationship between heart rate deflection point (HRDP) and blood lactate recovery ability and lung function of healthy people aged 20～40 years old in a plateau environment of 3 200 m. Methods: 225 healthy people aged 20～40 who lived on a plateau of 3 200 m were used as the research subjects. The HRDP strength, heart rate recovery ability and blood lactate recovery ability were evaluated by the changes of heart rate and blood lactate recovery before, during and after the modified Conconi test. Results: ①The heart rate of the subjects increased with the increase in exercise intensity, and the heart rate of the recovery period after exercise showed a downward trend, the rate of Conconi test center was significantly lower in male than that in female(P＜ 0.05). At the same age, male HRDP appeared later, and female HRDP appeared earlier. At the same sex stage, the time of HRDP appeared earlier in the male group with increasing age, while the phenomenon in the female group was not significant. HRDP speed had a downward trend with age. ②The inflection point concentration of blood lactic acid in the subjects gradually decreased with age, but there was no significant difference between the low-age group and the high-age group; the blood lactic acid level in the Conconi test of healthy adult males living on the plateau was significantly lower than that of females(P＜0.05). ③FVC, MVV, FEV1 and FEV1/FVC levels in each gender group showed a downward trend with age, and the data of the male group and above were significantly higher than the female group of the same age (P＜0.05). ④Load-Heart Rate curve and Heart Rate-Blood Lactate fitting curve showed that the correlation coefficients of the male group were 0.8345, 0.8954, 0.8680, and 0.8892 in sequence; the correlation coefficients of the female group were in sequence 0.9318, 0.9661, 0.9663 and 0.9599. HRDP values of all genders and age groups were significantly correlated with their MVV levels (P＜0.05). Except for subjects 36～40 years old in the male group, lung function and lactate elimination rate of all genders and age groups were also significantly correlated (P＜0.05). Conclusion: There are age and gender differences in exercise heart rate response rules and respiratory system functions of healthy people aged 20～40 years old living on 3 200 m plateau. There is a significant correlation between HRDP and lactic acid recovery capacity and lung function. The above indicators can be used to assess the aerobic exercise endurance ability of healthy adults living on plateau. |
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| Keywords: | plateau environment healthy people aged 20～40 gradually increasing load exercise test heart rate deflection point lactate recovery ability lung function |
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