Crossword Puzzles and Knowledge Retention.

Students perceive crossword puzzles as enjoyable. In addition to students' perceptions, crossword puzzles actually improve knowledge retention. However, crossword puzzles increased exam scores for some students but not others. Recommendations have been made for students to create puzzles for their classmates to complete with the rationale that students are encouraged to research and understand the material in order to write meaningful clues for the puzzle. While students enjoy creating their own crossword puzzles, the association between students creating crossword puzzles and knowledge retention is unknown. The purpose of this project was to determine if creating crossword puzzles and completing peers' crossword puzzles were associated with improved knowledge retention indicated by higher scores on quizzes. Students in a research course from two institutions across three semesters had the option each week to upload a blank puzzle they created prior to completing each other's puzzles and taking a quiz. Quiz scores were compared between those who did versus did not create their own puzzles and complete their peers' puzzles. Results varied by institution and programs, as well as the same program within the same institution but different semesters. Results highlight the importance of moving beyond student perceptions and towards assessing knowledge retention while taking into consideration institution, program, and semester.

Dispersion of daily physical activity behaviors in school-age children: A novel approach to measure patterns of physical activity.

PURPOSE: The objectives of this paper are (1) to examine patterns of physical activity (PA) and sedentary behavior; (2) to describe development of a method to quantify movement dispersion; and (3) to determine the relationship between variables of movement (i.e., volume, intensity, and dispersion), volume of sedentary behavior, and estimated cardiorespiratory capacity in school-aged children. DESIGN AND METHODS: A secondary analysis of an existing data set with raw accelerometer data identified PA patterns of movement dispersion in school-aged children. Bar graphs visually depicted each participant's daily vector magnitude counts. The research team developed a dispersion variable-movement dispersion-and formula to provide a new quantification of daily PA patterns. Total movement dispersion represents both intensity and distribution of movement, whereas pure movement dispersion refers to the distribution of movement during the wear time, independent of intensity. Kendall's tau examined the relationship between several variables: body mass index percentile, average minutes of sedentary behavior, average minutes of light PA, average minutes of moderate-vigorous PA (MVPA), derived VO2 max, total movement dispersion, and pure movement dispersion. RESULTS: Three participants' activity graphs were presented as examples: (1) active, (2) inactive, and (3) mixed. The more active participant had the highest values for pure and total movement dispersion. The inactive participant had much lower pure and total movement dispersion values compared to the active participant. The mixed participant had high average minutes of MVPA yet lower pure and total movement dispersion values. Total movement dispersion had a significant correlation with average minutes of light PA (r = .406, p = .016) and average minutes of MVPA (r = .686, p < .001). Pure movement dispersion was significantly correlated with average minutes of light PA (r = .448, p = .008) and average minutes of MVPA (r = .599, p < .001). Average minutes of sedentary behavior (SB) were not significantly correlated with total (r = .041, p = .806) or pure movement dispersion (r = .165, p = .326). PRACTICE IMPLICATIONS: Movement dispersion may provide another tool to advance knowledge of PA, potentially leading to improved health outcomes. Raw accelerometer data, such as that gathered at the elementary school in this study, offer opportunities to identify school-aged children at risk for obesity, SB, and lack of PA.

Transportation Physical Activity Earlier in Life and Areas of the Brain related to Dementia Later in Life.

