ArticleSports medicine - open2019
A Comparison of Methodological Approaches to Measuring Cycling Mechanical Efficiency.
Article in Sports medicine - open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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Who cites it
14 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Heavy strength training effects on physiological determinants of endurance cyclist performance: a systematic review with meta-analysis.European journal of applied physiology · 2026Pooled it
- NAD+-Precursor Supplementation With L-Tryptophan, Nicotinic Acid, and Nicotinamide Does Not Affect Mitochondrial Function or Skeletal Muscle Function in Physically Compromised Older Adults.The Journal of nutrition · 2021Trial
- 35 Years of Joyner's Endurance Performance Model: Assessing the Contribution of Physiological Determinants of Performance Proxies in 888 Individuals from Recreational to World Class.Sports medicine (Auckland, N.Z.) · 2026Article
- The energy expenditure and substrate oxidation of treadmill running and cycle ergometer exercise in normal-weight and obese men.BMC sports science, medicine & rehabilitation · 2026Article
- Home-Based Exercise Improves Muscle Oxidative Capacity in Kidney Disease.Kidney international reports · 2026Article
- The repeated bout effect of traditional resistance training on cycling efficiency and performance.European journal of applied physiology · 2024Article
- Article
- Invasive and noninvasive markers of human skeletal muscle mitochondrial function.Physiological reports · 2023Article
- Skeletal muscle mitochondrial inertia is associated with carnitine acetyltransferase activity and physical function in humans.JCI insight · 2023Article
- Healthy aging and muscle function are positively associated with NADNature aging · 2022Article
- Biophysical characterization of the first ultra-cyclist in the world to break the 1,000 km barrier in 24-h non-stop road cycling: A case report.Frontiers in cardiovascular medicine · 2022Article
- Metabolic Flexibility and Mechanical Efficiency in Women Over-60.Frontiers in physiology · 2022Article
- Impact of aging and exercise on skeletal muscle mitochondrial capacity, energy metabolism, and physical function.Nature communications · 2021Article
- Severe loss of mechanical efficiency in COVID-19 patients.Journal of cachexia, sarcopenia and muscle · 2021Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMuch is known about theoretical bases of different mechanical efficiency indices and effects of physiological and biomechanical factors to them. However, there are only a few studies available about practical bases and interactions between these efficiency indices, which were the aims of the present study.
methodsFourteen physically active men (n = 12) and women (n = 2) participated in this study. From the incremental test, six different mechanical efficiency indices were calculated for cycling work: gross (GE) and net (NE) efficiencies, two work efficiencies (WE), and economy (T) at 150 W, and in addition delta efficiency (DE) using 3-5 observation points.
resultsIt was found that the efficiency indices can be divided into three groups by Spearman's rank correlation: GE, T, and NE in group I; DE and extrapolated WE in group II; and measured WE in group III. Furthermore, group II appeared to have poor reliability due to its dependence on a work-expended energy regression line, which accuracy is poorly measured by confidence interval.
conclusionAs efficiency indices fall naturally into three classes that do not interact with each other, it means that they measure fundamentally different aspects of mechanical efficiency. Based on problems and imprecisions with other efficiency indices, GE, or group I, seems to be the best indicator for mechanical efficiency because of its consistency and unambiguity. Based on this methodological analysis, the baseline subtractions in efficiency indices are not encouraged.
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