A conative educational model for an intervention program in obese youth

Background Obesity in children has increased in recent years throughout the world and is associated with adverse health consequences. Early interventions, including appropriate pedagogy strategies, are important for a successful intervention program. The aim of this study was to assess changes in body mass index, the ability to perform sport activities, behavior in the classroom and academic performance following one year of a health-wellness intervention program in obese youth. Methods The CEMHaVi program included 37 obese children (19 girls and 18 boys). Participants received an intervention program consisting of physical activity and health education. Assessment included body mass index, academic performance, classroom performance and ability to perform sport activities. Paired t tests were used to assess the effects of intervention, and chi square was used to assess inter-action between measures. Results Findings of the study suggest significant decrease in Z scores of Body Mass Index and an improvement of academic performance, classroom behavior and the ability to perform sport activities (p \u3c 0.05). Chi square testing showed significant positive inter-actions between body mass index, classroom behavior and academic performance. Conclusions Results following year one of CEMHaVi showed that a program of physical activity and health education had positive effects on obesity, behavior in the classroom and the ability to perform sport activities in obese adolescents. Significant inter-action in changes between variables was observed. Findings are important for designing intervention models to improve health in obese youth

Comparison of two ActiGraph accelerometer generations in the assessment of physical activity in free living conditions.

International audienceUNLABELLED: ABSTRACT: BACKGROUND: The aim of this study was to compare physical activity measured using GT1M ActiGraph and GT3X ActiGraph accelerometers in free living conditions. FINDINGS: Twenty-five adults wore GT1M and GT3X Actigraph accelerometers simultaneously during a typical weekday of activity. Data were uploaded from the monitor to a computer at the end of test (one day). Previously established thresholds were used for defining time spent at each level of physical activity, physical activity was assessed at varying intensities comparing data from the two accelerometers by ANOVA and Bland and Altman statistical analysis. The concordance correlation coefficient between accelerometers at each intensity level was 0.99. There were no significant differences between accelerometers at any of the activity levels. Differences between data obtained in minutes with the GT1M accelerometer and the GT3X monitor were to 0.56, 0.36, 0.52 and 0.44% for sedentary, light, moderate and vigorous, respectively. The Bland and Altman method showed good agreement between data obtained for the two accelerometers. CONCLUSIONS: Findings suggest that the two accelerometers provided similar results and therefore the GT3X may be used in clinical and epidemiological studies without additional calibration or validation studies

Validation of the Vivago Wrist-Worn accelerometer in the assessment of physical activity

BACKGROUND: Most accelerometers are worn around the waist (hip or lower back) to assess habitual physical activity. Wrist-worn accelerometers may be an alternative to the waist-worn monitors and may improve compliance in studies with prolonged wear. The aim of this study was to validate the Vivago® Wrist-Worn Accelerometer at various intensities of physical activity (PA) in adults. METHODS: Twenty-one healthy adults aged 20–34 years were recruited for the study. Accelerometer data and oxygen uptake (VO(2)) were measured at sedentary, light, moderate and vigorous levels of PA. RESULTS: Activity categories and accelerometer counts were: sedentary, 0–15 counts·min(−1); light, 16–40 counts·min(−1); moderate, 41–85 counts·min(−1); and vigorous activity, >; 85 counts·min(−1). ANOVA repeated measures was used to determine the relationship between accelerometry data output and oxygen consumption (r = .89; p <; .001). The Bland and Altman method showed good agreement in the assessment of energy expenditure between the indirect calorimetry and the data obtained by the accelerometer. CONCLUSIONS: Results of the study suggest that the Vivago® wrist-worn accelerometer is a valid measure of PA at varying levels of intensity. The study has also defined threshold values at 4 intensities and hence te Vivago® accelerometer may be used to quantify PA in free living conditions among adults. This device has possible application in treating a variety of important health concerns

Further characterization of a streptococcal nephritogenic agent.

