Day Of Vigorous Physical Activity Research Articles

Abstract TP29: Neurodegenerative Plasma Biomarker Associations With Cognitive Resilience in Adults With High White Matter Hyperintensity Volume: A Post-Hoc Analysis of Systolic Blood Pressure Intervention Trial Memory & Cognition in Decreased Hypertension (SPRINT MIND)

Introduction: Although high cerebral white matter hyperintensity volume (WMHv) is associated with cognitive decline, many adults with high WMHv show no cognitive deficits. Neurodegenerative plasma biomarkers may be associated with cognitive decline via vascular processes causing higher WMHv such as cerebral amyloid angiopathy & inflammatory small vessel disease. We determined associations of plasma amyloid β 42 (AB42), amyloid β 40 (AB40), AB42/AB40, total tau, & neurofilament light chain (NfL) with cognitive resilience (CR) in adults with high WMHv using baseline MRIs & measurements from SPRINT MIND. Methods: This study included baseline data from 186 SPRINT MIND participants who were in the highest WMHv tertile & had available plasma biomarker concentrations & Montreal Cognitive Assessment (MoCA) scores. We defined CR two ways: A) MoCA score >25 or B) MoCA score >22. We determined univariate & adjusted odds ratios (OR) & 90% confidence intervals (CI) for each aforementioned plasma biomarker with CR. Confounders in adjusted models were: age, sex, race-ethnicity (Non-Hispanic white, Non-Hispanic Black, Hispanic, or other) education (no college education, college education, or post-graduate education), smoking history (never smoker, prior smoker, or current smoker) physical activity (0, 1-4, or ≥ 5 days of vigorous physical activity), diabetes, having insurance, & average systolic blood pressure. Residual confounding and effect modification by WMHv were tested in sensitivity analyses. Results: In our sample, the mean age was 72.6 years, 45.7% were female & 66% were Non-Hispanic white. The median WMHv was 10.0 cm 3 (25%-75% range: 6.3 - 16.9 cm 3 ). . CR defined as MoCA scores > 25 & >22 was present in 28.5% & 56.5% of participants respectively. Lower plasma AB40 was marginally associated with CR using a MoCa cutoff of >25 (OR 1.003, 90% CI: 1.001-1.006) in univariate analyses. There were no other significant (P>0.1) univariate or adjusted associations between plasma biomarkers with CR using either MoCa cutoff, nor significant confounding or effect modification by WMHv (P> 0.1). Conclusion: There were no significant adjusted associations between any plasma biomarker with CR. Future work should identify factors associated with CR in adults with high WMHv.

Sexual behavior and cardiovascular diseases: univariable and multivariable Mendelian randomization.

To assess the relationship of genetically predicted sexual behavior (age at first sex (AFS) and the number of sexual partners (NSP)) on cardiovascular diseases (CVDs). We performed two-sample Mendelian randomization (MR) with publicly available datasets from the UK Biobank and FinnGen Study, and analyzed genome-wide association results for sexual behaviors and twelve types of CVDs. The univariable MR method provided a total effect of AFS and NSP on CVDs, and showed evidence that early AFS rather than NSP was associated with CVDs, including angina pectoris (AP), atrial fibrillation and flutter (AFF), coronary atherosclerosis (CAS), deep vein thrombosis of the lower extremity (DVT-LE), heart failure (HF), hypertension (HTN), ischaemic stroke (IS), and myocardial infarction (MI). Given sex as a social determinant of CVD risk, we used gender-stratified SNPs to investigate gender differences in the development of CVDs. These results showed a stronger causal relationship of AFS on CVDs in females than in males. Further multivariable MR analyses indicated a direct effect after accounting for insomnia, number of days of vigorous physical activity 10 + minutes (VPA 10 + min), and time spent watching television (TV). Two-step MR demonstrated these three risk factors act as a mediator in AFS associated AP/HTN/HF. We provide evidence that early AFS increased the risk of CVDs. These associations may be partly caused by VPA 10 + min, insomnia, and the time spent on TV. The causality of AFS on CVDs in females was stronger than in males. Conversely, genetically predicted NSP was not associated with CVDs.