INTRODUCTION: Efforts to preserve brain function may be most effective when administered before there are changes in the brain, which may occur decades before the onset of Alzheimer's disease symptoms. White matter hyperintensities (WMH), a cardiovascular disease biomarker, are areas of hyperintense signals scattered in the white matter of the brain evident on magnetic resonance images. WMH increase with age and are associated with a higher risk of dementia. The purpose of this study was to determine if there was an association between different domains and intensities of physical activity earlier in life and lower risk of dementia later in life as indicated by less WMH. METHODS: In this cross-sectional study, face-to-face interviews were conducted with the Lifetime Total Physical Activity Questionnaire. The metabolic equivalent of task (MET) hours/week/year of moderate (3.0-5.9 METs) and vigorous-intensity (≥6 METs) occupation, transportation, household and leisure-time physical activity was obtained across school-age (6-11), adolescence (12-18), young (19-39) and middle adulthood (40-64). WMH were calculated as the percent of intracranial volume in cognitively unimpaired middle (age 40-64) and older adults (age 65+). Simultaneous multiple linear regression determined associations between moderate and vigorous-intensity occupation, transportation, household and leisure-time physical activity across school-age, adolescence, young and middle adulthood with WMH. RESULTS: Greater moderate-intensity transportation physical activity during young (b= -.09, p=.008) and middle adulthood (b= -.14, p=.013) was associated with lower WMH in middle and older adulthood, explaining 28% (p=.003) to 29% (p=.002) of the variance in WMH (n=54). CONCLUSIONS: Changes to the physical environment that encourage walking, running or biking, such as sidewalks and bike paths, may be strategies to mitigate the age-related increases in WMH, areas of the brain associated with higher risk of dementia.

Non-pharmacological strategies to obtain usable magnetic resonance images in non-sedated infants: Systematic review and meta-analysis.

BACKGROUND: Although the use of sedation is commonly practiced to keep infants still while receiving magnetic resonance imaging, non-pharmacological strategies are a potential alternative. OBJECTIVES: The purpose of this study was to determine the success rate of obtaining usable magnetic resonance images in infants with the sole use of non-pharmacological strategies. DESIGN: Systematic literature review and meta-analysis SETTING: A search was conducted in PubMed, CINAHL and Cochrane Library. PARTICIPANTS: Human infants from birth to 24 months of age who did not receive any sedation or anesthesia during magnetic resonance imaging METHOD: Articles that reported the success rate of obtaining usable images were included. RESULTS: Of the 521 non-duplicate articles found, 58 articles were included in the systematic review with sample sizes ranging from 2-457, an average success rate of 87.8%, and an average scan time of 30 min. The most common non-pharmacological technique included feeding and swaddling infants before imaging to encourage infants to sleep during the scan. Meta-analysis performed on 53 articles comprising 3,410 infants found a success rate of 87%, but significant heterogeneity was found (I2 = 98.30%). It was more difficult to obtain usable images solely with non-pharmacological techniques if infants were critically ill or a structural magnetic resonance imaging of the brain was required. CONCLUSION: Non-pharmacological techniques are effective for obtaining usable magnetic resonance imaging scans in most but not all infants. Tweetable abstract: Non-pharmacological techniques are effective for obtaining usable magnetic resonance imaging scans in most infants.

Cumulative Quizzes in a Nursing Research Course for Nursing Doctoral Students.

BACKGROUND: The purpose of this quality improvement project was to examine the association between regular cumulative quizzes and knowledge retention in nursing doctorate students. METHOD: Sixteen students in a large midwestern university enrolled in a hybrid nursing research course were assessed with weekly online cumulative quizzes. RESULTS: The mean score of the cumulative weekly quizzes was 94% (SD = 3%). The mean score on the cumulative final was 97% (SD = 3%). Fifteen students who completed an average of 12 of 14 (86%) cumulative weekly quizzes as scheduled passed the course. CONCLUSION: The cumulative final scores were higher than the cumulative weekly quizzes. Completing more of the cumulative weekly quizzes as scheduled was associated with higher cumulative final scores and passing the course, suggesting improved knowledge retention and ability to use that knowledge for other assignments throughout the course. [J Nurs Educ. 2019;58(4):243-246.].

Lifetime Physical Activity and White Matter Hyperintensities in Cognitively Intact Adults.

