Prediction of Heart Rate and Oxygen Uptake During Incremental and Maximal Exercise in Healthy Adults

Spiroergometrische Referenzwerte für die sozialmedizinische Leistungsbeurteilung bei Erwachsenen im Alter über 60 Jahre

“…Eine minütliche Steigerung der Belastung mittels Rampenprotokoll führten Pothoff et al [5] und Neder et al [11] durch, was mit einer teilweise deutlich niedrigeren maximalen Sauerstoffaufnahme einherging. Fairbarn et al [10] führ-ten ebenfalls eine Ergometrie mit minütlicher Steigerung um 16 W durch. Eine gute Übereinstimmung fand sich zur Probandengruppe der 60-bis 69-Jährigen, während in der älteren Gruppe der 70-bis 80-Jährigen wie die von Neder et al [11] berichteten Werte knapp unter den in unserer Studie ermittelten Werten der maximalen Sauerstoffaufnahme lagen.…”

Relationship between work rate and oxygen uptake in mitochondrial myopathy during ramp-incremental exercise

“…Although O 2 is an appropriate dependent variable, this relationship has been traditionally described with HR on the y-axis (22,23). In this context, a steeper HR response to a given metabolic demand would imply reduced stroke volume and/or low peripheral oxygen extraction (i.e., an inappropriate cardiovascular response to incremental exercise).…”

“…For the determination of this index of ventilatory "efficiency" (21)(22)(23), linear regression analysis was applied only to the individually selected data points below the RCP (i.e., before the development of the characteristic hyperventilatory response to the ongoing lactacidemia).…”

Assessing the human cardiovascular response to moderate exercise: feature extraction by support vector regression

“…However, Reeves (Reeves et al 1961a) (Reeves et al 1961b) investigated the circulatory changes in normal people during rest and during mild supine exercise and suggested that the linear relationship between cardiac output and oxygen uptake existed during supine rest, but for variations in metabolic demands ranging from rest to heavy exercise, there was not a simple linear relationship. For the heart rate response to oxygen uptake rate, a linear relationship was found by the researchers (Fairbarn et al 1994) (Turley & Wilmore 1997). However, for the other cardiovascular variables such as stroke volume (SV) and total peripheral resistance (TPR), the earlier reports (Reeves et al 1961b) (Richard et al 2004) (Rowland, Popowski & Ferrone 1997) (Reeves, Grover & Filley 1961) (Dexter et al 1951) (Astrand et al 1964) described the nonlinear behaviour of the change of oxygen uptake rate during graded levels of exercise, but no suitable models were presented.…”

“…The cardiovascular response to exercise has been widely documented by several investigators (Dexter, Whittenberger, Haynes, Goodale, Gorlin & Sawyer 1951) (Barger, Richards, Metcalfe & Gunther 1956) (Freedman, Snider, Brostoff, Kimelblot & Katz 1955) (Reeves, Grover, Filley & Blount 1961a) (Reeves, Grover, Filley & Blount 1961b) (Rowland, Popowski & Ferrone 1997) (Kobayashi, Andoh, Fujinami, Nakayama, Takada, Takeuchi & Okamoto 1978) (Reeves, Grover & Filley 1961) (Bevegard, Freyschuss & Strandell 1966) (Astrand, Cuddy, Saltin & Stenberg 1964) (Denniston, Maher, Reeves, Cruz, Cymerman & Grover 1976) (Stenberg, Astrand, Ekblom, Royce & B 1967) (Turley & Wilmore 1997) (Fairbarn, Blackie, McElvaney, Wiggs, Pare & Pardy 1994) (Allor, Pivarnik, Sam & Perkins 2000) (Richard, Lonsdorfer-wolf, Dufour, Doutreleau, OswaldMammosser, Billat & Lonsdorfer 2004). Some of the reports demonstrated a linear function between the cardiac output (CO) and oxygen uptake rate during steady state of graded exercise, with a slope of approximately 5-6 in normal and athletic subjects (Rowell 1986).…”