BACKGROUND: Polycystic Ovary Syndrome (PCOS) is an endocrine disrupting disorder affecting at least 10 percent of reproductive-aged women. In many cases, women develop comorbidities such as diabetes, cardiovascular disease, and other metabolic disorders. In North America and Europe, it takes several years and multiple doctors for women to receive a diagnosis of PCOS. This results in lost time for risk-reducing interventions. Menstrual tracking applications are one potential tool to alert women of their risk for PCOS and prompt them to seek further evaluation from a medical professional. OBJECTIVE: The objective was to develop the Irregular Cycles Feature (ICF) on the mobile phone application Clue®, which generates a probability of a user’s risk for PCOS. The secondary aim was to assess the accuracy of the tool by testing the feature on virtual test subjects. METHODS: A literature review was conducted to generate a list of signs and symptoms of PCOS. Probabilities were assigned to each variable and built into a Bayesian Network. The Irregular Cycles Feature, an adaptive questionnaire, was then developed in order to detect high-risk PCOS patients. The ICF detected at risk Clue® users through self-reported menstrual cycles and answers to medical history questions. Upon completion of the questionnaire, a Result Screen is displayed to the user. The Screen is a summary of the individual’s probability of having PCOS. For each eligible user, a Doctor’s Report is also generated. This is a screen containing information regarding menstrual irregularities and a brief medical history to be used by a medical professional in order to make a final diagnosis. Both the Result Screen and Doctor’s Report disclose information about PCOS and detailed explanations for consulting a medical provider. A brief statistical validation was then performed to compare the output of the network to predictions made by a physician-scientist using a correlation coefficient, a p-value, and a Pearson’s coefficient. RESULTS: The Irregular Cycles Feature successfully predicts probability of PCOS based on eight test cases. The correlation between the network’s calculation and the assessment made by a board-certified reproductive endocrinology/infertility physician-scientist was 0.82, with a p-value of less than 0.05. The Pearson’s coefficient was calculated to be 0.69. These values indicate that the ICF made statistically significant predictions when compared to the physician-scientist. CONCLUSIONS: The ICF provides consumer-friendly ways to improve interactions between medical providers and patients. The tool can be adapted to capture other causes of menstrual irregularities and can serve as an important mechanism for drawing attention to potentially hazardous health problems. Further validation studies will be conducted to confirm the utility of the ICF with Clue® users, particularly amongst those who receive an official diagnosis from a medical professional. / 2020-06-17T00:00:00Z

Adolescentes apresentam rápido crescimento e intensas mudanças corporais que os tornam vulneráveis em termos nutricionais. A prática de restrições alimentares, bastante comum entre adolescentes, pode levar a inadequações nutricionais que parecem ser o primeiro sinal para o início de uma desordem alimentar (DA). A participação feminina no esporte e o número de casos de DA em adolescentes atletas de modalidades que exigem exposição do corpo, agilidade e leveza dos movimentos, como o tênis, têm aumentado nos últimos anos. As DA podem levar a complicações de saúde como irregularidades menstruais (IM) e baixa densidade mineral óssea (DMO), caracterizando a Tríade da Mulher Atleta (TMA). Desta forma, acredita-se que alguns componentes dietéticos podem ter associação com DA e seus agravos. O objetivo do presente estudo foi avaliar a associação de componentes dietéticos com desordens alimentares, irregularidades menstruais e composição corporal em adolescentes atletas tenistas e não atletas do sexo feminino. Trata-se de estudo do tipo transversal. Foram realizadas avaliações do desenvolvimento puberal pela auto-aplicação dos critérios de Tanner; da composição corporal pela absortometria radiológica de dupla energia (DXA); dos parâmetros dietéticos por registro alimentar de três dias alternados; das DA pela aplicação de três questionários validados (Eating Attitudes Test - EAT-26, Bulimic Investigatory Test, Edinburgh- BITE e o Body Shape Questionnaire - BSQ); do ciclo menstrual por questionário validado e da DMO também pelo DXA. A Tríade da Mulher Atleta (TMA) foi estabelecida pela presença concomitante de DA e/ou baixa disponibilidade de energia (BDE), IM e baixa DMO. Foram realizadas associações por meio de correlações de Spearman entre as variáveis numéricas de componentes dietéticos com DA e composição corporal. Também foram realizadas associações por meio do teste qui-quadrado, teste exato de Fisher ou prova binomial para as variáveis categóricas de adequação dos componentes dietéticos com DA e seus agravos. Participaram do estudo 75 adolescentes (25 tenistas, 50 não atletas) apresentando desenvolvimento puberal similar. Atletas obtiveram melhor perfil da composição corporal quanto ao tecido adiposo. Quanto à ingestão de macronutrientes, os carboidratos merecem destaque. Em ambos os grupos, a maioria das participantes apresentaram baixa ingestão de carboidratos, sendo este percentual de inadequação significativamente maior para as