BACKGROUND: White matter hyperintensities (WMHs) observed on magnetic resonance images are associated with depression and increase the risk of stroke, dementia, and death. The association between physical activity and WMHs has been inconsistently reported in the literature, perhaps because studies did not account for a lifetime of physical activity or depression. OBJECTIVES: The aim of this study was to determine the extent to which a lifetime of leisure-time physical activity is associated with less WMHs while accounting for depression. METHODS: Face-to-face interviews were conducted with the Lifetime Total Physical Activity Questionnaire, where the metabolic equivalent of task hours per week per year was calculated. Cognitively intact participants also underwent magnetic resonance imaging, where WMHs as a percentage of intracranial volume was obtained. Hierarchical multiple linear regression was performed to compare WMHs in a more active group with a group with no psychiatric history (n = 20, mean age = 62.2 years), with a less active group with no psychiatric history (n = 13, mean age = 64.0 years), and a less active group with history of late-onset depression (n = 14, mean age = 62.8 years). RESULTS: There was not a statistically significant difference in WMHlg10 between the more and less active groups without a psychiatric history (b = .09, p > .05) or between the more active group without a psychiatric history and the less active group with a history of depression (b = .01, p > .05). The model was predictive of WMHlg10, explaining an adjusted 15% of the variance in WMHs (p = .041). DISCUSSION: A lifetime of leisure-time physical activity was not associated with WMHs when accounting for depression.

Predictors of Mindfulness Meditation and Exercise Practice, from MEPARI-2, a randomized controlled trial.

OBJECTIVES: Health-supporting behaviors can be challenging to initiate and maintain. Data from the MEPARI-2 randomized trial were used to assess predictors of sustained exercise and meditation practice. METHODS: Adults aged 30 to 69 years not exercising regularly and without prior meditation training were randomized to 8-week trainings in mindfulness meditation, moderate intensity exercise, or observational control, and monitored for 8 months. Exercise participants reported day-to-day minutes of moderate and vigorous activity; mindfulness meditation participants reported minutes of informal and formal practice. Demographic characteristics and psychosocial factors were assessed as predictors of practice. Growth mixture modeling was used to identify higher and lower practice subgroups. RESULTS: 413 participants (75.8% female; mean (SD) age 49.7 (11.6) years) were randomized to exercise (137), mindfulness meditation (138), or control (138), with 390 (95%) completing the study. Seventy-nine percent of exercisers and 62% of meditators reported ≥150 minutes/week practice for at least half of the 37 weeks monitored. Self-reported minutes of mindfulness meditation and/or exercise practice were significantly (p<0.01) predicted by baseline levels of: general mental health, self-efficacy, perceived stress, depressive symptoms, openness, neuroticism, physical activity, smoking status, and number of social contacts. Growth mixture modeling identified subsets of people with moderate (100-200 min/week) and high (300-450 min/week) levels of self-reported practice for both mindfulness meditation (62% moderate; 38% high) and exercise (71% moderate; 29% high). CONCLUSIONS: In this sample, participants randomized to behavioral trainings reported high levels of practice sustained over 37 weeks. Baseline psychosocial measures predicted practice levels in expected directions.

Benefits of 8-wk Mindfulness-based Stress Reduction or Aerobic Training on Seasonal Declines in Physical Activity.

