Differences Between the Vastus Lateralis and Gastrocnemius Lateralis in the Assessment Ability of Breakpoints of Muscle Oxyg
©Journal of Sports Science and Medicine (2012) 11, 606-613 http://www.jssm.org Research article Differences between the vastus lateralis and gastrocnemius lateralis in the assessment ability of breakpoints of muscle oxygenation for aerobic capacity indices during an incremental cycling exercise Bangde Wang 1,2, Guodong Xu 3,4, Qingping Tian 1,2, Jinyan Sun 1,2, Bailei Sun 1,2, Lei Zhang 1,2, Qing- ming Luo 1,2 and Hui Gong 1,2 1 Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, 2 Key Laboratory of Biomedical Phototonics of Ministry of Education, Huazhong University of Science and Technology, Wuhan, China, 3 School of Physical Education, Jianghan University, Wuhan, P.R.China, 4 College of Health Science, Wuhan Institute of Physical Education, Wuhan, China disadvantages have limited the use of related techniques Abstract during the detection of aerobic exercise capacity indices. In recent years, breakpoints (Bp) of muscle oxygenation have It has frequently been reported that exercise physi- been measured in local muscles using near infrared spectroscopy ologists could non-invasively evaluate relative changes in (NIRS) to assess (predict) systemic aerobic capacity indices the balance between oxygen delivery and utilisation at the [lactate threshold (LT), gas exchange threshold (GET) and level of the small blood vessels—the arterioles, capillar- maximal oxygen uptake (VO2peak)]. We investigated muscular ies, and venules—by near infrared spectroscopy (NIRS) differences in the assessment (predictive) ability of the Bp of (Bhambhani, 2004; Ferrari et al., 2004). Due to its non- muscle oxygenation for aerobic capacity indices during incre- mental cycling exercise on the aerobic capacity indices.
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