Average Physical Activity Level Research Articles

Evaluating knowledge, attitude, and physical activity levels related to cardiovascular disease in Egyptian adults with and without cardiovascular disease: a community-based cross-sectional study

BackgroundCardiovascular disease (CVD) represents a significant health challenge in Egypt, yet there exists limited understanding regarding the knowledge, attitudes, and physical activity levels associated with CVD. These factors play a pivotal role in developing effective prevention and management strategies. Hence, this cross-sectional study aimed to evaluate Egyptian adults’ knowledge, attitudes, and physical activity (KAP) levels.MethodsData were collected using a previously validated questionnaire encompassing demographic characteristics, CVD knowledge (including risk factors and symptoms), attitudes toward CVD, and self-reported physical activity levels. The survey was distributed among social media channels, and trained researchers administered the questionnaire via face-to-face interviews with adult patients with and without CVD admitted to Cairo University Hospital clinics.ResultsThe study involved 591 participants, of whom 21.7% had CVD. Overall, participants exhibited poor knowledge regarding CVD, with a mean score of 21 ± 7 out of 40, equivalent to 52.5%. Attitudes toward CVD were moderate, with a mean score of 66.38 ± 8.7 out of 85, approximately 78%. Physical activity levels per week were also moderate, averaging 1188 MET-min with a range of 1121–18,761. Subgroup analysis revealed that individuals with CVD had lower average knowledge, attitude, and physical activity levels than those without CVD. Working in the healthcare field was a predictor of higher knowledge score (standard error (SE) 5.89, 95% confidence interval (CI) 4.61 to 7.17, P < 0.001), while those with CVD and smokers were predictors of lower attitude score (SE -4.08, 95% CI -6.43 to -1.73, P < 0.001) and (SE -2.54, 95% CI -4.69 to -0.40, P = 0.02), respectively.ConclusionThe study findings highlight a significant disparity in knowledge, attitudes, and physical activity levels related to CVD in Egypt. Targeted interventions aimed at improving awareness, fostering positive attitudes, and promoting physical activity among individuals at risk for CVD are crucial for effective prevention and management.

Enhancing Awareness of Physical Activity Guidelines among Saudi College Students: The 150 Minutes Program

Objective. This study evaluates the effectiveness of the “150 Minutes Program” in increasing awareness and fostering positive behavior changes regarding recommended physical activity guidelines among Saudi college students. Initiated as part of the national “Sports for All Challenge,” this program targets college students to improve their understanding of the U.S. Department of Health and Human Services’ physical activity guidelines. Methods. Engaging over 250 Saudi college students from 17 student groups across the United States, the program employs two intervention strategies: a general awareness campaign and the application of physical activity guidelines tailored to the Saudi student community. The study assesses the program’s impact through pre-/post-surveys, evaluating changes in participants’ awareness levels and physical activity behaviors. Results. A total of 110 participants completed either the presurvey (n = 35) or postsurvey (n = 75). Results indicate a significant rise in participants’ awareness of recommended physical activity guidelines, increasing from an initial 4% to 22.9%. Postprogram surveys reveal positive shifts in physical activity behaviors, with 51.4% of participants meeting adult physical activity guidelines, compared to 40% before the program. The average physical activity levels also demonstrated an increase. Conclusion. The 150 Minutes Program proves effective not only in enhancing awareness but also in instigating positive physical activity behavior changes among Saudi college students. The study contributes valuable insights to the evolving landscape of physical activity interventions within college populations, emphasizing the need for targeted programs, and collaborations with student organizations to ensure sustained impact and scalability.

Determinants of Physical Activity among Older Adults Through Social Ecological Theory: 2021 Community Health Survey

PURPOSE This study aimed to analyze factors associated with physical activity (PA) in older adults based on social ecological theory.METHODS Secondary analysis was conducted using raw data from the 2021 Community Health Survey. after excluding 129 non-responses in the PA domain, a total of 74,363 individuals were included in the final analysis. A total of eight factors, including personal (level of depression, history of falls), relational (relationships with neighbors, living alone), community (satisfaction with the local community system, safety), and environmental factors (living environment, natural environment), were selected in accordance with the key points of social ecological theory. To analyze social ecological factors related to the PA of older adults, we conducted a decision tree analysis using Chi-square automatic interaction detection (CHAID).RESULTS The average PA level among older adults was approximately 136 minutes, but the mode and median were both 0 minutes. A total of 20.2% of older adults met the physical activity recommendations, while 79.8% did not. According to the first split of the decision tree, living alone was the most relevant factor associated with the PA of older adults, followed by depression and falls. Older adults living alone, with a depression score of 10 or higher, and who had experienced a fall within the past year, were least likely to meet the PA recommendations.CONCLUSIONS This study urgently suggests that PA programs should target older adults living alone, experiencing depression, and falls.