atletas. Os micronutrientes que obtiveram maior percentual de inadequação foram folato e cálcio em ambos os grupos. Verificou-se que 92%, 32% e 24% das atletas e 72%, 8% e 30% das não atletas preencheram critérios para DA e/ou BDE, IM e baixa massa óssea, respectivamente. Apesar de adolescentes atletas tenistas e não atletas apresentarem prevalência de DA similares, as não atletas apresentaram maior insatisfação com a imagem corporal pelo teste BSQ. No entanto, as atletas parecem estar em situação mais grave uma vez que apresentaram maior prevalência de BDE e de IM. A DMO e a prevalência de TMA foram similares entre os grupos. Foi verificada associação inversa e significativa entre alguns componentes dietéticos (principalmente energia e carboidratos) e os escores do teste BSQ. Foi possível concluir que a baixa ingestão de alguns componentes dietéticos, principalmente energia e carboidratos, podem funcionar como marcadores para desordens alimentares em ambos os grupos a fim de previnir posteriores consequências à saúde / Adolescents have a rapid growth and and intense body changes that make them vulnerable in nutritional terms. The practice of dietary restrictions, quite common among adolescents, can lead to nutritional inadequacies that appear to be the first signal for the start of disordered eating (DE). The female sports participation and the number of DE cases in adolescent athletes from sports that require bodys exposure, agility and soft movements, like tennis, have increased in recent years. DE can lead to serious health complications such as menstrual irregularities (MI) and low bone mineral density (BMD), constituting the female athlete Triad (FAT). Thus, it is believed that certain dietary components may be associated with DE and its complications. The aim of this study was to evaluate the association of dietary components with disordered eating, menstrual irregularities and body composition in female adolescent tennis players and controls. This was a cross-sectional study. We carried out assessments of pubertal development by Tanner stage self-assessments; body composition by dual energy x-ray absorptiometry (DXA); dietary parameters by three-day food records; DE by the application of three validated questionnaires (Eating Attitudes Test - EAT-26, Bulimic Investigatory Test, Edinburgh- BITE and the Body Shape Questionnaire - BSQ), menstrual status through a validated questionnaire and BMD also by DXA. The Female athlete Triad (FAT) was established by the concomitant presence of DE and/or low energy availability (LEA), MI and low BMD. Associations were performed using Spearman`s correlations between numerical variables of dietary components with DE and body composition. Also associations were performed using chi-square test, Fisher's exact test or binomial test for categorical variables of dietary components adequacy with DE and its complications. The study enrolled 75 adolescents (25 female tennis players, 50 controls) presenting with similar pubertal development. Athletes had better body composition profile, regarding the adipose tissue. As for the intake of macronutrients, carbohydrates are noteworthy. In both groups, most participants had low intake of carbohydrates, being this frequency of inadequacy significantly higher for athletes. Micronutrients with the greatest percentage of inadequacy were folic acid and calcium in both groups. It was found that 92%, 32% and 24% of the athletes and 72%, 8% and 30% of controls met the criteria for DE and / or LEA, MI, low bone mass, respectively. Although adolescent tennis players and controls present with similar prevalence of DA, the controls showed greater dissatisfaction with body image by BSQ test. However, the athletes seem to be in a more serious situation since they had a higher prevalence of LEA and MI. BMD and the prevalence of FAT were similar between groups. Significant inverse association was found between some dietary components (mainly energy and carbohydrates) and scores of BSQ test. It was concluded that low dietary intakes of some dietary components, mainly energy and carbohydrates, may function as markers for disordered eating in both groups in order to prevent further health consequences

Adolescentes apresentam rápido crescimento e intensas mudanças corporais que os tornam vulneráveis em termos nutricionais. A prática de restrições alimentares, bastante comum entre adolescentes, pode levar a inadequações nutricionais que parecem ser o primeiro sinal para o início de uma desordem alimentar (DA). A participação feminina no esporte e o número de casos de DA em adolescentes atletas de modalidades que exigem exposição do corpo, agilidade e leveza dos movimentos, como o tênis, têm aumentado nos últimos anos. As DA podem levar a complicações de saúde como irregularidades menstruais (IM) e baixa densidade mineral óssea (DMO), caracterizando a Tríade da Mulher Atleta (TMA). Desta forma, acredita-se que alguns componentes dietéticos podem ter associação com DA e seus agravos. O objetivo do presente estudo foi avaliar a associação de componentes dietéticos com desordens alimentares, irregularidades menstruais e composição corporal em adolescentes atletas tenistas e não atletas do sexo feminino. Trata-se de estudo do tipo transversal. Foram realizadas avaliações do desenvolvimento puberal pela auto-aplicação dos critérios de Tanner; da composição corporal pela absortometria radiológica de dupla energia (DXA); dos