Shaw Austin B, Caldwell Lydia K, Mihalek John Michael, Gobatto Claudio A, Papoti Marcelo, de Barros Manchado-Gobatto Fúlvia, Hill David W
Applied Physiology Laboratory, Department of Kinesiology, Health Promotion, and Recreation, University of North Texas, 1155 Union Circle #310769, Denton, TX, 76203-5017, USA.
School of Sport Sciences, College of Applied Human Sciences, West Virginia University, Morgantown, WV, USA.
Eur J Appl Physiol. 2025 Mar;125(3):653-670. doi: 10.1007/s00421-024-05611-2. Epub 2024 Oct 5.
The gold standard measure of anaerobic contribution is accumulated oxygen deficit (AOD). The purpose of this study was to investigate the validity of an alternate measure, AOD_alt. AOD_alt is the sum of the phosphocreatine and glycolytic contributions, which are estimated from post-exercise oxygen uptake and blood lactate concentration, respectively.
In Study One, six women and three men performed 6-min bouts of heavy intensity cycle ergometer exercise, once in normoxia (FO ~ 21%) and twice under hypoxic conditions (FO ~ 15% and ~ 12%). In Study Two, four women and two men performed severe intensity tests to exhaustion, once in normoxia (~ 10 min) and twice in hypoxia (FO ~ 15% and ~ 10%). Physiological responses were measured during exercise and 7 min of recovery.
In 6 min of heavy exercise, Study One, the alternate and criterion measures of anaerobic contribution (AOD_alt and AOD) were correlated, in normoxia and in hypoxia. In exhaustive severe exercise, Study Two, AOD_alt and AOD were correlated (r = 0.77) and similar, in normoxia and at FO ~ 15%. However, AOD_alt and AOD values were neither correlated (r = 0.27) nor similar (57 ± 5 mL·kg vs 51 ± 7 mL·kg) at FO ~ 10%.
These results confirm the validity of AOD_alt as a measure of anaerobic capacity in severe intensity exercise, demonstrate its validity in heavy exercise, and assert its validity in conditions of hypoxia (FO ~ 12%).
无氧代谢贡献的金标准测量方法是累积氧亏（AOD）。本研究的目的是调查一种替代测量方法AOD_alt的有效性。AOD_alt是磷酸肌酸和糖酵解贡献的总和，分别根据运动后摄氧量和血乳酸浓度估算得出。
在研究一中，6名女性和3名男性进行了6分钟的高强度自行车测力计运动，一次在常氧状态下（FO≈21%），两次在低氧条件下（FO≈15%和≈12%）。在研究二中，4名女性和2名男性进行了力竭性的高强度测试，一次在常氧状态下（约10分钟），两次在低氧状态下（FO≈15%和≈10%）。在运动期间和恢复7分钟期间测量生理反应。
在研究一的6分钟高强度运动中，常氧和低氧状态下，无氧代谢贡献的替代测量方法和标准测量方法（AOD_alt和AOD）具有相关性。在研究二的力竭性高强度运动中，常氧和FO≈15%时，AOD_alt和AOD具有相关性（r = 0.77）且相似。然而，在FO≈10%时，AOD_alt和AOD值既不具有相关性（r = 0.27）也不相似（57±5 mL·kg对51±7 mL·kg）。
这些结果证实了AOD_alt作为高强度运动中无氧能力测量方法的有效性，证明了其在高强度运动中的有效性，并表明其在低氧条件下（FO≈12%）的有效性。