A Field Study to Assess Physical Activity Levels During Weekdays Among Students in the First Cycle and its Relationship with Lower Limb Muscle Strength

This study aimed to assess physical activity levels during 3 school days among first cycle students and its relationship with lower limb muscle strength. Twenty-eight students from the Governor of Muscat were participated in this study, (age: 11.8±0.3 years, height: 9.0±148 cm, mass Body: 14.5±34.8 kg, BMI: 5.3±19.2 kg.m-2 To assess physical activity levels, the ActiGraph GT3X device was used for 3 school days during the week (from 8:00 am to 12:00 pm, daily). All participating performed two tests of lower limb muscle strength (CMJ - FCM). Study results showed that the average physical activity levels of students during 3 school days were (455.9± 56.7minutes) and (26.3±6.6 minutes) for both sedentary physical behavior (SPA) and high-intensity physical activity (VPA), respectively. The results also revealed that the level of moderate and vigorous physical activity level (MVPA) during 3 days of school reached (67.9 ±17.01minutes), which is approximately (22.6 minutes per day), meaning that there was a noticeable decrease in the levels of physical activity practiced during school days (3 days). per week for first cycle students. The results also showed that there was no relationship between all physical activity levels (SPA, LPA, MPA, VPA, MVPA) and lower limb muscle strength tests (CMJ - FCM) among the students (0.05&lt;p).

Assessment of Dyspnoea, Physical Activity, and Back Pain Levels in Students at Medical Universities after the COVID-19 Pandemic in Poland.

The purpose of this research was to assess the extent of dyspnoea, physical activity (PA), and back pain complaints and the association of dyspnoea, PA, and back pain complaints with PA in post-COVID-19 students at medical universities in Poland. An online survey was carried out among Polish medical students (213 women and 204 men) who had had a positive test for SARS-CoV-2 within the last year. The Medical Research Council (MRC) dyspnoea scale was used to assess the degree of dyspnoea. The International Physical Activity Questionnaire (IPAQ) was used to determine the level of PA. The Oswestry Disability Index (ODI) and the Neck Disability Index (NDI) were used to assess back discomfort. The study group had average levels of PA, with median total activity significantly lower in women (median total activity for women was 1189 and for men was 2044, while the standard deviation for women was 1419 and for men was 1450). More than 93% of the students reported no symptoms of dyspnoea. The following results were observed for ODI (median of 1.2 for women and 1.7 for men and standard deviation of 3.1 for women and 4.0 for men) and for NDI (median of 2.8 for women and 2.5 for men, standard deviation of 4.3 for women and 4.0 for men). Cervical spine pain was more frequent and severe. There are small, statistically significant correlations between the MRC and IPAQ measures and the ODI and NDI and IPAQ. In the study group of students of medicine, dyspnoea linked with a history of COVID-19 is not an issue. Post-pandemic PA levels should be increased in this group, with particular attention to female students. Urgent measures are also needed to prevent cervical pain in students at medical universities in Poland.

Unraveling the interplay between daily life fatigue and physical activity after subarachnoid hemorrhage: an ecological momentary assessment and accelerometry study

