Why Do Athletes Choose Dietary Supplements? Reliability and Validity of the Dietary Supplement Choice Questionnaire (DSCQ) among Japanese College Athletes

Kakutani, Yuya; Koiwa, Akane; Kamiya, Saori; Ono, Miho; Sasahara, Ikuko; Omi, Naomi

doi:10.3177/jnsv.65.343

Cited by 8 publications

(4 citation statements)

References 15 publications

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“…It was observed that the majority of the athletes did not prefer to use ergogenic support, and the rate of those who preferred was 24.6%. It is known that 'popularity, functionality, price, taste, convenience, antidoping and familiarity' are among the reasons for adolescent athletes prefer ergogenic supplements (Kakutani et al, 2019). In a study conducted in Türkiye, including adolescent martial athletes, it was determined that 22.6% of the athletes used ergogenic support, and they used ergogenic supports to 'improve performance, lose weight, increase muscle mass, increase energy level, health and satiety' (Çamaşırcı, 2020).…”

Section: Discussionmentioning

confidence: 99%

Adolesan Sporcularin Ergojeni̇k Destek Kullaniminda, Fi̇zi̇ksel Ve Mental Yorgunluk Düzeyi̇ni̇n Yordayiciliği

GÜLER,

AKPINAR

2023

Ankara Üniversitesi Beden Eğitimi Ve Spor Yüksekokulu SPORMETRE Beden Eğitimi Ve Spor Bilimleri Dergisi

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Being involved in the developmental period of adolescent athletes may cause more energy and fatigue levels. At this point, the correct and appropriate use of ergogenic supports can contribute to athletes. The study aims to reveal the predictors of fatigue and physical activity levels in adolescent athletes' use of ergogenic support. 171 (female: 98, male: 73) licensed athletes from the Provincial Directorate of Youth and Sports participated in the research voluntarily. Demographic information questionnaire, International Physical Activity Questionnaire-short form (IPAQ-SF), and Chalder Fatigue Scale were used in the research. The data collected in the study were analyzed in the Jamovi (2.0.0) statistical program at a 95% confidence interval and 0.05 significance level. In the analysis of the data, frequency (N), mean (x̄), standard deviation (ss), percentage (%), minimum (Min.), and maximum (Max.) values, Pearson's correlation and binomial logistic regression analysis were used. According to the findings of the study, most of athletes do not prefer to use ergogenic support. Those who use ergogenic support mostly use sports drinks, fish oil, and protein powder. Fatigue and total MET levels do not predict the use of ergogenic support by athletes. As a result, it can be said that adolescent athletes do not prefer to use ergogenic support and although their total MET scores are high, their fatigue levels are at a normal level.

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Section: Discussionmentioning

confidence: 99%

Adolesan Sporcularin Ergojeni̇k Destek Kullaniminda, Fi̇zi̇ksel Ve Mental Yorgunluk Düzeyi̇ni̇n Yordayiciliği

GÜLER,

AKPINAR

2023

Ankara Üniversitesi Beden Eğitimi Ve Spor Yüksekokulu SPORMETRE Beden Eğitimi Ve Spor Bilimleri Dergisi

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“…An examiner explained the general purpose and outline of the survey to participants who were college athletes belonging to the club of the university. Details of the study design and participant characteristics have been reported elsewhere (13).…”

Section: Methodsmentioning

confidence: 99%

Development of Dietary Information Literacy Scale for Competition (DILS-C) in Japanese College Athletes

Kakutani

Murata

Koiwa

et al. 2021

J Nutr Sci Vitaminol

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This study aimed to examine the scale for reliability and validity of the dietary information literacy scale for competition (DILS-C) in college athletes. This cross-sectional study was performed using a self-report questionnaire for college athletes who belong to the club of the university located in Ibaraki prefecture, Japan, from October to December 2014. The final sample comprised 953 college athletes, 684 males and 269 females, aged 18 to 22 y. Following item selection by exploratory factor analysis, the scale's reliability and validity were examined via internal consistency and confirmatory factor analysis. Furthermore, a retest for 376 athletes was conducted at about 3-wk intervals. Factor analysis of literacy measure indicated that the scale consists two sub-scales-communicative literacy and critical literacy. The Cronbach's a coefficient assessing the internal consistency reliability was acceptable (communicative literacy50.84, critical literacy50.79). Excellent goodness-offit indices of communicative and critical literacy were obtained by confirmatory factor analysis (GFI50.95, AGFI50.92, CFI50.95, RMSEA50.08). Retest reliability was within an allowable range (communicative literacy ICC50.52, critical literacy ICC50.50). The present study suggested that the reliability and factorial validity were confirmed in the DILS-C in college athletes.

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“…This cross-sectional study was performed with a selfwritten questionnaire for college athletes who belonged to the sports club of the University of Tsukuba (Ibaraki, Japan) from October to December 2014. Details of the study design and participant characteristics have been reported elsewhere (10).…”

Section: Participants and Study Designmentioning

confidence: 99%

Development of Burden Scale for Dietary Behavior Appropriate for College Athletes

et al. 2022

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Background: This study aimed to develop the decisional balance scale for dietary behavior appropriate for college athletes and to examine the scale for reliability and validity. Methods: The cross-sectional study was performed using a self-report questionnaire for college athletes who belong to the sports club of a university located in Ibaraki, Japan, from October to December 2014. The final sample comprised 982 college athletes (704 males and 278 females) aged 18 to 22 years. Following item selection by exploratory factor analysis, the scale’s reliability and validity were examined by internal consistency, confirmatory factor analysis, and association of stage of change with the scale score. Furthermore, a retest for 378 athletes was conducted after about a 3-week interval. Results: Nine items (4 troublesome items, 3 repressed items, 2 compulsory items) classified for three types of burden factors were obtained through factor analysis. There were significant differences according to the stage of change in the troublesome and repressed factors (P < 0.05), consistent with the transtheoretical model. As a result of confirmatory factor analysis with two factors, excluding the compulsory factor, we obtained higher goodness of fit (GFI = 0.99, AGFI = 0.97, CFI = 0.97, RMSEA = 0.06). The Cronbach’s alpha coefficient and the intra-class correlation in each factor were as follows: troublesome = 0.73/0.66, repressed = 0.69/0.61. In addition, we observed moderate consistency for the retesting stage of change (kappa coefficient = 0.50). Conclusions: The present study suggested sufficient reliability and validity, which were confirmed in the burden scale for dietary behavior appropriate for college athletes.

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Why Do Athletes Choose Dietary Supplements? Reliability and Validity of the Dietary Supplement Choice Questionnaire (DSCQ) among Japanese College Athletes

Cited by 8 publications

References 15 publications

Adolesan Sporcularin Ergojeni̇k Destek Kullaniminda, Fi̇zi̇ksel Ve Mental Yorgunluk Düzeyi̇ni̇n Yordayiciliği

Adolesan Sporcularin Ergojeni̇k Destek Kullaniminda, Fi̇zi̇ksel Ve Mental Yorgunluk Düzeyi̇ni̇n Yordayiciliği

Development of Dietary Information Literacy Scale for Competition (DILS-C) in Japanese College Athletes

Development of Burden Scale for Dietary Behavior Appropriate for College Athletes

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