Trial reportBritish journal of sports medicine2002
Lactic acidosis, potassium, and the heart rate deflection point in professional road cyclists.
Trial report in British journal of sports medicine, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed.
- Effects of a single dose of beetroot juice on cycling time trial performance at ventilatory thresholds intensity in male triathletes.Journal of the International Society of Sports Nutrition · 2018Trial
- Research application of session-RPE in monitoring the training load of elite endurance athletes.Frontiers in neuroscience · 2024Article
- Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience.PloS one · 2018Article
- Intra- and inter-observer reliability in selection of the heart rate deflection point during incremental exercise: comparison to a computer-generated deflection point.Journal of sports science & medicine · 2002Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo determine the influence of lactic acidosis, the Bohr effect, and exercise induced hyperkalaemia on the occurrence of the heart rate deflection point (HRDP) in elite (professional) cyclists.
methodsSixteen professional male road cyclists (mean (SD) age 26 (1) years) performed a ramp test on a cycle ergometer (workload increases of 5 W/12 s, averaging 25 W/min). Heart rate (HR), gas exchange parameters, and blood variables (lactate, pH, P(50) of the oxyhaemoglobin dissociation curve, and K(+)) were measured during the tests.
resultsA HRDP was shown in 56% of subjects at about 88% of their maximal HR (HRDP group; n = 9) but was linear in the rest (No-HRDP group; n = 7). In the HRDP group, the slope of the HR-workload regression line above the HRDP correlated inversely with levels of K(+) at the maximal power output (r = -0.67; p<0.05).
conclusionsThe HRDP phenomenon is associated, at least partly, with exercise induced hyperkalaemia.
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