BackgroundFatigue is one of the most commonly reported symptoms after subarachnoid hemorrhage (SAH) and is indirectly associated with physical activity (PA). Associations between fatigue and PA are primarily examined based on conventional measures (i.e. a single fatigue score or average PA levels), thereby assuming that fatigue and PA do not fluctuate over time. However, levels of fatigue and PA may not be stable and may interrelate dynamically in daily life. Insight in direct relationships between fatigue and PA in daily life, could add to the development of personalized rehabilitation strategies. Therefore we aimed to examine bidirectional relationships between momentary fatigue and PA in people with SAH.MethodsPeople (n = 38) with SAH who suffer from chronic fatigue were included in an observational study using Ecological Momentary Assessment (EMA) and accelerometry. Momentary fatigue was assessed on a scale from 1 to 7 (no to extreme fatigue), assessed with 10–11 prompts per day for 7 consecutive days using EMA with a mobile phone. PA was continuously measured during this 7-day period with a thigh-worn Activ8 accelerometer and expressed as total minutes of standing, walking, running and cycling in a period of 45 min before and after a momentary fatigue prompt. Multilevel mixed model analyses including random effects were conducted.ResultsMean age was 53.2 years (SD = 13.4), 58% female, and mean time post SAH onset was 9.5 months (SD = 2.1). Multilevel analyses with only time effects to predict fatigue and PA revealed that fatigue significantly (p < 0.001) increased over the day and PA significantly (p < 0.001) decreased. In addition, more PA was significantly associated with higher subsequent fatigue (β = 0.004, p < 0.05) and higher fatigue was significantly associated with less subsequent PA (β=-0.736, p < 0.05). Moreover, these associations significantly differed between participants (p < 0.001).ConclusionsBy combining EMA measures of fatigue with accelerometer-based PA we found that fatigue and PA are bidirectionally associated. In addition, these associations differ among participants. Given these different bidirectional associations, rehabilitation aimed at reducing fatigue should comprise personalized strategies to improve both fatigue and PA simultaneously, for example by combining exercise therapy with cognitive behavioral and/or energy management therapy.

Gender differences in the distribution of children’s physical activity: evidence from nine countries

BackgroundPhysical activity in childhood is thought to influences health and development. Previous studies have found that boys are typically more active than girls, yet the focus has largely been on differences in average levels or proportions above a threshold rather than the full distribution of activity across all intensities. We thus examined differences in the distribution of physical activity between girls and boys in a multi-national sample of children.MethodsWe used the harmonised International Children Accelerometry Database (ICAD), including waist-worn accelerometry data from 15,461 individuals (Boys: 48.3%) from 9 countries. Employing Generalised Additive Models of Location, Shape, and Scale (GAMLSS) we investigated gender differences in the distribution of individuals, including comparisons of variability (SD) and average physical activity levels (mean and median) and skewness. We conducted this analysis for each activity intensity (Sedentary, Light, and Moderate-to-Vigorous (MVPA)) and a summary measure (counts per minute (CPM)).ResultsSizable gender differences in the distribution of activity were found for moderate to vigorous activity and counts per minute, with boys having higher average levels (38% higher mean volumes of MVPA, 20% higher CPM), yet substantially more between-person variability (30% higher standard deviation (SD) for MVPA, 17% higher SD for CPM); boys’ distributions were less positively skewed than girls. Conversely, there was little to no difference between girls and boys in the distribution of sedentary or light-intensity activity.ConclusionsInequality in activity between girls and boys was driven by MVPA. The higher mean volumes of MVPA in boys occurred alongside greater variability. This suggests a need to consider the underlying distribution of activity in future research; for example, interventions which target gender inequality in MVPA may inadvertently lead to increased inequality within girls.

TINGKAT AKTIVITAS FISIK DAN STATUS GIZI SISWA SEKOLAH DASAR DI KOTA SURABAYA PASCA PTM 100% PANDEMI COVID-19

Covid-19 pandemic had an effect on students tegarding changes in sedentary lifestyle during studying at home, coupled with advances in technology which has caused student to prefer games that less phsycal activity, this is feared to still be a habit for students, after covid-19 pandemic. Studying at school that has been proclaimed by Surabaya government, causing a decrease an increased risk of obesity in student. Therefore this study aims to provide an overview the physical activity level and nutritional status of elementary school in Surabaya. this study were examining nutritional status through Body Mass Index and physical activity level using (IPAQ) for student in three elementary schools in Surabaya. the average nutritional status of student based on BMI/age is 19,5±4,02, 1,02% severely thinnes, 21,94% thinnes 56,63% normal, 16,83% overweight and 3,57% obese, the average level of physical activity is 1037±851 MET-min/week, 46,42% low, 40,81% moderate, 12,75% high. This shows that elementary school student in Surabaya have good nutritional status but have a level activity that tends to be less.