Additional studies were undertaken on the nature of a nephritogenic agent found in the culture filtrates of certain group A streptococci. A commercially available dehydrated medium proved satisfactory for the production of the active material. Gel filtration was used to divide crude extracts, prepared from the diffusible portion of culture filtrates, into two major fractions. One of these, representing the higher molecular weight components, contained most of the nephritogenic activity as evidenced by the development of hypertension and acute glomerulonephritis in rabbits injected with the fraction. Physical and chemicals studies indicated that the active fraction consisted of at least four peptide components separable by high-voltage electrophoresis on paper. Automatic amino acid analysis of an acid hydrolysate of this fraction revealed 17 different amino acids. Carbohydrate was not detected by anthrone and orcinol tests. No relationship between this streptococcal nephritogenic agent and other streptococcal constituents which have been implicated in nephritis was established

The Effects of Soccer Training and Detraining Upon Selected Cardiac and Metabolic Measures

152 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1967.U of I OnlyRestricted to the U of I community idenfinitely during batch ingest of legacy ETD

Reliability of health-related physical fitness tests in adolescents: the MOVE Program

International audienceThe aim was to examine the reliability of health‐related physical fitness tests that were used in a French health promotion program ‘Move…A priority for your health’. Participants were 174 French youth (88 children and 86 adolescents) aged 8·2–16·2 years. Aerobic fitness, muscular strength, speed and flexibility were tested using 20‐m shuttle run test, ½ mile run test, basketball throw, standing long jump, shoulder stretch and 20/30/50‐m sprint tests. Reliability was calculated for the basketball throw, standing long jump, shoulder stretch and sprint tests. The tests were performed two times, 1 week apart on the same day of the week. Reliability was examined with intraclass correlation coefficients (ICCs) and Bland–Altman analysis. With the exception of the ½ mile run test, which resulted in moderate agreement (0·66), all tests had high reliability. ICCs were 0·97, 0·93, 0·91 and 0·93 for the sprint test, basketball throw, shoulder stretch and the standing long jump, respectively. The differences obtained between the first and the second trial were non‐significant. Results from this study indicate that the BOUGE health‐related physical fitness battery, administrated by physical education teachers, was reliable for measuring health‐related components of fitness in children and adolescents in a school setting

Relationship between Tactics and Energy Expenditure According to Level of Experience in Badminton

Research on racket sports has traditionally focused on expert players and has treated energy expenditure and tactics as independent factors. These prior studies could not assess how energy expenditure and tactics changed as a function of experience and skill. Here, the specific relationship between playing tactics and energy expenditure in badminton were assessed. Participants were classified into five stages of badminton experience on the basis of conative criteria: structural (physical abilities), technical (technical skills), and functional (tactics). The physical activity of 99 players (47 beginners, 15 intermediates, 30 advanced, and 7 experts) was measured using a three-axis accelerometer during a badminton set (21 points, no extra scoring). The results showed that physical activity (counts/sec.) ranged between about 115 (Stage 1) and 155 (Stage 5), and differed significantly across the conative stages. For Stages 2 and 4, defined by an increase in use of tactics, physical activity increased substantially. For Stage 3, defined by a decrease in use of tactics, physical activity decreased significantly. Thus, tactically-oriented play appears to be closely related to physical activity

Physical activity using wrist-worn accelerometers: comparison of dominant and non-dominant wrist

International audienceThe purpose of this study was to determine whether there is a difference in physical activity assessment between a wrist‐worn accelerometer at the dominant or non‐dominant arm. The secondary purpose was to assess the concurrent validity of measures of physical activity from the wrist‐worn accelerometer and the waist‐worn accelerometer. Forty adults wore three accelerometers simultaneously, one on the waist and one each on the non‐dominant wrist and dominant wrist, respectively, for 24 consecutive hours of free‐living conditions. Data were uploaded from the monitor to a computer following a 1‐day test period. There were no significant differences in physical activity when comparing the dominant versus the non‐dominant wrist, regardless of axis (P>0·05). Mean daily accelerometer output data from both wrists were strongly correlated with average counts per minute from the ActiGraph worn around the waist (r = 0·88, P<0·001). Findings suggest that the choice to wear the accelerometer on the non‐dominant or dominant wrist has no impact on results. Data from this study contribute to the knowledge of how to best assess physical activity habits