Effect of lutein with milk on physical activity

Not Applicable

Completed

• Conditions: physical inactivity; Diet and Nutrition - Obesity

• Registration Number: ACTRN12611000248965
• Lead Sponsor: Meiji Dairies Corporation

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2011-03-07
• Last Update Posted: 13 January 2020

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 44

Inclusion Criteria

Aged between 60 and 80 yrs Not currently participating in sufficient physical activity levels to meet Australia guidelines BMI between 18.5 and 29.9 kg/m2

Exclusion Criteria

Typically consume more than two standard serves of dairy products per day
Non weight-stable (body weight change of >3 kg in last 3 months)
Acute or terminal illness
Moderate or severe cognitive impairment (inability to understand and provide written informed consent and/or follow instructions)
Any medical condition that might be exacerbated by exercise or might limit exercise training
Current smoker or only recently quit smoking (smoked any cigarettes within the last 12 months)
Alcohol consumption (more than four alcoholic drinks per day)
Coeliac disease
Lactose intolerance
Allergy to cow’s milk protein
Diabetes
Medications (or supplements) changed significantly during the last 12 weeks
Consume carotenoids (lutein, astaxanthin, zeaxanthin) supplements daily
Any other condition which in the opinion of the investigators might confound the outcomes of the study

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Physical activity levels (measured using accelerometry)[An accelerometer will be worn the week prior to beginning supplementation (Week -1) and again after 4 weeks of supplementation (Week 4).]

Secondary Outcome Measures

Name	Time	Method
Physical activity levels (step counts from pedometer)[Pedometers will be worn for the entire 5 week study period and daily step counts will be recorded];Self-efficacy to regulate exercise will be assessed using a validated questionnaire portraying different levels of exercise task demands against which participants rate the strength of their belief in their ability to perform their exercise routine regularly using a 100 point scale. The higher the total score the greater the exercise-self efficacy.[Exercise self-efficacy will be assessed at the start of Week -1 and again a week later before supplementation begins (week 0) and then again after one week of supplementation (Week 1) and again at the end of the study period (Week 4)];Blood concentration of lutein[fasting blood samples will be taken at baseline (Week -1) and at the end of the study period (Week 4)]