RESUMEN
STUDY OBJECTIVE: To provide initial insight into physical activity patterns and predictors of moderate to vigorous physical activity (MVPA) in youth with polycystic ovary syndrome (PCOS) by using a multisensor activity monitor. DESIGN: Cross-sectional study analyzing baseline MVPA data using real-time continuous monitoring of physical activity. Body mass index (BMI) and depressive symptoms were examined as predictors of MVPA. SETTING: A large, urban children's hospital in the United States. PARTICIPANTS: Thirty-five youth (aged 12 to 21 years) previously diagnosed with PCOS (mean BMI = 38.0 kg/m(2); mean age = 15.4 years, 79% white) who were participants in a behavioral lifestyle intervention. MAIN OUTCOME MEASURES: Total steps, total MVPA, longest continuous bout of MVPA, and frequency of MVPA bouts lasting for 5 to 9 minutes and 10 or more minutes. RESULTS: Sixty percent of youth averaged at least 1 daily MVPA bout lasting 10 or more minutes, and 14% averaged a daily MVPA bout lasting 30 or more minutes. BMI was negatively correlated with MVPA bout duration (P = .04). Parental ratings of depression, but not self-report ratings, were predictive of participants' total MVPA (ß = -.46; P = .01), number of 5- to 9-minute bouts (ß = -.39; P = .03), and bouts of 10 or more minutes (ß = -.35; P = .05). CONCLUSION: Youth with PCOS may benefit from being prescribed multiple bouts of MVPA lasting less than 30 continuous minutes to meet national recommendations and achieve health benefits. BMI and parental endorsement of child's depression symptoms may be important to consider when assessing and prescribing MVPA to youth with PCOS.
Asunto(s)
Trastorno Depresivo/etiología , Monitoreo Ambulatorio/métodos , Actividad Motora/fisiología , Síndrome del Ovario Poliquístico/fisiopatología , Adolescente , Afecto , Índice de Masa Corporal , Niño , Estudios Transversales , Trastorno Depresivo/epidemiología , Femenino , Humanos , Síndrome del Ovario Poliquístico/psicología , Autoinforme , Estados Unidos , Adulto JovenRESUMEN
It is unclear how exercise influences affect in overweight and obese individuals. OBJECTIVES: To examine the effect of a single exercise session on positive and negative affect and examine whether pre- to post-exercise changes in affect influence subsequent energy intake (EI). METHODS: Nineteen sedentary, overweight/obese women walked for ~40 minutes at a moderate-intensity on one day and rested for a similar duration on a separate day. Positive (PA) and negative affect (NA) were assessed pre-testing, post-testing, 60, and 120 minutes post-testing using the Positive and Negative Affect Schedule. Energy intake was determined by measuring food intake before and after a buffet meal 1-2 hours post-exercise/rest. RESULTS: For PA, the time x condition interaction was significant (p<0.05). There was a trend for those subjects with improved PA from pre to post-exercise (58%) to consume fewer calories post-exercise (524 ± 260.9 kcal) compared to post-rest (566.1 ± 303.0 kcal), while those who had a worsening or no change in PA (42%) had a higher EI following exercise (588.0 ± 233.7 kcal) compared to rest (524.6 ± 281.7 kcal; p=0.08). NA was not significantly altered by exercise. CONCLUSIONS: Some overweight/obese individuals appear to experience an increase in positive affect with exercise; however, there is a high degree of individual variability in responses that warrants further examination. This study also provides initial evidence that a worsening in affect following exercise may unfavorably impact eating behaviors. These preliminary findings have the potential to enhance our understanding of factors mediating the relationship between exercise and EI.
RESUMEN
Women with a limited family history of breast cancer may be interested in cancer genetics information although their objective risk of breast cancer may not indicate routine referral to cancer genetics services. This study examined factors related to interest and use of cancer genetics services in a community sample of women with a limited family history of breast cancer (N = 187) who had no previous contact with cancer genetics services. Participants provided demographic information and ratings of perceived risk, cancer distress, attitudes, and intentions to initiate cancer genetics services. Participants were given information about a cancer genetics clinic that served women having concerns about their breast cancer risk. Women were contacted within 6 weeks and 8 months following their study appointment. Six weeks following their study appointment, 25% of women had initiated cancer genetics services. Eight months following their study appointment, 18% of women reported having completed a cancer genetics service appointment. Baseline intentions independently predicted both initiation at 6 weeks and appointment at 8 months. Cancer distress was positively associated with cancer genetics service initiation and appointment. Results suggest that some women with a limited family history of breast cancer are interested in seeking out cancer genetics information. Women with a limited family history of breast cancer may benefit from the availability of cancer genetics information provided through primary healthcare settings.