Effects of 8 wk of 16:8 Time-restricted Eating in Male Middle- and Long-Distance Runners
Brady AJ, Langton HM, Mulligan M, Egan B
Medicine and science in sports and exercise · 47 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Randomized controlled trial (indexed by PubMed)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Funding not disclosed
Publication
- Published
- 2020-08-13 · Med Sci Sports Exerc · vol. 53 · issue 3 · pp. 633–642
- Publisher
- Lippincott Williams & Wilkins
- Cited
- 68 citations · more than 94% of similar papers · 3.8× the field average
- Impact
- Top 10% most cited in its field
- References
- 36 works
- Access
- Paywalled
- Research areas
- Dietary Effects on Health · Muscle metabolism and nutrition · Physical Activity and Health
- Keywords
- Respiratory exchange ratio, Medicine, VO2 max, Animal science, Athletes, Triglyceride, Confidence interval, Heart rate, Physical therapy, Internal medicine, Blood pressure, Cholesterol, Biology
- MeSH
- humans, lactic acid, insulin, blood glucose, triglycerides, exercise test, fasting, feeding behavior, body composition, energy intake, eating, physical endurance, running, time factors, adult, middle aged, male, young adult
4 authors
From IE, AU, US
- Aidan J. BradyDublin City University
- HENRY M. LANGTONDublin City University
- MOLLIE MULLIGANUniversity College Dublin; Agriculture and Food; Dublin City University
- Brendan EganFlorida Institute for Human and Machine Cognition; Dublin City University
Abstract
Purpose
Eight weeks of time-restricted eating (TRE) in concert with habitual exercise training was investigated for effects on body composition, energy and macronutrient intakes, indices of endurance running performance, and markers of metabolic health in endurance athletes.
Methods
Male middle- and long-distance runners (n = 23) were randomly assigned to TRE (n = 12) or habitual dietary intake (CON; n = 11). TRE required participants to consume all of their dietary intake within an 8-h eating window (so-called 16:8 TRE), but dietary patterns, food choices, and energy intake were ad libitum during this window. Participants continued their habitual training during the intervention period. Participants completed an incremental exercise test before (PRE) and after (POST) the 8-wk intervention for the assessment of blood lactate concentrations, running economy, and maximal oxygen uptake. Fasted blood samples were analyzed for glucose, insulin, and triglyceride concentrations. Dietary intake was assessed at PRE, MID (week 4), and POST using a 4-d semiweighed food diary.
Results
Seventeen participants (TRE, n = 10; CON, n = 7) completed the intervention. Training load did not differ between groups for the duration of the intervention period. TRE resulted in a reduction in body mass (mean difference of -1.92 kg, 95% confidence interval = -3.52 to -0.32, P = 0.022). Self-reported daily energy intake was lower in TRE at MID and POST (group-time interaction, P = 0.049). No effect of TRE was observed for oxygen consumption, respiratory exchange ratio, running economy, blood lactate concentrations, or heart rate during exercise, nor were there any effects on glucose, insulin, or triglyceride concentrations observed.
Conclusion
Eight weeks of 16:8 TRE in middle- and long-distance runners resulted in a decrease in body mass commensurate with a reduction in daily energy intake, but it did not alter indices of endurance running performance or metabolic health.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
Community trust
Loading…
How much do you trust this study's findings?
Comments
Sign in to rate, comment on or flag this study.Sign inSomething wrong here?
Flag this study if its information, labels or funding look wrong. An editor reviews every flag.
Sign in to rate, comment on or flag this study.Sign inEducational information about published research. Not medical advice, and not a recommendation to start or stop anything.