Effects of a Time Restricted Eating Protocol on Cyclists (TRECYC)
- Conditions
- Fasting and Performance
- Interventions
- Other: Time restricted eatingOther: Control
- Registration Number
- NCT04320784
- Lead Sponsor
- University of Padova
- Brief Summary
We sought to investigate the effects of 4 weeks of 16/8 time restricted eating (TRE) with windows of 16 hours of fasting and 8 hours of eating) on elite cyclists' performance, metabolic and blood parameters.
- Detailed Description
Sixteen elite under-23 cyclists were randomly assigned to a TRE group or to a control group (CTRL) with a traditional meal pattern. The TRE group consumed 100% of its estimated daily energy needs in an 8-hour time window: from 10:00 AM (ante meridiem) to 6:00 PM (post meridiem) whilst the CTRL group consumed 100% of its estimated daily energy needs in 3 meals between 7:00 AM and 9:00 PM. During the experimental period, training loads were similar in the two groups. Athletes were tested before and after 4 weeks of the intervention. Body composition , basal metabolism, performances indexes and blood parameters were measured.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- Male
- Target Recruitment
- 16
- elite under 23 cyclists male
- adherence to special diets
- use of nutritional supplements (except a daily multivitamin-mineral and/or protein supplement)
- use of medications
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Time restricted eating (TRE) Time restricted eating TRE group consumed 100% of its estimated daily energy needs in an 8-hour time window: from 10:00 AM to 6:00 PM Control (CTRL) Control CTRL group consumed 100% of its estimated daily energy needs in 3 meals between 7:00 AM and 9:00 PM
- Primary Outcome Measures
Name Time Method lean body mass 4 weeks lean body mass mass measured through body impedence analyser
VO2max 4 weeks Maximal oxygen consumption (in ml O2/Kg/min) measured during a cycloergometer incremental test through a gas analyses
fat mass 4 weeks fat mass measured through body impedence analyser
- Secondary Outcome Measures
Name Time Method Eosinophils 4 weeks Eosinophils as percentage of total white blood cells
Basophiles 4 weeks Basophiles s percentage of total white blood cells
mean cell haemoglobin 4 weeks mean cell haemoglobin as picograms
white blood cells 4 weeks white blood cells as thousands per microliter
Monocytes 4 weeks Monocytes as percentage of total white blood cells
Mean cell volume 4 weeks mean cell volume as femtonLiter
TG (triglycerides) 4 weeks TG as milligram per deciliter
Hematocrit 4 weeks Hematocrit as percentage
CRP (C-reactive protein) 4 weeks CRP as milligram per deciliter
glucose 4 weeks glucose as milligram per deciliter
creatinine 4 weeks creatinine as milligram per deciliter
Testosterone free 4 weeks Testosterone free as picogram per milliliter
IGF-1 4 weeks IGF-1 as nanogram per milliliter
ESR (Erythrocyte sedimentation rate ) 4 weeks ESR as millimeters per hour
Total cholesterol 4 weeks Total cholesterol as milligram per deciliter
iron 4 weeks iron as microgram per deciliter
transferrin 4 weeks ferritin as milligram per deciliter
TSH (Thyroid Stimulating Hormone) 4 weeks TSH as micro international unit per milliliter
T3 (triiodothyronine) free 4 weeks T3 free as picogram per milliliter
Haemoglobin 4 weeks Haemoglobin as gram per Liter
creatin kinase 4 weeks creatin kinase as milligram per deciliter
ferritin 4 weeks ferritin as microgram per liter
IL-6 4 weeks IL-6 as picogram per milliliter
TNFalfa 4 weeks TNFalfa as picogram per milliliter
Insulin 4 weeks Insulin micro international unit per milliliter
Trial Locations
- Locations (1)
Nutrition and Exercise Lab, DSB, University of Padova
🇮🇹Padova, Italy