Increased psychological distress among young people before and during the fifth wave of COVID-19 after two years of pandemic in Hong Kong: a 6-month longitudinal study

BackgroundDespite over two years of COVID-19 worldwide, the outbreak of the Omicron variant has given rise to an unprecedented surge of infection with diverse lockdown measures implemented globally. Whether the emergence of a new wave of COVID-19 could further affect mental health in the population after nearly two years of the pandemic remains to be addressed. Furthermore, whether changes in smartphone overuse behaviours and physical activity – both of which are particularly relevant to young people – would together contribute to changes in distress symptoms during this wave of COVID-19 was also examined.MethodsA total of 248 young people from an ongoing household-based epidemiological study in Hong Kong who completed their baseline assessments prior to the Omicron variant outbreak, i.e., fifth wave of COVID-19 (July–November 2021), were invited for a 6-month follow-up study during this wave of infection (January–April 2022) (mean age = 19.7 years, SD = 2.7; 58.9% females). At both time points, levels of global distress symptoms, perceived stress, smartphone overuse, frequency of engagement in vigorous physical activity, and other potential risk and protective factors were assessed.ResultsThe proportion of young people presenting moderate-to-severe distress (6-item Kessler Psychological Distress Scale ≥ 5) significantly increased from 45.6 to 54.4% during the fifth wave of COVID-19 (p < 0.010). Significantly increased levels of smartphone overuse and reduced days of vigorous physical activity were also observed during the fifth wave. Notably, increased smartphone overuse and reduced physical activity both additively and interactively contributed to elevated distress at 6 months, even after accounting for demographic characteristics, psychiatric history, childhood adversity, as well as baseline distress symptoms, resilience, and recent personal stressors.ConclusionsThe findings suggest that the emergence of a new wave of COVID-19, specifically the Omicron outbreak, can further aggravate mental distress even after a protracted period of the pandemic. Awareness of the dynamic nature of COVID-19 is necessitated to address the pressing mental health needs of populations. Supporting young people in healthier patterns of smartphone use and physical activity can be helpful.

Accelerometry-based assessment of physical activity and sedentary behavior in adult survivors of childhood acute lymphoblastic leukemia and their healthy peers

Adult survivors of childhood acute lymphoblastic leukemia (ASALL) compose a specific group that faces an increased risk of experiencing late effects of their earlier treatment. Physical activity (PA) may be one of the appropriate means for preventing or minimizing the late effects of treatment. The main purpose of this study is to characterize device-measured PA and sedentary behavior (SB) among ASALL. The specific objective was to compare the movement behavior with a group recruited from the healthy population and to determine the degree of compliance with health recommendations for PA in the adult population. Twenty ASALL and 21 healthy control group (CG) members participated in the study. Participants were between 18 and 30 years old. Movement behavior was assessed for seven days using an Axivity AX3 accelerometer and a 24-h wearing protocol. Movement behavior was characterized by the amount of time spent in SB, light PA (LPA), moderate PA (MPA), and vigorous PA (VPA). There were no significant differences in movement behavior or compliance with PA recommendations between the ASALL and CG. During the week, the ASALL accumulated 711 min per day of SB vs. 636 min per day in the CG (p = 0.26); the ASALL had 186 min per day of LPA vs. 201 min per day in the CG (p = 0.47); the ASALL had 132 min per day of MPA vs. 147 min per day in the CG (p = 0.25); and the ASALL had 5 min per day of VPA vs. 4 min per day in the CG (p = 0.48). All research participants (ASALL and CG) met the PA recommendations of > 150 min per week for moderate PA. The results of our study suggest that ASALL, even after suffering from that disease in childhood, display comparable levels of PA and SB to their healthy peers. Both groups met the health recommendations for PA. The device-based monitoring of PA and SB should be an integral part of monitoring the late effects of treatment.

