Breakfast consumption and physical activity in British adolescents.

Studies show an inverse relationship between breakfast frequency and weight gain. This may reflect poor eating habits generally and associated low physical activity (PA) or direct impacts of breakfast on mechanisms leading to lethargy and reduced PA. The relationship between breakfast frequency and PA is inconclusive. We aimed to determine whether breakfast frequency is associated with PA levels in British adolescents independent of body composition and socio-economic status (SES). Habitual breakfast frequency (self-report questionnaire) was assessed in 877 adolescents (43% male, age 14·5 (SD 0·5) years old). PA was measured over 5 d (accelerometry, average counts/ min; cpm). Associations between daily PA and breakfast frequency were assessed using linear regression adjusted for body fat percentage and SES. Effect modification by sex and associations with PA during the morning (06.00-12.00 hours) were explored. For boys, there were no significant associations between breakfast frequency and PA. For girls, less frequent breakfast consumption was significantly associated with lower PA (cpm) during the morning (occasional v. frequent b - 6·1 (95% CI - 11·1, -1·1), P = 0·017) when adjusted for body fat percentage and SES. There were no associations between PA and breakfast consumption over the whole day; however, for girls, less frequent breakfast consumption may be associated with lower PA levels during the morning, suggesting that breakfast consumption should perhaps be taken into consideration when aiming to promote PA in adolescent girls.

Factors affecting bacterial counts during preparation of the hands for aseptic surgery.

This study was designed to compare the efficacy of four hand preparation techniques in removing bacteria from the hands preoperatively. The effect of bacteriological swabbing itself on bacterial counts was also investigated. The numbers of bacteria obtained from the dominant and non-dominant hands were also determined. The techniques all used 4 per cent chlorhexidine gluconate, and consisted of rubbing for five minutes with one application of antiseptic; rubbing for five minutes with five applications of antiseptic; rubbing for one minute with one application of antiseptic; and scrubbing with a brush for five minutes with one application of antiseptic. The results showed that the four techniques were equally effective at removing bacteria. There was no significant difference in the bacterial counts obtained from the dominant and non-dominant hands. The wearing of gloves for up to 30 minutes after scrubbing had no effect on the bacterial counts. Swabbing itself significantly reduced the number of bacteria cultured from the hands.

Changes in consumption of added sugars from age 13 to 30 years: a systematic review and meta-analysis of longitudinal studies.

Added sugar intake during adolescence has been associated with weight gain and cardiometabolic risk factors. Moreover, dietary habits may persist into adulthood, increasing chronic disease risk in later life. This systematic review investigated changes in intake of added sugars between the ages of 13 and 30 years. Literature databases were searched for longitudinal studies of diet during adolescence or early adulthood. Retrieved articles were screened for studies including multiple measures of intake of sugars or sugary foods from cohort participants between the ages of 13 and 30. Data were analysed using random-effects meta-analysis, by the three main nutrient and food group categories identified (PROSPERO: CRD42015030126). Twenty-four papers reported longitudinal data on intake of added sugar or sucrose (n = 6), sugar-sweetened beverages (SSBs) (n = 20) and/or confectionery (n = 9). Meta-analysis showed a non-significant per year of age decrease in added sugar or sucrose intake (-0.15% total energy intake (95%CI -0.41; 0.12)), a decrease in confectionery consumption (-0.20 servings/week (95%CI -0.41; -0.001)) and a non-significant decrease in SSB consumption (-0.15 servings/week (95%CI -0.32; 0.02)). Taken together, the overall decrease in added sugar intake observed from adolescence to early adulthood may suggest opportunities for intervention to further improve dietary choices within this age range.

The school environment and adolescent physical activity and sedentary behaviour: a mixed-studies systematic review.

There is increasing academic and policy interest in interventions aiming to promote young people's health by ensuring that the school environment supports healthy behaviours. The purpose of this review was to summarize the current evidence on school-based policy, physical and social-environmental influences on adolescent physical activity and sedentary behaviour. Electronic databases were searched to identify studies that (1) involved healthy adolescents (11-18 years old), (2) investigated school-environmental influences and (3) reported a physical activity and/or sedentary behaviour outcome or theme. Findings were synthesized using a non-quantitative synthesis and thematic analysis. Ninety-three papers of mixed methodological quality were included. A range of school-based policy (e.g. break time length), physical (e.g. facilities) and social-environmental (e.g. teacher behaviours) factors were associated with adolescent physical activity, with limited research on sedentary behaviour. The mixed-studies synthesis revealed the importance of specific activity settings (type and location) and intramural sport opportunities for all students. Important physical education-related factors were a mastery-oriented motivational climate and autonomy supportive teaching behaviours. Qualitative evidence highlighted the influence of the wider school climate and shed light on complexities of the associations observed in the quantitative literature. This review identifies future research needs and discusses potential intervention approaches to be considered.

Objectively measured physical activity and longitudinal changes in adolescent body fatness: an observational cohort study.