Let's get physical! A time‐lagged examination of the motivation for daily physical activity and implications for next‐day performance and health

AbstractAlthough physical activity is presumed to influence individuals’ work, motivation for daily physical activity and resulting implications for job performance are absent in the management literature. Integrating conservation of resources theory with the literature on physical activity, we build a theoretical model to address the nomological network of physical activity, inclusive of a predictor (autonomous motivation), mediators (resource caravans: physical, affective, and cognitive), outcomes (performance and health), and boundary condition (job self‐efficacy). We test our theoretical model in two experience sampling studies that track employees’ physical activity across 10 workdays, using multiple data sources (self, supervisor, and objective). Findings across two studies consistently reveal that autonomous motivation prompts employees’ average levels of daily physical activity, which, on a daily basis, generates resource caravans—physical (sleep quality), affective (vigor), and cognitive (task focus)—that, in turn, variously benefit next‐day performance (task and creative performance) and health (somatic symptoms). Next‐day task performance is enhanced through increased task focus, while next‐day somatic symptoms are reduced through improved sleep quality and vigor. Further, job self‐efficacy strengthens the benefits of daily physical activity on work outcomes through sleep quality and task focus but not vigor.

24-Hour Rest-Activity Rhythm in Middle-Aged and Older Persons with Depression

Changes in rest or active states were clinically observed in persons with depression. However, the association between symptoms of depression and 24 h rest-activity rhythm (RAR) components that can be measured using wearable devices was not clarified. This preliminary cross-sectional study aimed to clarify the 24 h RAR components associated with symptoms of depression in middle-aged and older persons. Participants were recruited from among inpatients and outpatients requiring medical treatment at Akita University Hospital for the group with depression and from among healthy volunteers living in Akita prefecture, Japan, for the healthy control group. To assess RAR parameters including inter-daily stability (IS), intra-daily variability (IV), relative amplitude (RA), and average physical activity level for the most active 10 h span (M10) or for the least active 5 h span (L5), all the participants were instructed to wear an Actiwatch Spectrum Plus device on their non-dominant wrist for seven days. Twenty-nine persons with depression and 30 controls were included in the analysis. The results of a binomial regression analysis showed that symptoms of depression were significantly associated with a high IS value (odds ratio [OR], 1.20; 95% confidence interval [95% CI], 1.01-1.44; p = 0.04) and a low M10 value (OR, 0.85; 95% CI, 0.74-0.96; p = 0.01). Our findings suggest potential components of 24 h RAR are associated with depression.

Virtual reality training for police officers: a comparison of training responses in VR and real-life training

ABSTRACT In policing, Virtual Reality scenario-based training (VR SBT) is being explored to complement real-life scenario-based training (RL SBT). We investigated whether relevant training responses in VR SBT, namely heart rate (HR), level of physical activity, mental effort, and perceived stress, resemble those in RL SBT. Utilizing a within-subject study design, we investigated the training responses of 237 police officers of the Dutch National Police. We found that the maximum HR and average level of physical activity were significantly higher in RL SBT, whereas invested mental effort was significantly higher in VR SBT. No significant differences were found in average HR and perceived stress. We also found that perceived stress in VR was predicted by participants’ VR experiences such as engagement with VR and experience of negative effects, but not by participant characteristics. Participants’ mental effort in VR was predicted by their VR experiences and participant characteristics, particularly gaming frequency. In conclusion, VR SBT can elicit perceived stress, mental effort, and average HR that resemble or exceed responses in RL SBT, providing a promising tool to complement police training.

The Effect Of Physical Activity Level In Body Mass Index During The New Normal Period

The level of physical activity is one indicator of whether a person is active. This study aims to see the effect of physical activity level on body mass index. The method used in this study is the correlational method which aims to detect the level of physical activity on body mass index during the new normal period. The population in this study were all FIK Cenderawasih University students totalling 387 students. Determined the sample using a simple random sampling technique to obtain a sample of 97 students aged 19 – 24 years consisting of 61 men and 36 women. The data collection technique used the International Physical Activity Questionnaire (IPAQ) instrument to measure the level of physical activity and anthropometric measurements of the body to obtain BMI values. The data analysis results showed that students' physical activity level was dominant in the high category 54.6%, the medium category 30.9%, and the low category 14.4%, besides that. There were differences between the activity levels of males and females. The average level of physical activity for men is in the high category, and the average for women is in the medium category. The study's results found a positive effect of physical activity on the BMI of FIK Cenderawasih University students during the new average period. &#x0D;

Within-day bidirectional associations between physical activity and affect: A real-time ambulatory study in persons with and without depressive and anxiety disorders.