국내 소아청소년 암 완치 청소년의 신체활동 및 체육 참여 분석 : 성향점수매칭(PSM)을 이용하여

This study aims to compare the characteristics, participation in physical activity, and physical education of adolescents with childhood cancer and the control group whose gender and age were matched with the raw data of the online adolescent health behavior survey. Eighty-eight adolescents with childhood cancer (53 males and 35 females, mean age 15.2±2.1 yrs) who attended middle school and high school were recruited for the study after treatment for pediatric cancer. In addition, 440 adolescents(265 males and 175 females, mean age 15.2±2.1 yrs) in the comparison group from the online adolescent health behavior survey matched gender and age in a 1:5 ratio using the propensity score matching methods. As a result, adolescents with childhood cancer showed lower height(p.001) and weight(p.001) than adolescents in the control group. In addition, they were found to be statistically significantly lower in the number of days of vigorous physical activity(p=.001), the number of days of walking for more than 10 minutes(p.001), the number of times directly exercised during physical education(p=.003), and the number of sports teams(p=.036). This study intends to provide physical activity guidelines for adolescents

0011 Work Hard, Sleep Hard: Vigorous Workdays and Sleep Difficulties

Abstract Introduction It is common in America to work 5 or 6 days as a full work week. This is exhausting, especially for those with a vocation that requires vigorous physical activity during the work day. Sleep is an important factor when assessing workplace efficiency, as those able to obtain regular healthy sleep will perform better. Methods A multinomial logistical regression analysis was conducted on the 2017 - March 2020 data collected from the National Health and Nutrition Examination Survey (NHANES) to explore a relationship between those with self-assessed sleep difficulties and the number of days of vigorous physical activity during work. The specific question used for analysis was, “Does your work involve vigorous-intensity activity that causes large increases in breathing or heart rate like carrying or lifting heavy loads, digging or construction work for at least 10 minutes continuously?” If yes, the number of days during a typical week was recorded. Sleep difficulties were self-reported as difficulties “falling asleep, staying asleep, or sleeping too much” within the previous two weeks, categorized as “never,” “less than half the days,” “more than half the days,” and “nearly every day.” Reported results were unweighted; weighted results are forthcoming. Results were adjusted for sex, age, race/ethnicity, education level, and relationship status. Results Compared to those with no days of vigorous physical activity at work, those with 2 days were more likely to report having sleep difficulties several days in the past 2 weeks (OR: 1.13, [1.00,1.73], p=0.049). those reporting 6 days per week of vigorous work-related activity were less likely to report sleep difficulties several days (OR: 0.73, [0.59,0.91], p=0.004), more than half the days (OR: 0.67, [0.48,0.93], p=0.016), or nearly every day (OR: 0.68, [0.50,0.94], p=0.018). Those who reported 6 days per week of vigorous work-related activity were less likely to report sleep difficulties several days (OR: 0.75, [0.51,0.98], p=0.038) or more than half the days (OR: 0.57, [0.34,0.96], p=0.035). Conclusion It is possible that a physically demanding job has protective effects on sleep quality when compared to those that did not have any vigorous physical activity related to their profession. Support (If Any)

Differences in Self-Rated Health and Physical Activity Due to Education Level among Koreans: Understanding Implications of Physical Education.

Background:We aimed to explore the effect of education levels on self-rated health and physical activity (PA) and to provide basic data for developing interventions based on physical education to improve the quality of life among Koreans.Methods:The 2019 Community Health Survey data were selected through primary and secondary phylogenetic extraction. The survey was conducted among Korean adults aged ≥19 years (n=229,099), in 2019, using an electronic questionnaire. The education levels were classified into eight groups: uneducated, Seodang/Hanhak (traditional Korean school), elementary school, middle school, high school, college (2 or 3 years), university (4 years), and post-graduate or higher. In this study, the effect of participants’ education levels on self-rated health levels and PA was investigated (the PA subdimensions were: the number of days of vigorous PA, moderate-intensity PA, walking, and flexibility exercises).Results:1) Regarding self-rated health, significant differences according to education level were recorded (P<0.001), with higher education levels leading to higher averages. 2) Regarding PA, significant differences according to education level were revealed, and the number of days of vigorous PA, walking, and flexibility exercise (P<0.001) increased with higher education levels. Moreover, the university (4 years) group reported the highest average. However, the middle school group reported the highest average for the number of days of moderate-intensity PA (P<0.001), and the average number of days decreased as the education level increased after middle school.Conclusion:Education plays an important role in maintaining health, and practicing appropriate PA contributes to one’s quality of life.

