| 1. |
- Wisén, Anita, et al.
(författare)
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A comparison between two exercise tests on cycle; a computerised test versus the Åstand test.
- 1995
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Ingår i: Clin Physiol. ; 15:1, s. 91-102
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Tidskriftsartikel (refereegranskat)abstract
- Two submaximal cycle ergometer test methods, the Astrand nomogram test and a computerized two-point extrapolation test (Cat Eye ergociser, commercially available), were compared in order to determine agreement and repeatability of estimates of maximum oxygen consumption (VO2max). Twenty healthy women, divided into two groups of ten according to their age (mean 35.3 and mean 46.9), performed test-retest with each method. In both methods the VO2max was estimated from workload and the corresponding heart rate. The correlation between the VO2max using the two methods was high (r = 0.85, P < 0.001). Some of the estimates derived from the computerized test had large errors, which reduced the agreement between the tests. The variation (2SD), expressed in per cent of mean VO2max was 19% for the Astrand test and 34% for the computerized test. Furthermore, the computerized test underestimated the VO2max with approximately 5 ml kg-1 min-1 compared with the Astrand test. Due to this underestimation and the greater variation of the VO2max in the computerized test, it is not recommended to use the two methods interchangeably in clinical practice.
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| 2. |
- Wisén, Anita, et al.
(författare)
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Exercise testing using a cycle or treadmill: a review of various protocols.
- 1999
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Ingår i: Physical Therapy Reviews. - 1743-288X. ; 4, s. 7-20
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Tidskriftsartikel (refereegranskat)abstract
- Abstract: In order to evaluate physical capacity it is neccesary to choose an appropriate method depending on the condition of the subject being tested and on the purpose of testing. A review has been carried out in order to present some of the protocols for evaluating exercise capacity which are in practical use. Twenty different test protocols for evaluating exercise capacity; 12 cycle protocols, six treadmill protocols and two protocols including both cycle and treadmill, are described in detail, as well as some of the physiological background of the tests. When testing subjects with reduced physical capacity, a protocol starting with a low work load and small increments is preferred. The test results can be reported as achieved oxygen uptake (V˙O2), metabolic equivalents (METs)or achieved work load (W). When testing healthy subjects and athletes, submaximal tests which estimate maximal oxygen uptake (V˙O2max) may be used. If high accuracy is required direct measurements of V˙O2 or V˙O2max are most reliable, regardless of which protocol is used.
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