Mindfulness-based stress reduction (MBSR) and aerobic exercise training (AET) programs improve health and well-being. Exercise participation has been related to mindfulness and may be altered by MBSR training. PURPOSE: This study aimed to compare 8 wk of MBSR, AET, and no-treatment control during the fall season on objectively measured physical activity in healthy adults. METHODS: Participants (n = 66) wore an ActiGraph GT3X+ accelerometer for 7 d prerandomization and after 8 wk MBSR or AET interventions, or neither (control). Mean daily minutes (min) of moderate-to-vigorous physical activities (MVPA) were calculated along with weekly time spent in bouts of MVPA ≥10 min (MVPABouts) to assess physical activity sufficient to meet national guidelines. Groups were compared on pairwise changes in outcomes across time. Effect sizes were calculated using Cohen's d. RESULTS: Sufficient data (≥3 weekdays, ≥1 weekend day, and ≥10 h·d) were obtained from 49 participants (18 MBSR, 14 AET, and 17 control). Daily MVPA decreased in all groups from prerandomization to postintervention (August to November); control decreased 17.9 ± 25.7 min·d, MBSR decreased 5.7 ± 7.5 min·d, and AET decreased 7.4 ± 14.3 min·d (mean ± SD), without significant differences among the groups (all P > 0.05). MVPABouts decreased 77.3 ± 106.6 min·wk in control and 15.5 ± 37.0 min·wk in MBSR (between-group difference: P = 0.08; d = 0.86), whereas it increased by 5.7 ± 64.1 min·wk in AET (compared with control: P = 0.029; d = 0.97; compared with MBSR; P = 0.564; d = 0.29). CONCLUSION: Data from participants in a randomized controlled trial showed that although AET increases MVPA bouts compared with no treatment, MBSR training may also mitigate the influence of shorter day length and cooler weather on participation in physical activities. Future research is needed to determine how MBSR affects exercise to inform interventions. Interventions combining MBSR and exercise may be particularly successful at increasing physical activity participation.

Meditation or exercise for preventing acute respiratory infection (MEPARI-2): A randomized controlled trial.

BACKGROUND: Practice of meditation or exercise may enhance health to protect against acute infectious illness. OBJECTIVE: To assess preventive effects of meditation and exercise on acute respiratory infection (ARI) illness. DESIGN: Randomized controlled prevention trial with three parallel groups. SETTING: Madison, Wisconsin, USA. PARTICIPANTS: Community-recruited adults who did not regularly exercise or meditate. METHODS: 1) 8-week behavioral training in mindfulness-based stress reduction (MBSR); 2) matched 8-week training in moderate intensity sustained exercise (EX); or 3) observational waitlist control. Training classes occurred in September and October, with weekly ARI surveillance through May. Incidence, duration, and area-under-curve ARI global severity were measured using daily reports on the WURSS-24 during ARI illness. Viruses were identified multiplex PCR. Absenteeism, health care utilization, and psychosocial health self-report assessments were also employed. RESULTS: Of 413 participants randomized, 390 completed the trial. In the MBSR group, 74 experienced 112 ARI episodes with 1045 days of ARI illness. Among exercisers, 84 had 120 episodes totaling 1010 illness days. Eighty-two of the controls had 134 episodes with 1210 days of ARI illness. Mean global severity was 315 for MBSR (95% confidence interval 244, 386), 256 (193, 318) for EX, and 336 (268, 403) for controls. A prespecified multivariate zero-inflated regression model suggested reduced incidence for MBSR (p = 0.036) and lower global severity for EX (p = 0.042), compared to control, not quite attaining the p<0.025 prespecified cut-off for null hypothesis rejection. There were 73 ARI-related missed-work days and 22 ARI-related health care visits in the MBSR group, 82 days and 21 visits for exercisers, and 105 days and 24 visits among controls. Viruses were identified in 63 ARI episodes in the MBSR group, compared to 64 for EX and 72 for control. Statistically significant (p<0.05) improvements in general mental health, self-efficacy, mindful attention, sleep quality, perceived stress, and depressive symptoms were observed in the MBSR and/or EX groups, compared to control. CONCLUSIONS: Training in mindfulness meditation or exercise may help protect against ARI illness. LIMITATIONS: This trial was likely underpowered. TRIAL REGISTRATION: Clinicaltrials.gov NCT01654289.

Gardening/Yard Work and Depressive Symptoms in African Americans.

BACKGROUND: The purpose of this study was to examine the frequency of gardening/yard work in relation to depressive symptoms in African-Americans while controlling for biological and social factors. METHODS: A secondary analysis was performed on the National Survey of American Life (n=2,903) using logistic regression for complex samples. Gardening/Yard work was measured by self-reported frequency. Depressive symptoms were measured with the Center for Epidemiologic Studies Depression scale. RESULTS: Biological and social factors, not gardening/yard work, were associated with depressive symptoms. CONCLUSIONS: Biological and social factors may need to be addressed before the association between gardening/yard work and depressive symptoms can be determined.

