摘要
目的:探索采用最大累积氧亏法(maximal accumulated oxygen deficit,MAOD)和磷酸肌酸-乳酸-氧气法(phosphocreatine-lactate-oxygen,PCr-La-O)计算 400 米跑能量供应的差异程度。方法:招募13名男性400米跑专项运动员,年龄19.9 ± 1.4岁,身高 178 ± 5 cm,体重 69.9 ± 7.2 kg,最好成绩 50.49 ± 1.37 s。共参加 3 次运动测试,包括递增负荷、恒定负荷[50%、60%、70%、80%和 90%最大摄氧量(VO)]和田径场400米跑专项测试。400米跑供能比例分别采用MAOD法和PCr-La-O法计算,两者的差异程度基于数据级数推断比较。结果:根据MAOD法,计算的400米跑有氧供能(%)为47.5% ± 4.7%,无氧供能(%)为 52.5% ± 4.7%;PCr-La-O法计算的 400 米跑有氧供能(%)为 36.4% ± 7.6%,无氧供能(%)为63.6% ± 7.6%。MAOD法和PCr-La-O法计算的供能比例(有氧或无氧)差值为11.1% ± 2.1%,具有统计学意义(P<0.05)。数据级数推断结果显示,MAOD法与PCr-La-O法计算的供能比例呈现出中度到非常大差异。Pearson相关结果显示,MAOD法和PCr-La-O法计算的供能比例均与运动成绩无显著性相关(MAOD法:r=±0.258,P>0.05;PCr-La-O法:r=±0.398,P>0.05)。结论:MAOD法和PCr-La-O法计算400米跑能量供应的结果不同,建议结合测试目的、对象和可行性首选MAOD法进行计算。
Purpose To explore the difference in energy contribution calculated by maximal accumulated oxygen deficit(MAOD) and phosphocreatine-lactate-oxygen(PCr-La-O) method in the 400-metre track running. Methods Totally 13 male 400-m track runners(age: 19.9 ± 1.4 years,height: 178 ± 5cm,weight: 69.9 ± 7.2 kg,personal best time: 50.49 ± 1.37 s) were recruited. The subjects underwent a maximal incremental exercise test,five submaximal constant workload tests(50%,60%,70%,80% and 90% maximal oxygen uptake) and a 400-metre all-out track run. The energy contribution was calculated by MAOD and PCr-La-Oand the differences were observed. Results According to MA-OD method,the aerobic and anaerobic energy accounted for 47.5% ± 4.7% and 52.5% ± 4.7% of the total energy supply,while according to the PCr-La-Omethod,the corresponding values were 36.4%± 7.6% and 63.6% ± 7.6% respectively. The gap in energy supply ratio was 11.1% ± 2.1%(P<0.05),showing significant differences. The magnitude-based inference indicated medium to very large differences in the aerobic energy contribution measured by MAOD and PCr-La-Omethod. Pearson correlation results showed that the energy supply ratio measured by MAOD and PCr-La-Omethods was not significantly correlated with the sports performance(MAOD method: r=±0.258,P>0.05;PCr-La-Omethod: r=±0.398,P>0.05). Conclusions The energy contribution in the 400-metre track running is affected by the calculating method,and the MAOD method is recommended as the first choice based on the purposes,objects,and feasibility of tests.
作者
杨俊超
陈雨扬
奥航
李新元
许春艳
邱俊强
Yang Junchao;Chen Yuyang;Muradov Orhan;Li Xinyuan;Xu Chunyan;Qiu Junqiang(School of Sport Science,Beijing Sport University,Beijing 100084,China;Beijing Sports Nutrition EngineeringResearch Center,Beijing 100084,China)
出处
《中国运动医学杂志》
CAS
CSCD
北大核心
2022年第8期581-586,共6页
Chinese Journal of Sports Medicine
基金
国家重点研发计划专项(2018YFC2000600)
奥运备战“直通车”一期科研项目。
关键词
供能比例
400米跑
最大累积氧亏法
磷酸肌酸-乳酸-氧气法
energy supply ratio
400-metre track running
maximal accumulated oxygen deficit
phosphocreatine-lactate-oxygen