Modeling the musculoskeletal loading in bone remodeling at the hip of a child

Background and objectivesThe mechanical load associated with physical activity affects the bone adaptation process. The bone adaptationeffect varies with age, being more effective during childhood and adolescence, particularly during pre-pubertal years. Bone-strengthening physical activity is recommended for children and adolescents. The number of time periods (bouts) per day of vigorous physical activity seems to be more important than the total cumulative time for optimal bone strength. So, the aim of this study was to evaluate the effects of weight-bearing physical activity on bone mineral density (BMD) of the proximal femur through computational simulation considering the intensity, exposure time (bouts) and regionalization of the results. MethodsFor this purpose, a finite element model of a 7 year-old child femur was developed based on computed tomography images. Musculoskeletal loads were obtained from experimental kinematic data of weight-bearing physical activity performed by children of the same age (standing, walking, running, jumping). The effects of physical activity on BMD of several regions of interest of the femur were analyzed using a bone remodeling model. A daily accumulation of 400 min of physical activity (200 min walking and 200 min standing) was considered as reference, against with which the effects of additional 10 min loading bouts were compared: 10 min bouts of vigorous intensity physical activity vs. 10 min bouts of light to moderate intensity physical activity. ResultsThe simulations revealed greater increases in BMD associated with higher intensity and longer duration of physical activity. The largest BMD increases occurs during the first 10 min bout compared to longer durations and in less mineralized central regions compared to regions far from the neutral axis of the bone. ConclusionWeight bearing physical activity is more effective in bone remodeling when the musculoskeletal loading is more intense and of short duration and, under these conditions, less mineralized regions are more positively impacted.

Impact Of COVID-19 Stay At Home Public Health Restrictions On Physical Activity

The public health response to the COVID-19 pandemic may have changed recreational physical activity behavior. Due to ‘Stay at Home’ restrictions, gyms and indoor exercise facilities were closed by public health orders in many states. PURPOSE: To understand how recreational physical activity behaviors changed based on state-wide COVID-19 Stay at Home restrictions. METHODS: Data on recreational physical activity behavior from three time periods were collected via a retrospective internet survey (n = 144) based on a modified International Physical Activity Questionnaire. Respondents reported days per week and duration of walking, vigorous, and moderate physical activity before, during, and after Stay at Home restrictions in a Western state (March 26 - May 1, 2020.) Days per week data were analyzed across time periods with a one-way repeated measures ANOVA. Friedman’s test was used to analyze minutes per week data across time periods. RESULTS: The one-way ANOVA examining days of vigorous physical activity showed a significant effect (F(2,286) = 4.48, p = .012). Post hoc analysis using the Holm correction revealed a statistically significant decrease in days of vigorous physical activity from before to after restrictions (mean difference = .39 days, p = .014). The analysis of weekly minutes of activity showed a significant difference between time periods for walking (Χ2(2) = 22.44, p < .001). Conover’s post hoc comparisons with Bonferroni correction indicated minutes of walking were greater during the restrictions (Mdnd = 150) compared to before (Mdnb = 110, p < .001) and after (Mdna = 120, p = .002). Vigorous physical activity was also different across time periods (Χ2(2) = 6.73, p = .035), with median vigorous physical activity being lower after restrictions (Mdna = 90) than before (Mdnb = 120) with p = .039. CONCLUSIONS: COVID-19 restrictions had an impact on recreational physical activity. Walking minutes per week increased during restrictions and returned to pre-restriction levels afterwards, with no significant change in number of days of walking per week. Vigorous activity decreased across the time periods in days and duration and did not return to initial levels. It may be important to consider and promote alternative physical activity options in public health situations that require restrictions.

Effect of Anterior Cruciate Ligament Rupture on Physical Activity, Sports Participation, Patient-Reported Health Outcomes, and Physical Function in Young Female Athletes