Physical Activity and White Matter Hyperintensities: A Systematic Review of Quantitative Studies.

OBJECTIVE: White matter hyperintensities (WMH) are markers of brain white matter injury seen on magnetic resonance imaging. WMH increase with age and are associated with neuropsychiatric disorders. WMH progression can be slowed by controlling vascular risk factors in individuals with advanced disease. Since physical activity can decrease vascular risk factors, physical activity may slow the progression of WMH in individuals without advanced disease, thereby preventing neuropsychiatric disorders. The purpose of this systematic review was to examine the association between physical activity and WMH in individuals without advanced disease. METHODS: Articles published in English through March 18, 2014 were searched using PubMed, Web of Science, Cochrane Library and EBSCOhost. RESULTS: Six studies found that more physical activity was associated with less WMH, while 6 found no association. Physical activity is associated with less WMH in individuals without advanced disease when studies are longitudinal or take into consideration physical activity across the lifespan, have a younger sample of older adults, measure different types of physical activity beyond leisure or objectively measure fitness via V02max, measure WMH manually or semi-automatically, and control for risk factors associated with WMH. CONCLUSION: More physical activity was associated with less white matter hyperintensities in individuals without advanced disease.

Depressive Symptoms and Walking in African-Americans.

OBJECTIVE: Although increased frequency of physical activity is associated with fewer depressive symptoms in African-Americans, most studies do not focus on a specific type of activity. Identifying the activity can provide helpful information for designing interventions that focus on depressive symptoms. The objective of this study was to examine the odds of depressive symptoms in relation to walking in African-Americans. DESIGN AND SAMPLE: A secondary analysis was performed on the National Survey of American Life. The sample was made up of community-dwelling African-American women (n = 1,903) and men (n = 1,075) who did not meet the DSM-IV-TR criteria for depression. MEASURES: Walking was measured by self-reported frequency (i.e., never, rarely, sometimes, often). Depressive symptoms were measured with the Center for Epidemiologic Studies Depression scale. Logistic regression for complex samples was used to examine the odds of depressive symptoms in relation to walking. RESULTS: Women who reported often walking had lower odds for depressive symptoms than women who reported never walking (OR = 0.56, 95% CI = 0.38-0.82). Walking frequency was not related to depressive symptoms in men. CONCLUSIONS: Walking frequency is a modifiable risk factor for elevated depressive symptoms in African-American women.

Disability and comorbidity among major depressive disorder and double depression in African-American adults.

BACKGROUND: Few studies have examined differences in disability and comorbity among major depressive disorder (MDD), dysthymia, and double depression in African-Americans (AA). METHODS: A secondary analysis was performed on AA in the National Survey of American Life. Interviews occurred 2001-2003. A four stage national area probability sampling was performed. DSM-IV-TR diagnoses were obtained with a modified version of the World Health Organization's expanded version of the Composite International Diagnostic Interview. Disability was measured by interview with the World Health Organization's Disability Assessment Schedule II. RESULTS: Compared to non-depressed AA, AA endorsing MDD (t=19.0, p=0.0001) and double depression (t=18.7, p=0.0001) reported more global disability; AA endorsing MDD (t=8.5, p=0.0063) reported more disability in the getting around domain; AA endorsing MDD (t=19.1, p=0.0001) and double depression (t=12.1, p=0.0014) reported more disability in the life activities domain. AA who endorsed double depression reported similar disability and comorbidities with AA who endorsed MDD. Few AA endorsed dysthymia. LIMITATIONS: This was a cross-sectional study subject to recall bias. The NSAL did not measure minor depression. CONCLUSIONS: The current study supports the idea of deleting distinct chronic subtypes of depression and consolidating them into a single category termed chronic depression.

Leisure-time physical activity in relation to depressive symptoms in African-Americans: results from the National Survey of American Life.