parâmetros dietéticos por registro alimentar de três dias alternados; das DA pela aplicação de três questionários validados (Eating Attitudes Test - EAT-26, Bulimic Investigatory Test, Edinburgh- BITE e o Body Shape Questionnaire - BSQ); do ciclo menstrual por questionário validado e da DMO também pelo DXA. A Tríade da Mulher Atleta (TMA) foi estabelecida pela presença concomitante de DA e/ou baixa disponibilidade de energia (BDE), IM e baixa DMO. Foram realizadas associações por meio de correlações de Spearman entre as variáveis numéricas de componentes dietéticos com DA e composição corporal. Também foram realizadas associações por meio do teste qui-quadrado, teste exato de Fisher ou prova binomial para as variáveis categóricas de adequação dos componentes dietéticos com DA e seus agravos. Participaram do estudo 75 adolescentes (25 tenistas, 50 não atletas) apresentando desenvolvimento puberal similar. Atletas obtiveram melhor perfil da composição corporal quanto ao tecido adiposo. Quanto à ingestão de macronutrientes, os carboidratos merecem destaque. Em ambos os grupos, a maioria das participantes apresentaram baixa ingestão de carboidratos, sendo este percentual de inadequação significativamente maior para as atletas. Os micronutrientes que obtiveram maior percentual de inadequação foram folato e cálcio em ambos os grupos. Verificou-se que 92%, 32% e 24% das atletas e 72%, 8% e 30% das não atletas preencheram critérios para DA e/ou BDE, IM e baixa massa óssea, respectivamente. Apesar de adolescentes atletas tenistas e não atletas apresentarem prevalência de DA similares, as não atletas apresentaram maior insatisfação com a imagem corporal pelo teste BSQ. No entanto, as atletas parecem estar em situação mais grave uma vez que apresentaram maior prevalência de BDE e de IM. A DMO e a prevalência de TMA foram similares entre os grupos. Foi verificada associação inversa e significativa entre alguns componentes dietéticos (principalmente energia e carboidratos) e os escores do teste BSQ. Foi possível concluir que a baixa ingestão de alguns componentes dietéticos, principalmente energia e carboidratos, podem funcionar como marcadores para desordens alimentares em ambos os grupos a fim de previnir posteriores consequências à saúde / Adolescents have a rapid growth and and intense body changes that make them vulnerable in nutritional terms. The practice of dietary restrictions, quite common among adolescents, can lead to nutritional inadequacies that appear to be the first signal for the start of disordered eating (DE). The female sports participation and the number of DE cases in adolescent athletes from sports that require bodys exposure, agility and soft movements, like tennis, have increased in recent years. DE can lead to serious health complications such as menstrual irregularities (MI) and low bone mineral density (BMD), constituting the female athlete Triad (FAT). Thus, it is believed that certain dietary components may be associated with DE and its complications. The aim of this study was to evaluate the association of dietary components with disordered eating, menstrual irregularities and body composition in female adolescent tennis players and controls. This was a cross-sectional study. We carried out assessments of pubertal development by Tanner stage self-assessments; body composition by dual energy x-ray absorptiometry (DXA); dietary parameters by three-day food records; DE by the application of three validated questionnaires (Eating Attitudes Test - EAT-26, Bulimic Investigatory Test, Edinburgh- BITE and the Body Shape Questionnaire - BSQ), menstrual status through a validated questionnaire and BMD also by DXA. The Female athlete Triad (FAT) was established by the concomitant presence of DE and/or low energy availability (LEA), MI and low BMD. Associations were performed using Spearman`s correlations between numerical variables of dietary components with DE and body composition. Also associations were performed using chi-square test, Fisher's exact test or binomial test for categorical variables of dietary components adequacy with DE and its complications. The study enrolled 75 adolescents (25 female tennis players, 50 controls) presenting with similar pubertal development. Athletes had better body composition profile, regarding the adipose tissue. As for the intake of macronutrients, carbohydrates are noteworthy. In both groups, most participants had low intake of carbohydrates, being this frequency of inadequacy significantly higher for athletes. Micronutrients with the greatest percentage of inadequacy were folic acid and calcium in both groups. It was found that 92%, 32% and 24% of the athletes and 72%, 8% and 30% of controls met the criteria for DE and / or LEA, MI, low bone mass, respectively. Although adolescent tennis players and controls present with similar prevalence of DA, the controls showed greater dissatisfaction with body image by BSQ test. However, the athletes seem to be in a more serious situation since they had a higher prevalence of LEA and MI. BMD and the prevalence of FAT were similar between groups. Significant inverse association was found between some dietary components (mainly energy and carbohydrates) and scores of BSQ test. It was concluded that low dietary intakes of some dietary components, mainly energy and carbohydrates, may function as markers for disordered eating in both groups in order to prevent further health consequences