Ambulatory assessments offer opportunities to study physical activity level (PAL) and affect at the group and person-level. We examined bidirectional associations between PAL and affect in a 3-h timeframe and evaluated whether associations differ between people with and without current or remitted depression/anxiety. Two-week ecological momentary assessment (EMA) and actigraphy data of 359 participants with current (n = 93), remitted (n = 176), or no (n = 90) Composite International Diagnostic Interview depression/anxiety diagnoses were obtained from the Netherlands Study of Depression and Anxiety. Positive affect (PA) and negative affect (NA) were assessed by EMA 5 times per day. Average PAL between EMA assessments were calculated from actigraphy data. At the group-level, higher PAL was associated with subsequent higher PA (b = 0.109, p < .001) and lower NA (b = -0.043, p < .001), while higher PA (b = 0.066, p < .001) and lower NA (b = -0.053, p < .001) were associated with subsequent higher PAL. The association between higher PAL and subsequent lower NA was stronger for current depression/anxiety patients than controls (p = .01). At the person-level, analyses revealed heterogeneity in bidirectional associations. Higher PAL may improve affect, especially among depression/anxiety patients. As the relationships vary at the person-level, ambulatory assessments may help identify who would benefit from behavioral interventions.

Positive Relationship Between Physical Activity and Emotional Mental Health In Housewives

The purpose of this study was to determine the relationship between physical activity and emotional mental health in housewives. This research is correlational with a cross-sectional study approach. A total of 35 women with criteria, namely being housewives, aged 20-30 years, living with their husbands, having children at least 2 years old, domiciled in Malang Regency, East Java, Indonesia voluntarily participated as respondents in this study by filling out and signing informed consent. The level of physical activity in this study was measured using the Global Physical Activity Questionnaire (GPAQ) and emotional mental health levels were measured using the Depression, Anxiety, and Stress Scales (DASS42). Measurements of the level of physical activity and the level of emotional mental health were carried out simultaneously. The data analysis technique used the Chi-Square test with a statistical software package for social sciences (SPSS) version 21.0 with a significance level of 5%. The results of the analysis of the average level of physical activity of housewives in the medium category were 45.72% (16 people), the low category was 25.71% (9 people) and the high category was 28.57% (10 people). The average emotional-mental health of housewives in the normal category was 45.72% (16 people), mild 17.14% (6 people), moderate 20.00% (7 people), and heavy 17.14% ( 6 people). The results of the Chi-Square test show that there is a positive relationship between physical activity and emotional-mental health with the Pearson Chi-Square value of 55.222 and p-value=0.000. Based on the results of the study, it was concluded that there was a positive relationship between physical activity and emotional-mental health in housewives.

Physical activities, dietary profile and nutritional status of students from the Higher Institute of Physical and Sports Education (ISEPS), Marien Ngouabi University in Congo-Brazzaville

A study of the physical activities, food profile and nutritional status of the students was carried out at the Higher Institute of Physical and Sports Education (ISEPS) of Marien Ngouabi University in Congo-Brazzaville. Its objective was to assess the physical activity level, food profile and nutritional status of these students in order to compare them with the current recommendations. A food consumption survey that included all activities performed during the day was conducted on 291 students ranging in age from 18 to 48 years. The weekly method was used. Energy expenditure was calculated by multiplying a base expenditure by the physical activity level (PAL). The individual's nutritional status was determined using the body mass index (BMI). Chi-square and ANOVA tests were used for statistical analysis. The students' physical activity level was high, with an average PAL of 1.89. Energy expenditure was 2531.64 kcal for girls and 3045.18 kcal for boys. These expenditures were consistent with moderately active athletes' recommendations. These students' dietary profiles did not adhere to current nutritional recommendations, with unbalanced, non-diversified food rations and certain meals skipped or even eliminated. Despite the high prevalence of overweight, including obesity (17.5% overweight and 9.3% obesity) and a few cases of underweight (6.5%), the nutritional status was normal overall (23.91 kg/m2 in girls and 23.88 kg/m2 in boys). The findings of this study showed that ISEPS students have a high physical activity level, an unbalanced food intake, and normal nutritional status.

Interactive communication in the process of physical education: are social media contributing to the improvement of physical training performance.