OBJECTIVE: To examine the frequency of leisure-time physical activity (LTPA) in relation to depressive symptoms in a nationally representative sample of African American (AA) women and AA men with guidance by Stokols' Social Ecological Framework. METHOD: A secondary analysis of AA women (n=1811) and AA men (n=1038) was performed on the National Survey of American Life, where a four stage national area probability sampling was conducted. Interviews were conducted 2001-2003. Clinically depressed AA were excluded from the current study. LTPA was measured by self-report frequency (never, rarely, sometimes, often) of participation in sports/exercise. Depressive symptoms were measured with the Center for Epidemiologic Studies Depression scale. Logistic regression for complex samples was used to examine the relationship between LTPA and depressive symptoms, adjusting for biopsychobehavioral and sociophysical environmental factors. RESULTS: Compared with AA women and AA men who reported never participating in LTPA, the multivariate OR for depressive symptoms in AA women and AA men who reported participating in LTPA often was 0.42 (95% CI=0.24-0.72) and 0.41 (95% CI=0.25-0.69) respectively. CONCLUSION: Increased frequency of LTPA was associated with fewer depressive symptoms in a nationally representative sample of non-clinically depressed AAs.

A systematic review of strategies that increase the recruitment and retention of African American adults in genetic and genomic studies.

BACKGROUND: The National Institutes of Health mandates the inclusion of ancestrally diverse populations into federally funded biomedical and clinical trials research. However, low participation of ethnic minorities in genetics-genomics research continues to be one of the most difficult aspects of conducting human subjects research. OBJECTIVE: This systematic review was conducted to document effective recruitment strategies that increase participation in genetics-genomics studies. METHODS: Extensive literature search strategies were employed to locate and appraise relevant literature reporting original data in which strategies to recruit African American adults into genetics-genomics research studies had been evaluated. RESULTS: Six studies published up to July, 2011 were included. Informal recruitment strategies for initial contact appeared to have a more positive impact on increasing recruitment and participation numbers than formal mailings of letters and postcards. Another key stratagem identified was participant-recruiter like-ancestry. Other methods such as monetary incentives and support of the research project by community leaders were not as effective. CONCLUSIONS: Some strategies bolstered recruitment rates while others did not. More research is needed to determine the efficacy of recruitment strategies with African Americans.

Neighborhood factors relevant for walking in older, urban, African American adults.

Focus-group and photo-voice methodology were used to identify the salient factors of the neighborhood environment that encourage or discourage walking in older, urban African Americans. Twenty-one male (n = 2) and female (n = 19) African Americans age 60 years and older (M = 70 +/- 8.7, range = 61-85) were recruited from a large urban senior center. Photographs taken by the participants were used to facilitate focus-group discussions. The most salient factors that emerged included the presence of other people, neighborhood surroundings, and safety from crime, followed by sidewalk and traffic conditions, animals, public walking tracks and trails, and weather. Future walking interventions for older African Americans should include factors that encourage walking, such as the presence of other friendly or active people, attractive or peaceful surroundings, and a sense of safety from crime.

Physical Activity Effects on Depressive Symptoms in Black Adults.

OBJECTIVES: Randomized trials found physical activity (PA) effective in decreasing depressive symptoms. Few studies included Black participants. The purpose of this systematic literature review was to determine the effects of PA on depressive symptoms in Black adults. METHODS: Articles were abstracted by conducting a computer and hand search of eligible studies. RESULTS: Eight of 13 studies found a significant inverse relationship between PA and depressive symptoms in Black adults. Sources for the heterogeneity were explored. CONCLUSION: Future studies should include representative samples of Black adults, incorporate a theory which considers multiple levels of influence, account for genetic factors in the etiology of depressive symptoms, include individuals diagnosed with depression and with health conditions which may increase the risk of depressive symptoms, account for intra-group ethnic heterogeneity, measure and differentiate between social support and social network, consider aspects of the physical environment and use standardized measurements of PA.