Consommation d'oxygène et consommation maximale d'oxygène : intérêts et limites de leur mesure

Vandewalle, Henry

doi:10.1016/j.annrmp.2004.05.014

Cited by 8 publications

(1 citation statement)

References 61 publications

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“…In all mechanical energy estimations, the actual amount of work performed is underestimated, as additional metabolic work resulting from isometric muscle contractions or antagonist co-contractions is not taken into account (Fetters and Holt 1990;Winter 2005). This problem is overcome when assessing metabolic energy, that is, by measuring oxygen consumption during walking (Fetters and Holt 1990;Vandewalle 2004). The relation between metabolic cost and the mechanical work performed by stance limb muscles to lift and accelerate the CoM during walking has been already demonstrated (Donelan et al 2001(Donelan et al , 2002a and has been considered a valid predictor of walking performance (Anderson and Pandy 2001).…”

Section: Movement Efficiencymentioning

confidence: 97%

Biomechanical and neurophysiological mechanisms related to postural control and efficiency of movement: A review

Sousa

Silva

Tavares

2012

Somatosensory & Motor Research

106

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Understanding postural control requires considering various mechanisms underlying a person's ability to stand, to walk, and to interact with the environment safely and efficiently. The purpose of this paper is to summarize the functional relation between biomechanical and neurophysiological perspectives related to postural control in both standing and walking based on movement efficiency. Evidence related to the biomechanical and neurophysiological mechanisms is explored as well as the role of proprioceptive input on postural and movement control.

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Section: Movement Efficiencymentioning

confidence: 97%

Biomechanical and neurophysiological mechanisms related to postural control and efficiency of movement: A review

Sousa

Silva

Tavares

2012

Somatosensory & Motor Research

106

View full text Add to dashboard Cite

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Prediction of Maximal or Peak Oxygen Uptake from Ratings of Perceived Exertion

et al. 2014

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Maximal or peak oxygen uptake (V˙O2 max and V˙O2 peak , respectively) are commonly measured during graded exercise tests (GXTs) to assess cardiorespiratory fitness (CRF), to prescribe exercise intensity and/or to evaluate the effects of training. However, direct measurement of CRF requires a GXT to volitional exhaustion, which may not always be well accepted by athletes or which should be avoided in some clinical populations. Consequently, numerous studies have proposed various sub-maximal exercise tests to predict V˙O2 max or V˙O2 peak . Because of the strong link between ratings of perceived exertion (RPE) and oxygen uptake (V˙O2), it has been proposed that the individual relationship between RPE and V˙O2 (RPE:V˙O2) can be used to predict V˙O2 max (or V˙O2 peak) from data measured during submaximal exercise tests. To predict V˙O2 max or V˙O2 peak from these linear regressions, two procedures may be identified: an estimation procedure or a production procedure. The estimation procedure is a passive process in which the individual is typically asked to rate how hard an exercise bout feels according to the RPE scale during each stage of a submaximal GXT. The production procedure is an active process in which the individual is asked to self-regulate and maintain an exercise intensity corresponding to a prescribed RPE. This procedure is referred to as a perceptually regulated exercise test (PRET). Recently, prediction of V˙O2max or V˙O2 peak from RPE:V˙O2 measured during both GXT and PRET has received growing interest. A number of studies have tested the validity, reliability and sensitivity of predicted V˙O2 max or V˙O2 peak from RPE:V˙O2 extrapolated to the theoretical V˙O2 max at RPE20 (or RPE19). This review summarizes studies that have used this predictive method during submaximal estimation or production procedures in various populations (i.e., sedentary individuals, athletes and pathological populations). The accuracy of the methods is discussed according to the RPE:V˙O2 range used to plot the linear regression (e.g., RPE9–13 versus RPE9–15 versus RPE9–17 during PRET), as well as the perceptual endpoint used for the extrapolation (i.e., RPE19 and RPE20). The V˙O2 max or V˙O2 peak predictions from RPE:V˙O2 are also compared with heart rate-related predictive methods. This review suggests that V˙O2 max (or V˙O2 peak ) may be predicted from RPE:V˙O2 extrapolated to the theoretical V˙O2 max (or V˙O2 peak) at RPE20 (or RPE19). However, it is generally preferable to (1) extrapolate RPE:V ˙ O 2 to RPE19 (rather than RPE20); (2) use wider RPE ranges (e.g. RPE ≤ 17 or RPE9–17) in order to increase the accuracy of the predictions; and (3) use RPE ≤ 15 or RPE9–15 in order to reduce the risk of cardiovascular complications in clinical populations.

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Age-related changes in mechanical and metabolic energy during typical gait

et al. 2010

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The purpose of the study was to investigate and report age-related changes in walking energy expenditure using different methods of energy estimation. For 81 children and 16 adults (3-35 years) energy expenditure was investigated by using the following methods: analysis of energy changes of the centre of body mass (external and internal mechanical work), sum of segmental energies, sum of net joint work and gross and net metabolic cost, as well as net non-dimensional oxygen cost. Different methods of energy estimation not only show different outcome results but also different age-related changes. Significant changes were found for negative net joint work, external mechanical work and recovery as well as sum of segmental energies, until 9, 11 and 19 years respectively. Positive net joint work showed no differences between age groups and the differences for internal work did not suggest development. Metabolic energy showed significant changes until adult age. Gross cost decreases with increasing age in children and, although more gradually, still in adolescents. Net and net non-dimensional cost shows a more constant decrease with increasing age until adulthood. Therefore, the choice of estimation method and the use of age-related reference data when evaluating young patients should be carefully considered. For interpretation of oxygen consumption in children the use of net is superior to gross cost, but even after net non-dimensional normalization, age-related reference data should be used.

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Consommation d'oxygène et consommation maximale d'oxygène : intérêts et limites de leur mesure

Cited by 8 publications

References 61 publications

Biomechanical and neurophysiological mechanisms related to postural control and efficiency of movement: A review

Biomechanical and neurophysiological mechanisms related to postural control and efficiency of movement: A review

Prediction of Maximal or Peak Oxygen Uptake from Ratings of Perceived Exertion

Age-related changes in mechanical and metabolic energy during typical gait

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