Is Oxygen Uptake Measurement Enough to Estimate Energy Expenditure During High-Intensity Intermittent Exercise? Quantification of Anaerobic Contribution by Different Methods

Abstract

Purpose: The aim of the present study was to compare the contributions of the anaerobic pathway as determined by two different methods and energy expenditure during a typical high-intensity intermittent exercise (HIIE) protocol.Methods: A descriptive research design was utilized in which thirteen physically active men performed six experimental sessions consisting of an incremental test (session 1), submaximal tests at 40, 50, 60, 70, 75, 80, 85, 90% of velocity associated with maximum oxygen uptake (vtrueV˙O2max) with two intensities per session (sessions 2–5), and the HIIE protocol (session 6; 10 efforts of 1 min at vtrueV˙O2max interspersed by 1 min of passive recovery). The estimation of anaerobic energy system contribution was calculated by: (a) the excess post-exercise oxygen consumption plus delta lactate method and (b) the accumulated oxygen deficit method using the difference between predicted oxygen demand from the submaximal tests of varying intensities and accumulated oxygen uptake during HIIE. Estimation of aerobic energy system contribution was calculated through the measurement of oxygen consumption during activity. Total EE during the entire HIIE protocol (efforts + recovery) and for the efforts only were calculated from each method.Results: For efforts + recovery and efforts only, anaerobic contribution was similar for both methods, and consequently total EE was also equivalent (p = 0.230 for both comparisons). During efforts + recovery, aerobic:anaerobic energy system contribution was (68 ± 4%: 32 ± 4%), while efforts only was (54 ± 5%: 46 ± 5%) with both situations demonstrating greater aerobic than anaerobic contribution (p < 0.001 for both).Conclusion: Anaerobic contribution seems to be relevant during HIIE and must to be taken into account during total EE estimation; however, the type of method employed did not change the anaerobic contribution or total EE estimates.

Physiological aspects and energetic contribution in 20s:10s high-intensity interval exercise at different intensities

“…However, the results have a similar reduction in anaerobic systems participation and an increase in the aerobic system participation. Recently, Panissa et al (2018) studied a short-form of HIIE, and their findings also reinforced the raising of aerobic contribution during HIIE. Most of the findings regarding energy systems contributions could be related to training volume, total effort duration, or, specifically in HIIE, the sum of repeated efforts (Buchheit & Laursen, 2013b).…”

Peripheral BDNF and psycho-behavioral aspects are positively modulated by high-intensity intermittent exercise and fitness in healthy women

“…Moreover, the results suggested that BDNF concentration may be related to lactate accumulation, since it is inferred that muscle lactate is capable of crossing the blood–brain barrier and inducing an increase in BDNF via activation of Sirtuin1 deacetylase (SIRT1), with consequent increases in peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC1α) and the secreted molecule FNDC5 (myokine gene that mediate BDNF release) 26 ; however, there was no correlation between blood lactate concentration after HIIE and serum BDNF (Follicular phase: r 2 = − 0.24, p = 0.40; Luteal phase: r 2 = 0.05; p = 0.85). One possible explanation for this result is the measurement of blood lactate concentration after HIIE, as the passive intervals between the sprints may underestimate the real concentration of the 10 high intensity sprints of HIIT 27 .…”

Magnitude and duration of excess of post‐exercise oxygen consumption between high‐intensity interval and moderate‐intensity continuous exercise: A systematic review

“…As the present review did not examine EE through exercise, the outcomes raised are only related to EPOC, and it is important to note that greater EPOC values do not necessarily represent greater EE within a given training session (exercise plus EPOC). Furthermore, some studies did not compute energy from anaerobic sources in high‐intensity protocols, which may have underestimated total EE, 42,43 particularly following SIE protocols that present a high anaerobic demand 44,45 . Past investigations have demonstrated that when volume (e.g., distance covered or work done) is matched, EE during HIIE may be greater than MICE 46,47 ; however, the contrary may also occur, whereby similar EE values are potentially representative of lower training volume during HIIE 42 …”