Clinical Trial Details
— Status: Completed
Administrative data
NCT number |
NCT05409092 |
Other study ID # |
22-0100 |
Secondary ID |
|
Status |
Completed |
Phase |
N/A
|
First received |
|
Last updated |
|
Start date |
January 19, 2022 |
Est. completion date |
December 30, 2022 |
Study information
Verified date |
June 2023 |
Source |
Appalachian State University |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
Vigorous exercise can stress the body. Consuming special types of diet supplements may help
the body recover better from exercise. This includes a bright red supplement called
astaxanthin that is found in certain algae and causes the pink-red color in salmon.
Astaxanthin is an antioxidant and may protect cells from damage and improve the way the
immune system functions. The main purpose of this study is to determine if 4 weeks of
consuming astaxanthin improves recovery from 2.25 hours of intensive running on a treadmill.
This study will also measure whether or not astaxanthin supplementation improves skin health
Description:
RESEARCH PROCEDURES The research procedures will be conducted at the Human Performance
Laboratory (Room 1201, Plants for Human Health Institute Building, 600 Laureate Way),
operated by Appalachian State University at the North Carolina Research Campus (NCRC) in
Kannapolis, NC. Subjects will come to the Human Performance Lab (HPL) for
orientation/baseline testing with pre-supplementation blood sample collections, two 2.25 h
running sessions, and additional lab visits to provide 1-day 7:00 am recovery blood samples)
(thus 6 total performance lab visits). Skin health measurements will occur the morning before
and during Performance Lab Visits #1, 2, 4, 5 (thus 8 total visits, with four of them
occurring with HPL visits and four of them occurring separately). The total amount of time
subjects will be asked to volunteer for this study is about 16 hours at the North Carolina
Research Campus (over a 10-week period).
Orientation/Baseline Testing (Performance Lab Visit #1) Four weeks prior to the first 2.25 h
running session, subjects will report to the Human Performance Laboratory at approximately
7:00-8:30 am. Skin health measurements will be conducted the day before (following review of
the consent form, with signing) and the day of baseline testing. Following the second skin
health measurement, demographic and training histories will be acquired with questionnaires.
A symptom inventory will be conducted using a 4-week retrospective questionnaire. Delayed
onset of muscle soreness (DOMS) and the Profile of Mood States (POMS) will be assessed with
standardized questionnaires. A blood sample will be collected in an overnight fasted state to
coincide with the same time of the day for the post-supplementation blood draw. Body
composition will be measured with the seca BIA and Bod Pod body composition analyzer (Life
Measurement, Concord, CA). Study participants will be tested for maximal aerobic capacity
(VO2max) during a graded, treadmill test with the Cosmed CPET metabolic device (Cosmed, Rome,
Italy). Supplements for the 4-week supplementation period will be supplied in food supplement
trays to facilitate compliance to the supplementation protocol. 3-day food records and the
food list will be supplied with thorough instructions (for the 3-day period prior to the 2.25
hour treadmill running sessions).
4-Week Supplementation Periods Study participants will be randomized to astaxanthin and
placebo groups, with supplements ingested daily (with the first meal) for 4-weeks prior to
participation in the first 2.25 h running session. To assess potential adverse effects, a
symptom inventory will be conducted using a 4-week retrospective questionnaire before and
after the 4-week supplementation period. After a 2-week washout period, participants will
repeat all procedures using the counterbalanced supplement. The astaxanthin and placebo
supplements will look identical and be supplied by the sponsor. The astaxanthin capsule will
contain 8 mg of astaxanthin from freshwater algae in starch beadlets, and the placebo
capsules will contain just the starch beadlets with natural red coloring from the pitaya
fruit. Four ounces of sockeye salmon contains about 4.5 milligrams of astaxanthin, with much
higher levels in arctic shrimp and krill. Natural astaxanthin is sold around the world as a
natural antioxidant supplement with a recommended dosage of 4 mg to 12 mg a day. LycoRed
sources astaxanthin from Haematococcus pluvialis, a freshwater algae species of Chlorophyta
from the family Haematococcaceae. This species is well known for its high content of the
strong antioxidant astaxanthin, which is important in aquaculture, and cosmetics.
2.25 h Running Session (Performance Lab Visit #2, Skin Health Tests #3, #4) During the 3-day
period prior to the 2.25 h running session, subjects will taper exercise training and ingest
a moderate-carbohydrate diet using a food list restricting high fat foods, visible fats, and
polyphenols. Subjects will record all food and beverage intake during the 3-day period, with
macro- and micro-nutrient intake assessed using the Food Processor dietary analysis software
system (ESHA Research, Salem, OR).
Skin health measurements will be conducted the day before and the day of the running session
(#3, #4) (overnight fasted state). Study participants will report to the Human Performance
Lab in an overnight fasted state, take the skin health tests, provide a blood sample, ingest
astaxanthin or the placebo supplement with water, then run 2.25 h at high intensity (70%
VO2max) while ingesting water alone (3 ml/kg every 15 minutes). Blood samples will be
collected at 0 h, 1.5 h, 3 h, and 21 h post-exercise.
2-WEEKS WASHOUT, CROSSOVER, REPEAT Subjects will engage in a 2-week washout period without
supplements, crossover, and then repeat all procedures (Skin tests #4 through #8; Performance
Lab visits #4,5,6). NOTE: Subjects randomized during the first trial to astaxanthin will have
6 weeks of washout when counting the 4-week placebo period.