Upper Respiratory Tract Infection Clinical Trial
Official title:
Combined Vitamins and Minerals Decrease Incidence of Upper Respiratory Tract Infections in Older Persons
Nutrient deficiency and immune dysfunction in older persons result in high prevalence of acute respiratory infection,which can lead to impaired nutritional status. The study objective was to determine the effect of multi micro-nutrient supplementation on nutritional and upper respiratory infection among apparently healthy community-dwelling elderly. The main hypothesis was whether daily multi micro-nutrient supplementation could reduce the incidence and prevalence of upper respiratory infection among apparently healthy community-dwelling older persons. Inclusion criteria were apparently independent healthy male and female older persons aged 60 years and over, not taking multi micro-nutrient supplementation over the last month. The study design was a community-based double-blind controlled trial involving 296 community-dwelling older persons aged 60 and above, in the Mampang Prapatan district, South Jakarta. Participants were randomized to receive either 40 mg elemental zinc (as gluconate), 120 mg ascorbic acid, 6 mg B-carotene, 15 mg alpha tocopherol (as d-alpha-tocopheryl acid succinate) and 400 micrograms folic acid (intervention group) or 400 mg calcium carbonate (control group). Supplements were taken daily for six months, from August 2008 to March 2009. Nutritional and health status were measured before and after supplementation. Poisson regression analysis was used to evaluate the effects of daily multi micro-nutrient supplementation on the incidence and prevalence of upper respiratory infection.
Poor nutritional status of older persons may predispose them to increased risk of upper
respiratory tract infection, which however should be amenable to reduction by multi
micro-nutrient supplementation. For becoming a successful healthy aging individual, the
interrelationship between endogenous and exogenous factors must be positive and balanced.
Introducing multi micro-nutrients through supplementation is an alternative which ensures a
balanced micro-nutrient intake for enhancing the immune response and at the same time
possibly enhancing the quality of life of the healthy free-living elderly individual.
The role of nutritional intervention strategies have been shown to be beneficial in the
prevention of infectious disease among the older population in order to reduce the burden of
diseases, and also could prevent micro-nutrient deficiency and enhance immune response of
older persons.
The present study is related to primary prevention activities which aim to enhance the
health status of the subjects, in particular to reduce the incidence and prevalence rate of
infectious diseases, especially of upper respiratory tract infection. Supplementation is
operationally achievable for implementation at the health center and could be set within the
existing programs for older persons.
;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Prevention
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