Background: Return to sports (RTS) is frequently considered an indicator of successful recovery after anterior cruciate ligament reconstruction (ACLR). However, despite the well-recognized health benefits of physical activity (PA), little is known about objectively measured PA in the 1 to 2 years after ACLR. Given that young female athletes have a high prevalence of ACLR and lower RTS rates as compared with their male counterparts, an in-depth examination of PA in this subgroup is warranted. Hypothesis: We hypothesized that female youth and young adults who have had ACLR in the previous 1 to 2 years would have less moderate or vigorous PA (MVPA) compared with healthy matched controls. We also hypothesized that the ACLR group would report lower levels of sports participation, patient-reported health outcomes, and physical function. Study Design: Cohort study; Level of evidence, 3. Methods: Participants included 51 female athletes with primary unilateral ACLR for a sports-related injury in the previous 1 to 2 years and 51 age- and sports-matched controls. Outcomes included objectively measured PA (GT3X accelerometers), previous and current sports participation and RTS, body mass index, Knee injury and Osteoarthritis Outcome Score (KOOS), triple single-leg hop, and one-leg rise. Mean within-pair differences with 95% CIs were used to assess differences between groups across all outcomes. Multivariable linear regression (clustered by pair) was used to examine whether the ACLR group had less MVPA than did the age- and sports-matched control group, adjusting for total wear time, age, time since injury, and body mass index. Results: Median age was 17.8 years (range, 14.6-22.6 years). There was no significant difference between groups in MVPA. However, the injury group had fewer mean minutes per day of vigorous PA (–1.22; 95% CI, −2.40 to −0.04), poorer KOOS values on all subscales, and shorter triple single-leg hop distance. In the injury group, 28 (55%) returned to sports, including 14 (27.5%) who returned at preinjury performance level. Across both groups, over one-third changed their most important sport, shifting toward an individual-based sport. Conclusion: At 1 to 2 years after ACLR, female athletes demonstrated no differences in combined MVPA and only a very small reduction in vigorous PA, yet they had higher levels of self-reported knee pain and symptoms, reduced knee function in sports, lower quality of life, and poorer objective knee function compared with matched controls.

Retrospective Evaluation of High School Sport Participation and Adult BMI Status, Physical Activity Levels, and Motivation to Exercise

Previous research reports that children who are physically active are more likely to be active adults. The primary purpose of this study was to retrospectively examine participants’ high school sport type and compare current adult Body Mass Index (BMI) status, physical activity (PA) level, and motivation to exercise. Adults who participated in individual sports reported to have a significantly higher number of individuals in the normal BMI category (F = 16.25, p &lt; 0.05). Participants who competed in individual sports while in high school reported to partake in significantly more days of vigorous physical activity as an adult (F = 5.7, p &lt; .05). The two exercise motivation constructs competence (r = .361, p &lt; .01) and relatedness (r = .219, p &lt; .01) were found to be the most prominently associated with overall physical activity levels between both individual and team sport participants. There were more days of vigorous PA and more individuals in the normal BMI category who participated in individual sports. The current study does not neglect the importance of team sports, but suggests that schools and communities should consider offering more individual sports/activities and emphasize the acquisition of individual skills associated with lifelong activities.

Association between fear of hypoglycemia and physical activity in youth with type 1 diabetes: The SEARCH for diabetes in youth study.

Youth with type 1 diabetes (T1D) are encouraged to participate in physical activity (PA). Studies have identified fear of hypoglycemia (FOH) as a barrier to participating in PA. To examine (a) PA patterns in youth with T1D by age group and (b) the relationship between both parental and youth FOH and youth PA. A cross-sectional analysis from the SEARCH cohort study visit of youth ages 10 to 17 years with T1D (n = 1129) was conducted. Linear regression models estimated the association between self-reported number of days of vigorous PA (VPA) and moderate PA (MPA) and both youth- and parent-reported FOH. Multivariable models were adjusted for age, sex, race, duration of T1D, HbA1c, use of continuous glucose monitoring (CGM), recent severe hypoglycemia, primary insulin regimen, and BMI. Participants were 52% female, had mean (sd) age 14.4 (4.2) years, diabetes duration 7.5 years (1.8), HbA1c 9.2% (1.7). Older youth were less likely to engage in VPA (P < .01), or sports teams (P < .01), but more likely to engage in MPA (P < .01). Higher youth FOH (behavior subscale) was associated with increased levels of VPA (β (se) 0.30 (0.11), P = .01) but not significantly associated with MPA (P = .06). There was no statistically significant association between parental FOH and youth PA. In SEARCH participants with T1D, VPA, and team sports participation declined with age, while MPA increased. We observed that higher scores on the youth FOH behavioral subscale were associated with increased VPA levels, suggesting that FOH may be less of a barrier to PA than previously thought.

