ArticleEndocrine connections2017
HIIT produces increases in muscle power and free testosterone in male masters athletes.
Article in Endocrine connections, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 4 of them syntheses that pooled it.
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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
20 citing papers in PubMed, 4 syntheses or guidelines pooled it, 49 citations in OpenAlex.
- Effect of High-Intensity Interval Training on Functional Movement in Older Adults: A Systematic Review and Meta-analysis.Sports medicine - open · 2023Pooled it
- High-Intensity Interval Training (HIIT) in Hypoxia Improves Maximal Aerobic Capacity More Than HIIT in Normoxia: A Systematic Review, Meta-Analysis, and Meta-Regression.International journal of environmental research and public health · 2022Pooled it
- Effects of Exercise Training on Anabolic and Catabolic Hormones with Advanced Age: A Systematic Review.Sports medicine (Auckland, N.Z.) · 2022Pooled it
- Characterization of Hormonal, Metabolic, and Inflammatory Responses in CrossFit® Training: A Systematic Review.Frontiers in physiology · 2020Pooled it
- The effects of three types of exercise training on steroid hormones in physically inactive middle-aged adults: a randomized controlled trial.European journal of applied physiology · 2021Trial
- Effects of High-Intensity Interval Training on Steroid Hormones and Psychological Outcomes in Healthy Male Adolescents: A Randomized Controlled Trial.Sports (Basel, Switzerland) · 2026Article
- Designing an mHealth App to Encourage Uptake of Muscle-Strengthening Exercise in Older Adults: Co-Design Focus Group Study.JMIR aging · 2026Article
- Understanding the Secular Decline in Testosterone: Mechanisms, Consequences, and Clinical Perspectives.International journal of molecular sciences · 2026Review
- The effects, mechanisms, and influencing factors of concurrent strength and endurance training with different sequences: a semi-systematic review.Frontiers in sports and active living · 2025Review
- Aerobically trained older adults show impaired resting, but preserved exercise-induced circulating progenitor cell count, which was not improved by sprint interval training.Pflugers Archiv : European journal of physiology · 2023Article
- Exercise-related changes in the anabolic index (testosterone to cortisol ratio) and serum amyloid A concentration in endurance and racehorses at different fitness levels.Frontiers in veterinary science · 2023Article
- The Effect of High-Intensity Interval Training Periods on Morning Serum Testosterone and Cortisol Levels and Physical Fitness in Men Aged 35-40 Years.Journal of clinical medicine · 2021Article
- Effect of the order of concurrent training combined with resistance and high-intensity interval exercise on mTOR signaling and glycolytic metabolism in mouse skeletal muscle.Physiological reports · 2021Article
- Short-Term and Lifelong Exercise Training Lowers Inflammatory Mediators in Older Men.Frontiers in physiology · 2021Article
- High Intensity Interval Training (HIIT) as a Potential Countermeasure for Phenotypic Characteristics of Sarcopenia: A Scoping Review.Frontiers in physiology · 2021Article
- Changes in Health and Physical Fitness Parameters After Six Months of Group Exercise Training in Firefighters.Sports (Basel, Switzerland) · 2020Article
- Article
- Gender Differences in Chronic Hormonal and Immunological Responses to CrossFitInternational journal of environmental research and public health · 2019Article
- Peak Power Output Is Similarly Recovered After Three- and Five-Days' Rest Following Sprint Interval Training in Young and Older Adults.Sports (Basel, Switzerland) · 2019Article
- Short-Term Exercise Training Inconsistently Influences Basal Testosterone in Older Men: A Systematic Review and Meta-Analysis.Frontiers in physiology · 2018Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
High-intensity interval training (HIIT) improves peak power output (PPO) in sedentary aging men but has not been examined in masters endurance athletes. Therefore, we investigated whether a six-week program of low-volume HIIT would (i) improve PPO in masters athletes and (ii) whether any change in PPO would be associated with steroid hormone perturbations. Seventeen male masters athletes (60 ± 5 years) completed the intervention, which comprised nine HIIT sessions over six weeks. HIIT sessions involved six 30-s sprints at 40% PPO, interspersed with 3 min active recovery. Absolute PPO (799 ± 205 W and 865 ± 211 W) and relative PPO (10.2 ± 2.0 W/kg and 11.0 ± 2.2 W/kg) increased from pre- to post-HIIT respectively (
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.