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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Nutritional Assessment and Nutritional Knowledge of Lifesavers, Ironmen and Lifeguards

Anderson, Rhonda Margaret, n/a January 2001 (has links)
Despite surf lifesavers being national icons of good health and good nutrition, surprisingly little factual information is known about the nutritional status of this unique aquatic fellowship. The purpose of this study was to investigate the nutritional intake and nutritional knowledge of three distinct groups of Australian surf lifesavers. Weighed food diaries are commonly used to assess the nutritional intake of athletes but this method has the disadvantage of a heavy respondent burden. Individuals being investigated must be literate and highly motivated to keep accurate records of food and drinks consumed. Food frequency questionnaires (FFQ) offer an alternative assessment method to weighed food records as they are relatively quick and easy to complete and do not require a high level of literacy. A secondary purpose of this study was to compare seven-day weighed food diaries with a FFQ that had already been validated for use with an older mixed gender population. The nutrient intakes of 60 members of Surf Lifesaving Australia were measured. Nineteen, who were professional lifeguards completed a FFQ. Thirty lifesavers and 11 surf ironmen each completed the FFQ, a seven-day weighed food diary and a nutritional knowledge questionnaire consisting of 15 multiple choice questions. There were significant differences between the three groups in age and activity with ironmen being significantly younger (mean age 22.9yrs) and significantly more physically active (mean 134mins/day) than either lifesavers (mean age, 31.3yrs, mean activity 46min/day) or lifeguards (mean age 35.8yrs, mean activity 65min/day). There were no significant differences in these parameters between lifesavers and lifeguards. The seven-day food diary revealed significant differences in nutrient intake between lifesavers and ironmen. Lifesavers consumed 1 1,807kJ, 125g protein (1.6g/kg) and 327g carbohydrate (4.Og/kg) while ironmen consumed 14,69/kJ, 1519 protein (1.9g/kg) and 4629 carbohydrate (5.6g/kg). Lifesavers and ironmen exceeded the RDIs for all vitamins and minerals measured. The seven day food diary demonstrated significant differences between the lifesavers and ironmen in energy, protein, fat, carbohydrate, alcohol, thiamin, niacin, calcium and iron. When the nutrient analysis data set for the FFQ was checked this method of dietary assessment was found to be unreliable as greater than 20 per cent of subjects were identified as being under-reporters. Lifesavers and ironmen both had good scores on the nutritional knowledge questionnaire and were able to identify groups of foods as being rich sources of fat, fibre, protein and iron. Ironmen were better able to answer questions specifically related to sport nutrition. All three groups meet the current recommendations for daily physical activity. Lifesavers and ironmen meet the current recommendations for, protein, fibre, vitamin and mineral intake and consume alcohol at levels within the current health guidelines. Ironmen have the highest carbohydrate intake which meets the current general health recommendations but consume less than the current special recommendations of sport nutritionists while lifesavers consume only 44% of energy as carbohydrate. These results suggest that while the both lifesavers and ironmen consume a relatively healthy diet only the surf ironmen could possibly be considered nutritional icons.
2

Predictors of taste acuity in healthy older Europeans

Simpson, E.E.A., Rae, G., Parr, H.J., O'Connor, J.M., Bonham, M., Polito, A., Meunier, N., Andriollo-Sanchez, M., Intorre, F., Coudray, C., Strain, J.J., Stewart-Knox, Barbara January 2012 (has links)
This study aimed to identify factors associated with taste acuity in healthy older European adults aged 55-87 years, employing a factorial independent design to recruit older adults from centres in France, Italy and United Kingdom. Adults aged 70-87 years (N=387) were recruited in Rome (Italy) (n=108) and Grenoble (France) (n=91) and aged 55-70 years in Northern Ireland (United Kingdom) (n=93) and Clermont-Ferrand (C-F) (France) (n=95). A signal detection theory (SDT) approach was used for detection threshold assessment of the four basic tastes (salt; sweet; bitter; and, sour). Trial data were converted to R-indices. Diet was assessed by means of four day food diaries. Dietary data were converted using WISP and then reduced, using a principal components analysis, to four components: Component 1 'high fat and salt'; Component 2 'high vitamins and fibre'; Component 3 'high fat and carbohydrate'; and, Component 4 'high trace elements'. Socio-demographic information was collected by self report survey. Four separate regression analyses were carried out, one for each of the four basic taste qualities (sweet; sour; bitter; salt). Mean ROC scores for each taste quality were the response variables and age, sex, country, social class and dietary components were predictor variables. The main predictors of taste acuity were age, sex, social class and country, which had differential effects for each taste quality. These data suggest that socio-demographic and cultural factors should be taken into account when considering taste acuity in older people.

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