Parental and peer social support is associated with healthier physical activity behaviors in adolescents: a cross-sectional analysis of Texas School Physical Activity and Nutrition (TX SPAN) data

BackgroundParental and peer support can influence children’s physical activity; however, these associations have not been fully examined in a multi-ethnic population across early and late adolescence. The objective of this study was to examine associations between perceived parental/peer social support, perceived parental disapproval for not exercising, and physical activity/screen time behaviors among a multi-ethnic sample of adolescents.MethodsThe Texas School Physical Activity and Nutrition (TX SPAN) survey is a cross-sectional statewide probability-based survey, used to assess obesity-related behaviors such as diet and physical activity. The SPAN 2009–2011 study measured 8th and 11th grade students using a self-report questionnaire with established psychometric properties, along with objectively measured height and weight. Associations were examined using multiple logistic and linear regression.ResultsFor every 1-point increase in parental physical activity support, adolescents had 1.14 higher odds of engaging in five or more days of moderate physical activity per week (p < 0.001), and 1.12 higher odds of engaging in three or more days of vigorous physical activity per week (p < 0.001). For every 1-point increase in peer physical activity support, adolescents had 1.17 higher odds of engaging in five or more days of moderate physical activity per week (p < 0.001), and 1.15 higher odds of engaging in three or more days of vigorous physical activity per week (p < 0.001).ConclusionsParental and peer social support is associated with positive physical activity behaviors in adolescents. Strategies to focus on parent and peer support should be integral to intervention programs designed to increase physical activity in adolescents in middle and high schools.

Gotta Catch 'Em All: Impact of Pokémon Go on Physical Activity, Sitting Time, and Perceptions of Physical Activity and Health at Baseline and Three-Month Follow-Up.

Objective: The objective was to examine differences in physical activity, sitting time and perceptions of physical activity and health between Pokémon Go users and nonusers at baseline (launch of the application in the United Kingdom) and 3-month follow-up. Materials and Methods: The self-administered, short version of the 7-day recall, International Physical Activity Questionnaire, was adapted to develop the "Physical Activity and Pokémon Go questionnaire," which was distributed using social media. Four weeks after the launch of the application, 461 participants (n = 193 male, n = 265 female, n = 3 transgender) had completed the questionnaire. At 3-month follow-up, 127 participants repeated the questionnaire. Results: At baseline, mixed models analysis of variance (ANOVA) revealed main effects for Pokémon Go users versus nonusers in the amount of days of vigorous physical activity, moderate physical activity, and walking (All P < 0.01). Users reported that they undertook less days of vigorous physical activity than nonusers, but more days of moderate physical activity and walking. There were no differences in body mass index, minutes of vigorous or moderate physical activity, and walking, or sitting on weekdays (All P > 0.05). Repeated measures ANOVA identified increased sitting on weekdays (P < 0.05), but maintained vigorous, moderate and walking physical activity behaviors in users who remained users. Conclusion: Pokémon Go use can increase the frequency of days of physical activity benefitting health. Users at both time points maintained their physical activity behaviour, but increased sitting time on weekdays, highlighting that another intervention to prevent sitting is needed.

Development of Step-Count Cut Points for School-Day Vigorous Physical Activity.

Background No study has established step-count cut points for varying amounts of accelerometer-assessed vigorous physical activity (VPA) accrued during the school day in children. The purpose of this study was to establish step-count cut points for discriminating children meeting VPA in 5 minutes, 10 minutes, 15 minutes, and 20 minutes per 7-hour school day. Methods Participants were a convenience sample of 1,053 children (mean age = 8.4 (1.8) years) recruited from 5 schools from the Mountain West region of the USA. Data within students were observed across multiple semesters totaling 2,119 separate observations. Step counts and time in VPA were assessed using ActiGraph wGT3X-BT triaxial accelerometers that were worn during the entirety of a 7-hour school day for one school week. Average censored step counts and minutes in VPA were calculated across 3 to 5 days. Receiver operating characteristic (ROC) curves were employed to derive step counts via calculation of the maximum Youden J statistic. Results Area-under-the-curve (AUC) scores ranged from AUC = 0.81 (95% CI: 0.78–0.83; p < 0.001) for meeting at least 5 minutes of VPA to AUC = 0.94 (95% CI: 0.88–1.00, p < 0.001) for meeting at least 20 minutes of VPA. Approximately 3,460 steps best discriminated children meeting at least 5 minutes of VPA (sensitivity = 74.0%, specificity = 74.0%, and accuracy = 74.1%) and approximately 5,628 steps best discriminated children meeting at least 20 minutes per day of VPA (sensitivity = 85.7%, specificity = 95.1%, and accuracy = 95.1%). Conclusion Step counts can discriminate with reasonable accuracy children that meet at least 5 minutes of school-day VPA and with strong accuracy children that meet 20 minutes of school-day VPA.

