Development of an Instrument to Evaluate the Intake of Liquids, Food and Supplements in Endurance Competitions: Nutritional Intake Questionnaire for Endurance Competitions-NIQEC

BACKGROUND

In the last few years endurance sports have experienced a great increase in the number of competitions and participants. Dietary-nutritional planning is key for performing well during such competitions. To date, there is no questionnaire expressly developed to be able to analyze the consumption of liquids, foods, and supplements, as well as gastrointestinal problems in these events. This study describes the development of the Nutritional Intake Questionnaire for Endurance Competitions (NIQEC).

METHODS

The study was composed in the following phases: (1) Bibliographic search for the most important nutrients, (2) focus groups (17 dietitian-nutritionists and 15 experienced athletes) and generation of items, (3) Delphi surveys, and (4) cognitive interviews.

RESULTS

After an initial shaping of the questionnaire with the items that emerged in the focus groups, their relevance was evaluated by means of the Delphi survey, which showed more than 80% approval for most items. Finally, the cognitive interviews indicated that the questionnaire was simple and complete for its purpose. The final NIQEC (n = 50 items) was divided in 5 sections: Demographic data; sports data; consumption of liquids, food and supplements before, during, and after the competition; gastrointestinal complaints, and dietary-nutritional planning for the competition.

CONCLUSIONS

The NICEQ is a useful tool that allows collecting information from participants on sociodemographic factors and gastrointestinal complaints, and estimating the intake of liquid, food, and supplements, for endurance competitions.

Do Spanish Triathletes Consume Sports Supplements According to Scientific Evidence? An Analysis of the Consumption Pattern According to Sex and Level of Competition

Background: The use of sports supplements (SS) to improve sports performance is very common in athletes. In the case of triathletes, the physiological characteristics of the sport may require the use of certain SS. Although the consumption of SS is widespread in this sport, very few studies have investigated it thus far. The aim is to analyze the pattern of SS consumption by triathletes according to sex and the competitive level. Methodology: This is a descriptive cross-sectional study on the consumption and habitual use of SS of 232 Spanish-federated triathletes. Data were collected through a validated questionnaire. Results: Overall, 92.2% of the athletes consumed SS, but no significant differences were found in terms of competition level or sex. Yet, significant differences were found regarding the level of competition for total SS (p = 0.021), the total number of Group A supplements from the AIS classification (p = 0.012), and for the ergogenic aids (p = 0.003). The most-consumed SS were bars, sports drinks, sports gels, and caffeine (83.6%, 74.1%, 61.2%, and 46.6%, respectively). Conclusions: The consumption of SS by triathletes is high, and the number of SS consumed rises from the regional to the national and international levels. The four SS most consumed were included in category A of the AIS (greatest scientific evidence).

[Mediterranean and Western dietary patterns in adult population of a Mediterranean area; a cluster analysis]

OBJECTIVE

To identify dietary patterns among participants in a representative nutritional survey in the Valencia Community, and to analyze the association with socio-demographic characteristics and lifestyles.

METHODS

Data for this study were from 1803 participants (973 women) in the Nutrition and Health Survey conducted in 1994 on a representative sample of adult population of Valencia Community. Diet was assessed by a validated food frequency questionnaire. Foods intakes were adjusted for 1,000 calories and grouped in 26 groups. Cluster analysis was used to identify dietary patterns using standardized values of the variables (z-scores).

RESULTS

Three dietary patterns were identified and labeled as follows: the Prudent pattern (57.2%), characterized by a low-medium intake of most food of groups; the Mediterranean pattern (29.1%) characterized by high intake of fruits, vegetables, fish, poultry, cheese, and legumes; and the Western pattern (13.7%) characterized by high intake of meat and processed meats, high fat content foods, sweets and sugar, beverages, and alcoholic beverages. The Mediterranean pattern obtained higher scores for known diet quality index defined a priori. Using the Mediterranean pattern as reference, Western pattern included significantly more young people, higher number of men and smokers, and the Prudent pattern higher number of men, lower physical activity and lower alcohol consumption.

CONCLUSION

Three dietary patterns were identified among participants in the Nutrition Survey of Valencia conducted in the mid-1990S: Prudent, Mediterranean and Western. The Prudent pattern was the most prevalent; the Mediterranean pattern was associated with healthier lifestyles and behaviors; and the Western pattern, the less prevalent although more frequently followed by youth, men and smokers. Further Nutrition Surveys should be carried out to make nutritional surveillance and analyze health effects of these observed patterns.