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The Effects of a Zeaxanthin Intervention on Visuomotor Function

University of Georgia (UGA) logo

University of Georgia (UGA)

Status

Completed

Conditions

Behavior and Behavior Mechanisms

Treatments

Dietary Supplement: zeaxanthin
Dietary Supplement: combinatory supplement

Study type

Interventional

Funder types

Other
Industry

Identifiers

NCT02017418
2012-10531

Details and patient eligibility

About

This study was designed to test whether two zeaxanthin formulations (supplements containing different nutritional compounds with zeaxanthin and omega fatty acids being the primary ingredients of interest) influenced visual motor function. Visual motor function refers to the processing speed of the visual system and how individuals respond behavioral to visual stimuli (e.g., reaction time).

Full description

This study was designed to test whether two zeaxanthin formulations (supplements containing different nutritional compounds with zeaxanthin and omega fatty acids being the primary ingredients of interest) influenced visual motor function. Visual motor function refers to the processing speed of the visual system and how individuals respond behavioral to visual stimuli (e.g., reaction time).

Enrollment

102 patients

Sex

All

Ages

18 to 40 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • Age: ≥18 and ≤ 40 years
  • BMI: ≥ 20 and ≤ 30 kg/m2
  • No anticipated changes in dieting habits (as relevant to the intake of xanthophylls and fats/oils).
  • No anticipated surgical procedures.
  • Willingness and ability to give written informed consent and willingness and ability to comply with the study requirements.
  • Corrected visual acuity (ETDRS): better than 20/60 in the eye selected for the study

Exclusion criteria

  • Smokers
  • Current or history of relevant ocular diseases (such as AMD) or other conditions e.g., lipid disorders.
  • Inability to reliably perform macular pigment optical density measurements by "Heterochromatic Flicker Photometry" or any of the other ophthalmic tests of the study.
  • Any condition likely to interfere with normal gastro-intestinal absorption of xanthophylls (e.g., digestive disorders: inflammatory bowel disease, ulcerative colitis, Crohn's, irritable bowel, etc. or lipid disorders including conditions such as hypercholesterolemia)
  • Current use of xanthophyll containing supplements or use of xanthophyll containing supplements in the past 6 months (but excluding multivitamins containing lutein or zeaxanthin at low potency).
  • Participation in any other study during last 1 month before study initiation.
  • Known hypersensitivity or allergy to xanthophylls.
  • Regular intake of medications or supplements, which the principal investigator deems likely to confound the study outcomes. These include diabetes medication and statins or any other drug/supplement to modulate cholesterol or fat digestion/absorption.

Trial design

Primary purpose

Basic Science

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Double Blind

102 participants in 2 patient groups

zeaxanthin
Experimental group
Description:
placebo zeaxanthin
Treatment:
Dietary Supplement: zeaxanthin
combinatory supplement
Active Comparator group
Description:
placebo combinatory supplement
Treatment:
Dietary Supplement: combinatory supplement

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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