Effect of vigorous physical activity on blood lipid and glucose.

The aim of the study is to investigate how the participation of vigorous physical activities in the health examination contributes to blood lipid and blood glucose. A total of 56,810 workers from the Ulsan University Hospital in Ulsan, Subjects were tested for health checkups from February to November in 2016. The subject is those who does not have medical history, current ailments, and medication histories, and selected those who conducted the study of subjects tested to research. And this study did not consider their drinking and smoking. The final selected population was 11,557 and categorized as a vigorous physical activity of the health survey items. In this study, the group participated by the vigorous physical activity activities, group 1 (n= 70) had more than 6 days of vigorous physical activity, group 2 (n= 2,960) is 3 to 5 days of vigorous physical activity, the group 3 (n= 7,389) is 1 to 2 days of vigorous physical activity. The group 4 (n= 1,138) were classified as those who did not perform vigorous physical activity. To achieve the purpose of the study, the questionnaire examined blood lipid and blood glucose, using questions related to physical activity related to health examination in the Ulsan University Hospital. We obtained the mean and standard deviation for each group and conducted the one-way analysis of variance as an independent variable. Post hoc is least significant difference test and significant level is 0.05. Vigorous physical activity more than 3 days of participation had a positive affect high-density lipoprotein cholesterol and triglyceride. But participation in vigorous physical activity did not affect blood glucose.

Associations of Physical Activity and Sedentary Behavior With Atopic Disease in United States Children

MA Strom, JI Silverberg. J Pediatr. 2016;174:247–253 To determine the association of eczema, asthma, and hay fever with sedentary behavior, including television and/or video game usage, sports participation, and days of vigorous physical activity. The authors of the study also sought to determine if sleep disturbances modify these associations. The study included 133 107 children aged 6 to 17 years enrolled in the 2003–2004 and 2007–2008 National Survey of Children’s Health. Data from 2 cross-sectional studies were analyzed by using bivariate and multivariate logistic regression models to look for associations between eczema, hay fever, and asthma and vigorous physical …

Couples' body composition and time-to-pregnancy.

Is couples' body compositions associated with reduced fecundity as measured by a longer time-to-pregnancy (TTP)? Couples whoseBMI are within obese class II (≥35 kg/m2) have a longer TTP in comparison to leaner (BMI < 25 kg/m2) couples, observed only when both partner's BMI was jointly modeled. Extremes of BMI have been associated with a longer TTP and with less successfulassisted reproductive technology (ART) outcomes. To our knowledge, the association between measured adiposity in both partners of the couple and prospectively measured TTP has not been investigated despite pregnancy being a couple-dependent outcome. Prospective cohort with preconception recruitment of 501 couples trying for pregnancy and recruited from 16 counties in Michigan and Texas between 2005 and 2009. Couples were followed daily for up to a year of trying or until ahCG pregnancy. In-home standardized anthropometric assessment of couples upon enrollment included measured height and weight using calibrated stadiometers and scales, and measured waist and hip circumferences. Discrete-time Cox regression was used to estimate fecundability odds ratios (FORs) and 95% CIs, controlling for potential confounders including age, number of days of vigorous physical activity, serum cotinine concentration, race, education, free cholesterol levels for each partner in partner-specific models and for both partners in couple-based models as well as average acts of intercourse per menstrual cycle and menstrual cycle regularity. Neither male nor female partner's BMI was associated with TTP when modeled individually. However, obese class II (BMIs ≥ 35.0 kg/m2) couples experienced a reduction in fecundability in both unadjusted (FOR = 0.45; 95% CI: 0.23, 0.89) and adjusted analyses (aFOR = 0.41; 95% CI: 0.17, 0.98) resulting in a longer TTP in comparison to couples with normal BMI (<25 kg/m2). Female partners' waist circumference ≥88.6 cm was associated with a significant reduction in fecundability in the unadjusted model (FOR = 0.64; 95% CI: 0.48, 0.86) but not in the adjusted model (aFOR = 0.77; 95% CI: 0.55, 1.08) in comparison to females with a smaller (<80 cm) circumference. BMI and waist circumference are proxy measures of body composition and residual confounding cannot be eliminated. Findings may not be generalizable to clinical populations. This is the first cohort study known to us with preconception enrollment of couples who underwent standardized anthropometric assessment and for whom TTP was prospectively measured. The findings underscore the importance of considering both partners' body composition for fecundity outcomes and preconception guidance. Supported by the Intramural Research Program of the Eunice Kennedy Shriver National Institute of Child Health and Human Development (Contracts #N01-HD-3-3355, N01-HD-3-3356 and N01-HD-3-3358). The authors have no competing interests. N/A.

