A Perceptually-regulated Exercise Test Predicts Peak Oxygen Uptake in Older Active Adults

2015 ◽  
Vol 23 (2) ◽  
pp. 205-211 ◽  
Author(s):  
Ashleigh E. Smith ◽  
Roger G. Eston ◽  
Belinda Norton ◽  
Gaynor Parfitt

Peak oxygen uptake (V̇O2peak) is reliably predicted in young and middle-aged adults using a submaximal perceptually-regulated exercise test (PRET). It is unknown whether older adults can use a PRET to accurately predict V̇O2peak. In this study, the validity of a treadmill-based PRET to predict V̇O2peak was assessed in 24 participants (65.2 ± 3.9 years, 11 males). The PRET required a change in speed or incline corresponding to ratings of perceived exertion (RPE) 9, 11, 13, and 15. Extrapolation of submaximal V̇O2 from the PRET to RPE endpoints 19 and 20 and age-predicted HRmax were compared with measured V̇O2peak. The V̇O2 extrapolated to both RPE19 and 20 over-predicted V̇O2peak (p < .001). However, extrapolating V̇O2 to age-predicted HRmax accurately predicted V̇O2peak (r = .84). Results indicate older adults can use a PRET to predict V̇O2peak by extrapolating V̇O2 from submaximal intensities to an age-predicted HRmax.

2009 ◽  
Vol 46 (6) ◽  
pp. 1150-1153 ◽  
Author(s):  
Jeremy B. J. Coquart ◽  
Christine Lemaire ◽  
Alain-Eric Dubart ◽  
Claire Douillard ◽  
David-Pol Luttenbacher ◽  
...  

2014 ◽  
Vol 44 (5) ◽  
pp. 563-578 ◽  
Author(s):  
Jérémy B. Coquart ◽  
Murielle Garcin ◽  
Gaynor Parfitt ◽  
Claire Tourny-Chollet ◽  
Roger G. Eston

2015 ◽  
Vol 23 (2) ◽  
pp. 205-211
Author(s):  
Ashleigh E. Smith ◽  
Roger G. Eston ◽  
Belinda Norton ◽  
Gaynor Parfitt

2016 ◽  
Vol 116 (6) ◽  
pp. 1189-1195
Author(s):  
Danielle Lambrick ◽  
Haley Bertelsen ◽  
Roger Eston ◽  
Lee Stoner ◽  
James Faulkner

2020 ◽  
Vol 45 (1) ◽  
pp. 61-66
Author(s):  
Tatiane Piucco ◽  
Julia Phillips ◽  
Jordan Finnie ◽  
Andrew Rados ◽  
Ricardo Dantas de Lucas

The aim of this study was to assess the physiological and neuromuscular responses at critical skating intensity on a slide board and to investigate the correlations between critical cadence (CC) and skating performances on ice. Thirteen well-trained speed skaters (age,19.8 ± 4.2 years; weight, 69.6 ± 9.06 kg) performed a maximal skating incremental test (IT) on a slide board. CC was determined from 3 to 4 trials to exhaustion lasting from 3.1 ± 0.7 to 13.9 ± 3.1 min, using linear and hyperbolic mathematical fittings. A time to exhaustion test at CC (TTE-CC) was performed. CC values (55.3 ± 5.0 ppm) were significantly higher than cadence at the respiratory compensation point (RCP) (53.5 ± 4.0 ppm). Mean duration of TTE-CC was 22.9 ± 4.8 min. Peak values of oxygen uptake, heart rate (HR), ventilation, respiratory exchange ratio (RER), and ratings of perceived exertion (RPE) during TTE-CC were significantly lower (p < 0.05) than the peak values reached during the IT. Oxygen uptake, HR, ventilation, RER, and RPE significantly increased from 25% to 100% of TTE-CC. Muscle activity (integrated electromyography) significantly increased after 75% of TTE-CC for vastus lateralis and gluteus maximus muscles. Oxygen uptake at CC was better associated to skating performance on 500, 1000, 1500, and 5000 m than peak oxygen uptake at IT and oxygen uptake at RCP. Physiological responses indicate that critical skating intensity on slide board occurred within the heavy exercise domain where oxygen uptake increases but does not reach its maximum. Critical cadence could be used as a better indicator of performance and training prescription for long track speed skating distances.


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