The development of modern technologies and the use of social networks create an environment for the exchange of information, interactive communication, learning, and optimization of various processes. The study describes the results of the effectiveness of using various social media tools to increase the level of physical activity in people of different ages (12–35 years old). Effective tools for increasing the level of physical activity that can be used on social media have been considered. A survey created in Google forms was conducted to select research participants and group them; the pedagogical experiment is the introduction of social media tools to encourage users to do sports. The experiment involved 148 people of different age groups: adolescents, students, adults. After the experiment with the experimental group, there were 59.20% of participants with an average level of physical activity and 22.37% of participants with a high level of physical activity; in the control group, 31.58% of participants had a low level of physical activity, 48.70%—average, 10.53%—high. Most participants of all ages (88.16%) refrained from posting videos of their achievements on social media, while nine participants (5 pupils and 4 students) posted their achievements in the form of short video exercises or screenshots, and reports of exercises in mobile applications in their groups. The research results are applicable to various social groups and can be used to create private groups on social media to encourage physical activity. The data obtained can be used for further development of specialized training programs using digital technology and social networks.

Editors' Note: Long-term Effect of Regular Physical Activity and Exercise Habits in Patients With Early Parkinson Disease

In “Long-term effect of regular physical activity and exercise habits in patients with early Parkinson disease,” Tsukita et al. reported that average regular physical activity levels over time were associated with slower deterioration of gait stability, activities of daily living, and processing speed in patients with Parkinson disease (PD). Darweesh et al. contextualized these findings by noting they are consistent with the results of other studies, suggesting that regular exercise may slow progression of PD. They further proposed that vigorous exercise may reduce the risk of PD, implying that the findings of Tsukita et al. may also be attributed to reverse causality. Tsukita et al. agreed that reverse causality is feasible, although other data suggest that exercise may change the brain, modifying the course of PD. However, Gupta questioned the pathophysiologic mechanism by which exercise changes the brain and affects disease progression in PD, commenting that perhaps motivation to exercise may be relevant to disease progression in PD. In light of these comments, Tsukita et al. reinforced the need for the following types of future research: (1) international, multicenter randomized controlled trials on the effect of exercise on disease progression (for patients with PD) and development of clinical symptoms of PD (for patients with prodromal PD) which include neuroimaging; (2) evaluation of the motivation for patients with PD to exercise; and (3) animal studies on the effect of exercise on the brain, which include neuropathology assessment of α-synuclein. In “Long-term effect of regular physical activity and exercise habits in patients with early Parkinson disease,” Tsukita et al. reported that average regular physical activity levels over time were associated with slower deterioration of gait stability, activities of daily living, and processing speed in patients with Parkinson disease (PD). Darweesh et al. contextualized these findings by noting they are consistent with the results of other studies, suggesting that regular exercise may slow progression of PD. They further proposed that vigorous exercise may reduce the risk of PD, implying that the findings of Tsukita et al. may also be attributed to reverse causality. Tsukita et al. agreed that reverse causality is feasible, although other data suggest that exercise may change the brain, modifying the course of PD. However, Gupta questioned the pathophysiologic mechanism by which exercise changes the brain and affects disease progression in PD, commenting that perhaps motivation to exercise may be relevant to disease progression in PD. In light of these comments, Tsukita et al. reinforced the need for the following types of future research: (1) international, multicenter randomized controlled trials on the effect of exercise on disease progression (for patients with PD) and development of clinical symptoms of PD (for patients with prodromal PD) which include neuroimaging; (2) evaluation of the motivation for patients with PD to exercise; and (3) animal studies on the effect of exercise on the brain, which include neuropathology assessment of α-synuclein.

Preoperative Physical Activity Level Measurement by Accelerometer for Predicting Post-Hepatectomy Complications: A Prospective Observational Study

Introduction: Recently, accelerometers have received much attention around the world. This study examined whether the preoperative physical activity level measured by an accelerometer could be a useful predictor of post-hepatectomy complications. Methods: Between December 2016 and December 2020, the physical activity levels of 185 patients were measured using an accelerometer 3 days before hepatectomy and from postoperative day 1 to 7. The patients without postoperative complications (n = 153) and those with postoperative complications (n = 32) were compared using either the χ² test or Fisher’s exact test for nominal variables; continuous variables were analyzed using either Student’s t test or Mann-Whitney U test. Differences were considered statistically significant when the p value was <0.05. Risk factors for postoperative complications following hepatectomy were also investigated. Results: The number of patients with an anatomical resection was significantly higher in patients with postoperative complications (p = 0.001). Furthermore, laparoscopic hepatectomy was performed in 65.4% of patients without postoperative complications and in 25.0% of those with postoperative complications; the difference was statistically significant (p < 0.001). The average preoperative physical activity level was 150.6 kcal/day in patients without postoperative complications and 84.5 kcal/day in those with postoperative complications (p = 0.001). Multivariate analysis identified blood loss, operative time, and preoperative physical activity level as independent risk factors for postoperative complications. Discussion/Conclusion: Patients with lower preoperative physical activity levels are at a high risk of developing postoperative complications after hepatectomy. Hence, preoperative physical activity level measurement may be useful in predicting post-hepatectomy complications.

