Sleep
Conditions
Brief summary
The goal of this clinical trial is to assess the effect of eating before bed (2 hours after dinner, 30mins before bed) and the effects this has on sleep and recovery measures in elite female athletes. Participants will be randomized to 4 possible groups in a double-blind randomized cross over design. Each group will ingest 40 grams of one of the following nutrients as a liquid shake for 3 consecutive nights: 1. Casein Protein 2. a-lactalbumin Protein 3. Carbohydrate 4. Placebo There will be at least 1 week washout period between each intervention. Sleep and recovery outcome measures will be obtained through a WHOOP 4.0 wearable healthy tracking device. Subjective sleep and recovery will be obtained through subjective questionnaires. Food will be logged by participants on intervention days. Blood glucose will be measured using continuous glucose monitors.
Interventions
DIETARY_SUPPLEMENTCasein protein
40 grams of casein protein powder mixed with 8-10 fl. oz. of water.
DIETARY_SUPPLEMENTa-lactalbumin protein
40 grams of a-lactalbumin protein powder mixed with 8-10 fl. oz. of water.
DIETARY_SUPPLEMENTCarbohydrate
40 grams of a carbohydrate powder mixed with 8-10 fl. oz. of water.
DIETARY_SUPPLEMENTPlacebo
Zero calorie, placebo powder mixed with 8-10 fl. oz. of water.
Sponsors
Milk Specialties Global
Florida State University
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
DOUBLE (Subject, Investigator)
Masking description
Neither the participant or investigator will know what treatment has been given until un-blinding at the completion of the study.
Intervention model description
All participants will complete all 4 interventions with at least a 1 week wash out period in between.
Eligibility
Sex/Gender
FEMALE
Age
18 Years to 25 Years
Healthy volunteers
No
Inclusion criteria
* NCAA Division I female athlete * Wearing WHOOP 4.0 device for \>3 months
Exclusion criteria
* Musculoskeletal injuries limiting participation in regular team practice. * Cardiometabolic diseases limiting participation in regular team practice. * Pre-diagnosed sleep condition that would negatively affect sleep quality or quantity (sleep apnea, restless leg syndrome, night-feeding syndrome) * Allergy to any dietary supplement used in protocol - e.g., lactose intolerant. * Use of sleep aids such as but not limited to, melatonin.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Sleep | Data obtained from device 12 hours after ingestion of supplement | Sleep score determined by WHOOP 4.0 wearable device |
| Recovery | Data obtained from device 12 hours after ingestion of supplement | Recovery score determined by WHOOP 4.0 wearable device |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Subjective sleep score | Data obtained 1-2 hours after after subject awakes | Subjective sleep score obtained from questionnaire |
| Subjective recovery score | Data obtained 1-2 hours after after subject awakes | Subjective sleep score obtained from questionnaire |
| Blood glucose control | Continuous (24hours/day) during intervention days/nights | Using the continuous glucose monitor, participants blood glucose response throughout the day and night relative to regular meals and intervention will be observed. |
Countries
United States
Outcome results
None listed