Phosphocreatine kinetics in humans during exercise and recovery

Variation and homogeneity in affective responses to physical activity of varying intensities: An alternative perspective on dose – response based on evolutionary considerations

“…These, in turn, have been linked to several processes that contribute to fatigue, including the accelerated breakdown of creatine phosphate (McCann, Mollé, & Caton, 1995), the inhibition of glycolysis and glycogenolysis (Spriet, Lindinger, McKelvie, Heigenhauser, & Jones, 1989), the inhibition of lipolysis (Boyd, Giamber, Mager, & Lebovitz, 1974) and the interference with the calcium triggering of muscle contractions (Favero, Zable, Bowman, Thompson, & Abramson, 1995). In addition, lactic acidosis stimulates the release of catecholamines (Goldsmith, Iber, McArthur, & Davies, 1990), and thus the lactate threshold has been found to occur in close proximity to a catecholamine threshold (Urhausen, Weiler, Coen, & Kindermann, 1994;Weltman et al, 1994).…”

Oxygen Uptake Kinetics During Exercise

“…[10] Since it is difficult to directly measure muscle O 2 utilisation in humans, the measure of the dynamic changes in PCr levels by nuclear magnetic resonance (NMR) spectroscopy is a common approach to estimate the metabolic rate in the active muscles. Most NMR studies [37][38][39] have demonstrated that the pattern of the PCr dynamic adjustments both at the onset and during the recovery after moderate exercise is first-order exponential. Recently, Barstow et al [40] compared PCr and V .…”

An Optimal Interset Rest Period For Strength Recovery During A Common Isokinetic Test

“…Historically, basic research has primarily looked at exercise recovery in controlled laboratory settings using isometric and exhausting dynamic exercise (Bigland-Ritchie, Jones, Hosking, & Edwards, 1978;Bogdanis, Nevill, Boobis, Lakomy, & Nevill, 1995;Boska, Moussavi, Carson, Weiner, & Miller, 1990;Harris, Edwards, Hultman, Nordesjo, Nylind, & Sahlin, 1976;Hultman, Bergstrom & McLennan Anderson, 1967;McCann, Mole, & Caton, 1995;Nassar-Gentina, Passonneau, Vergara & Rapoport, 1978;Nosek, Fender, & Godt, 1987;Spande & Schottelius, 1970;Takahashi, Inaki, Fujimoto, Katsuta, Anno, Niitsu, et al, 1995).…”

“…Several of these studies looked at recovery of isolated animal (Nassar-Gentina, et al, 1978;Nosek, et al, 1987;Spande & Schottelius, 1970) and human muscles (Bigland-Ritchie et al, 1978;Bogdanis et al, 1995;Boska et al, 1990;Harris et al, 1976;Hultman et al, 1967;McCann et al, 1995;Takahashi et al, 1995) in which the modes of contraction were not specific to the types of contraction typically used in strength training or testing. Many of the earlier findings on exercise recovery were based on various anaerobic exercises such as isometrics (Boska et al, 1990), electrical stimulation (Bigland-Ritchie et al, 1978), over-ground sprinting (Balsom, Seger, Sjodin, & Ekblom, 1992), or cycle sprinting (Bogdanis et al, 1995).…”

“…On the contrary, basic research provides a direct measure of the exact underlying physiological processes (e.g. PCr recovery kinetics) that occur during strength recovery through muscle biopsy (Harris et al, 1976;Hultman et al, 1967) or a more recent and noninvasive procedure known as phosphorus nuclear magnetic resonance (P-NMR) spectroscopy (McCann et al, 1995;Takahashi et al, 1995). In applied research, these underlying physiological processes are only implicated based on the indirect measures of peak torque or reproducibility of strength performance.…”