Low- and High-Intensity Physical Activity Among People with HIV: Multilevel Modeling Analysis Using Sensor- and Survey-Based Predictors.

BackgroundHigh-intensity physical activity improves the health of people with HIV. Even when people have good intentions to engage in physical activity, they often find it difficult to maintain physical activity behavior in the long term. Two Minds Theory is a neurocognitive model that explains gaps between people’s intentions and behaviors based on the operations of 2 independent mental systems. This model predicts that everyday experiences will affect physical activity and that factors outside people’s awareness, such as sleep and stress, can have particularly strong effects on physical activity behaviors.ObjectiveWe designed this study to test the effects of daily experiences on physical activity among people with HIV, including measures of people’s conscious experiences using daily electronic surveys and measures of nonconscious influences using sensor devices.MethodsIn this study, 55 people with HIV wore a Fitbit Alta for 30 days to monitor their physical activity, sleep, and heart rate variability (HRV) as a physiological indicator of stress. Participants also used their smartphones to complete daily electronic surveys for the same 30 days about fatigue, self-efficacy, mood, stress, coping, motivation, and barriers to self-care. Time-lagged, within-person, multilevel models were used to identify the best prospective predictors of physical activity, considering the daily survey responses of people with HIV and sensor data as predictors of their physical activity the following day. We also tested baseline surveys as predictors of physical activity for comparison with daily variables.ResultsDifferent people had different average levels of physical activity; however, physical activity also varied substantially from day to day, and daily measures were more predictive than baseline surveys. This suggests a chance to intervene based on day-to-day variations in physical activity. High-intensity physical activity was more likely when people with HIV reported less subjective fatigue on the prior day (r=−0.48) but was unrelated to actual sleep based on objective sensor data. High-intensity physical activity was also predicted by higher HRV (r=0.56), indicating less stress, lower HIV-related stigma (r=−0.21), fewer barriers to self-care (r=−0.34), and less approach coping (r=−0.34). Similar variables predicted lower-level physical activity measured based on the number of steps per day of people with HIV.ConclusionsSome predictors of physical activity, such as HRV, were only apparent based on sensor data, whereas others, such as fatigue, could be measured via self-report. Findings about coping were unexpected; however, other findings were in line with the literature. This study extends our prior knowledge on physical activity by demonstrating a prospective effect of everyday experiences on physical activity behavior, which is in line with the predictions of Two Minds Theory. Clinicians can support the physical activity of people with HIV by helping their patients reduce their daily stress, fatigue, and barriers to self-care.

The correlation of physical activity and sedentary leisure time with low muscle mass, strength, and quality in Chinese adults

Objective: To explore the relationship of physical activity and sedentary leisure time with muscle mass, strength, and quality in Chinese adults. Methods: Based on the second resurvey of China Kadoorie Biobank (CKB) in 2013-2014, logistic regression models were used to analyze the correlation of physical activity and sedentary leisure time with low muscle mass, grip strength, and muscle quality. Results: A total of 24 245 participants were included in the analysis. The average daily physical activity level was (18.3±13.8) MET-h/d, and the sedentary leisure time was (4.4±1.9) hours. We took the lowest physical activity quartile as the reference and found that the participants' physical activity was negatively correlated to low muscle mass, strength, and quality. The ORs (95%CIs) of low appendicular skeletal muscle mass index (ASMI), low total skeletal muscle mass index (TSMI), low grip strength and low arm muscle quality (AMQ) were 0.68 (0.60-0.77), 0.66 (0.58-0.75), 0.82 (0.72-0.94) and 0.84 (0.74-0.95), respectively. The subtypes of physical activity, including those related to work, transportation, housework, and leisure, also showed negative correlations with low muscle mass, strength, and quality to varying degrees. Compared with participants with the shortest sedentary leisure time, those who had the longest were more likely to have low TSMI (OR=1.13, 95%CI: 0.99-1.30). Conclusions: Physical activity was negatively correlated with a lower risk of low muscle mass and strength, while longer sedentary leisure time positively correlated with low muscle mass.