Analysis of the metabolic profile in 4-minute low-volume high-intensity intermittent training based on the W'balance model
10.3969/j.issn.1000-6710.2025.05.002
- VernacularTitle:基于W'平衡模型的4分钟低量高强度间歇运动能量代谢特征分析
- Author:
Junchao YANG
1
;
Zhihui LU
;
Xiangxin LI
;
Xueyuan ZHAO
;
Junqiang QIU
Author Information
1. 北京体育大学(北京 100084);运动营养北京市高等学校工程研究中心(北京 100084)
- Publication Type:Journal Article
- Keywords:
W'balance model;
critical power;
low-volume high-intensity interval training;
VO2max;
maximal accumulated oxygen deficit
- From:
Chinese Journal of Sports Medicine
2025;44(5):358-364
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effectiveness of low-volume high-intensity interval training(LV-HIIT)protocols defined by the W'Balance(W'BAL)model in achieving maximal activation of both anaerobic and aerobic energy systems.Methods Twenty-eight national-level athletes(age:20±1 years old;height:174±9 cm;weight:65.1±9.4 kg)completed an incremental exercise test,followed by six supra-critical power(supra-CP)and five sub-CP constant-load tests to determine VO2max,maximal accumulated oxygen deficit(MAOD),critical power(CP),and W prime(W').They then performed three randomly ordered LV-HIIT protocols(each of 4-minute total duration),with a 10-second inter-val for passive recovery between bouts.The protocols consisted of 10s(HIIT10/10),20s(HIIT20/10),and 30 s(HIIT30/10).Exercise intensities were individually prescribed using the W'BAL model.Accu-mulated oxygen deficit(AOD)and net AOD(NAOD)were calculated for each protocol.Results Final 10-s oxygen uptake(VO2)reached 77％,88％,and 89％of VO2max in HIIT10/10,HIIT20/10,and HIIT30/10,respectively(P<0.05).VO2 in HIIT10/10 was significantly lower than in HIIT20/10 and HIIT30/10(P<0.05),with no significant difference between the latter two(P>0.05).AOD did not differ significantly from MAOD among the three protocols(P>0.05),whereas NAOD was significantly lower than MAOD in all cases(P<0.05).Additionally,NAOD in HIIT10/10 was significantly lower than in HIIT20/10 and HI-IT30/10(P<0.05),with no significant difference between the latter two(P>0.05).Conclusion The HIIT20/10 and HIIT30/10 intensity established by the W'BAL model can substantially elicit maximal activation of both anaerobic and aerobic energy systems.While the W'BAL model demonstrates potential for set-ting exercise intensities in LV-HIIT,future studies are necessary to develop specific W'recovery rate models for targeted populations and to refine CP models that are better suited for intermittent exercises.