Планування фізичних навантажень на весняний період у чоловіків на основі їх фізичного стану

Purpose: to find the features of physical condition of men before their vigorous physical activity sessions in the winter season, and test their effectiveness. Material & Methods: investigated body mass index, physical condition of method by Baevsky in men 35 – 48 years leading a healthy lifestyle. Research conducted morning and evening every day. Results were compared: the day before, the day of vigorous physical activity, and with average per month. Physical activity was studied by the IPAQ method. Results: found significant (p<0,05) differences in the physical condition of men before and the day of physical activity of high intensity. Marked changes were: body weight, the heart rate, the adaptive capacity by Baevsky. The most significant figure identified as a marker. To test its effectiveness was offer to men plan individual vigorous physical activity under this marker. The result was significant (p<0,05) increase the number and duration of vigorous physical activity, better physical condition to 10,73%. Conclusions: the physical condition of age men plays an important role in planning their vigorous physical activity. Comparative deconditioning from the previous day for the test Baevsky 3,09%, can be used for operational planning of physical activity of high intensity on that day.

Promoting Physical Activity With the Out of School Nutrition and Physical Activity (OSNAP) Initiative: A Cluster-Randomized Controlled Trial.

Millions of children attend after-school programs in the United States. Increasing physical activity levels of program participants could have a broad effect on children's health. To test the effectiveness of the Out of School Nutrition and Physical Activity (OSNAP) Initiative in increasing children's physical activity levels in existing after-school programs. Cluster-randomized controlled trial with matched program pairs. Baseline data were collected September 27 through November 12, 2010, with follow-up data collected April 25 through May 27, 2011. The dates of our analysis were March 11, 2014, through August 18, 2015. The setting was 20 after-school programs in Boston, Massachusetts. All children 5 to 12 years old in participating programs were eligible for study inclusion. Ten programs participated in a series of three 3-hour learning collaborative workshops, with additional optional opportunities for training and technical assistance. Change in number of minutes and bouts of moderate to vigorous physical activity, vigorous physical activity, and sedentary activity and change in total accelerometer counts between baseline and follow-up. Participants with complete data were 402 racially/ethnically diverse children, with a mean age of 7.7 years. Change in the duration of physical activity opportunities offered to children during program time did not differ between conditions (-1.2 minutes; 95% CI, -14.2 to 12.4 minutes; P = .87). Change in moderate to vigorous physical activity minutes accumulated by children during program time did not differ significantly by intervention status (-1.0; 95% CI, -3.3 to 1.3; P = .40). Total minutes per day of vigorous physical activity (3.2; 95% CI, 1.8-4.7; P < .001), vigorous physical activity minutes in bouts (4.1; 95% CI, 2.7-5.6; P < .001), and total accelerometer counts per day (16,894; 95% CI, 5101-28,686; P = .01) increased significantly during program time among intervention participants compared with control participants. Although programs participating in the OSNAP Initiative did not allot significantly more time for physical activity, they successfully made existing time more vigorously active for children receiving the intervention. clinicaltrials.gov Identifier: NCT01396473.