BACKGROUND: The data regarding prospective associations between physical activity (PA) and adiposity in youth are inconsistent. OBJECTIVE: The objective of this study was to investigate associations between baseline levels of objectively measured PA and changes in adiposity over 2.5 years from mid-to-late adolescence. METHODS: This was an observational cohort study in 728 school students (43% boys) from Cambridgeshire, United Kingdom. Fat mass index (FMI, kg m(-2) ) was estimated at baseline (mean ± standard deviation age: 15 ± 0.3 years) and follow-up (17.5 ± 0.3 years) by anthropometry and bioelectrical impedance. Habitual PA was assessed at baseline by ≥3 d combined heart rate and movement sensing. Average daily PA energy expenditure (PAEE) and the time (min d(-1) ) spent in light, moderate and vigorous intensity PA (LPA, MPA and VPA, respectively) was estimated. Multilevel models were used to investigate associations between baseline PA and change in FMI (ΔFMI). Adjustment for baseline age, sex, follow-up duration, area-level socioeconomic status, season of PA assessment, sedentary time, energy intake and sleep duration was made; baseline FMI was also added in a second model. RESULTS: FMI increased significantly over follow-up (0.6 ± 1.2 kg m(-2) , P < 0.001). Baseline PAEE and LPA positively predicted ΔFMI in overfat participants (P ≤ 0.030), as did VPA in initially normal fat participants (P ≤ 0.044). There were further positive associations between PAEE and ΔFMI in normal fat participants, and between MPA and ΔFMI in both fat groups, when adjusted for baseline FMI (P ≤ 0.024). CONCLUSIONS: Baseline PAEE and its subcomponents were positively associated with small and unlikely clinically relevant increases in ΔFMI. These counter-intuitive findings may be explained by behavioural changes during the course of study follow-up.

A longitudinal study of the distance that young people walk to school.

Walking or cycling to school has been associated with important health benefits. Distance between home and school is the main correlate of active commuting to school, but how far children walk to school and how this changes as children age is unknown. Mode of commuting and objectively-assessed distance to school were measured at 3 time points: aged 9/10 years, 10/11 years and 13/14 years. Data were analysed using ROC-curve analyses. With age, children walked further to school; the threshold distance that best discriminated walkers from passive commuters was 1421 m in 10-year-olds, 1627 m in 11-year-olds and 3046 m in 14-year-olds. Future interventions should consider the distance that young people actually walk.

Managed care: employers' influence on the health care system.

Health care reform is a complex issue involving many key sectors including providers, consumers, insurers, employers, and the government. System changes must involve all sectors for reform to be effective. Each sector has a responsibility to understand not only its own role in the health care system, but the roles of others as well. The role of business employers is often not apparent to health care providers, especially nurses. Understanding the influence employers have on the health care system is vital if providers want to be proactive change agents ensuring quality care.

Childhood obesity prevention and control in city recreation centres and family homes: the MOVE/me Muevo Project.

BACKGROUND: Interventions to prevent and control childhood obesity have shown mixed results in terms of short- and long-term changes. OBJECTIVES: 'MOVE/me Muevo' was a 2-year family- and recreation centre-based randomized controlled trial to promote healthy eating and physical activity among 5- to 8-year-old children. It was hypothesized that children in the intervention group would demonstrate lower post-intervention body mass index (BMI) values and improved obesity-related behaviours compared with the control group children. METHODS: Thirty recreation centres in San Diego County, California, were randomized to an intervention or control condition. Five hundred forty-one families were enrolled and children's BMI, diet, physical activity and other health indicators were tracked from baseline to 2 years post-baseline. Analyses followed an intent-to-treat approach using mixed-effects models. RESULTS: No significant intervention effects were observed for the primary outcomes of child's or parent's BMI and child's waist circumference. Moderator analyses, however, showed that girls (but not boys) in the intervention condition reduced their BMI. At the 2-year follow-up, intervention condition parents reported that their children were consuming fewer high-fat foods and sugary beverages. CONCLUSIONS: Favourable implementation fidelity and high retention rates support the feasibility of this intervention in a large metropolitan area; however, interventions of greater intensity may be needed to achieve effects on child's BMI. Also, further research is needed to develop gender-specific intervention strategies so that both genders may benefit from such efforts.

Managed care and total quality management: a necessary integration.

The process of quality improvement/total quality management (QI/TQM) plays a key role in the delivery of health care in a managed care system. The concepts and ideas surrounding QI/TQM and managed care are interrelated, and the success of health care delivery depends on the integration and coexistence of these two philosophies. In looking more closely at these concepts, it becomes clear that the principles of QI/TQM must underlie strategic decisions involved in the implementation of a managed care system. Nurses play a key role in the success of this integration as nurse case managers, nurse practitioners, and nurse administrators. They have a direct impact on the many variables and goals of both QI/TQM and managed care.

The changing health care delivery structure: opportunities for nursing practice and administration.

The increase in national health care expenditures has placed great stress on the economy and has contributed to a widespread consensus that reform of the health care delivery system is necessary. Three interrelated strategies are frequently used to cope with the turbulent environment in the health care industry today: managed care, hospital merger and acquisition to form integrated health care delivery systems, and redefined roles for nurses and other health care workers. These strategies have profound implications and will offer great opportunities for nursing administrators to foster nursing practice in new and improved systems of care delivery.