Gain-of-function and loss-of-function variants in GRIA3 lead to distinct neurodevelopmental phenotypes.

AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid) receptors (AMPARs) mediate fast excitatory neurotransmission in the brain. AMPARs form by homo- or heteromeric assembly of subunits encoded by the GRIA1-GRIA4 genes, of which only GRIA3 is X-chromosomal. Increasing numbers of GRIA3 missense variants are reported in patients with neurodevelopmental disorders (NDD), but only a few have been examined functionally. Here, we evaluated the impact on AMPAR function of one frameshift and 43 rare missense GRIA3 variants identified in patients with NDD by electrophysiological assays. Thirty-one variants alter receptor function and show loss-of-function (LoF) or gain-of-function (GoF) properties, whereas 13 appeared neutral. We collected detailed clinical data from 25 patients (from 23 families) harbouring 17 of these variants. All patients had global developmental impairment, mostly moderate (9/25) or severe (12/25). Twelve patients had seizures, including focal motor (6/12), unknown onset motor (4/12), focal impaired awareness (1/12), (atypical) absence (2/12), myoclonic (5/12), and generalized tonic-clonic (1/12) or atonic (1/12) seizures. The epilepsy syndrome was classified as developmental and epileptic encephalopathy in eight patients, developmental encephalopathy without seizures in 13 patients, and intellectual disability with epilepsy in four patients. Limb muscular hypotonia was reported in 13/25, and hypertonia in 10/25. Movement disorders were reported in 14/25, with hyperekplexia or non-epileptic erratic myoclonus being the most prevalent feature (8/25). Correlating receptor functional phenotype with clinical features revealed clinical features for GRIA3-associated NDDs and distinct NDD phenotypes for LoF and GoF variants. GoF variants were associated with more severe outcomes: patients were younger at the time of seizure onset (median age one month), hypertonic, and more often had movement disorders, including hyperekplexia. Patients with LoF variants were older at the time of seizure onset (median age 16 months), hypotonic, and had sleeping disturbances. LoF and GoF variants were disease-causing in both sexes but affected males often carried de novo or hemizygous LoF variants inherited from healthy mothers, whereas all but one affected females had de novo heterozygous GoF variants.

Stage-specific overcompensation, the hydra effect, and the failure to eradicate an invasive predator.

As biological invasions continue to increase globally, eradication programs have been undertaken at significant cost, often without consideration of relevant ecological theory. Theoretical fisheries models have shown that harvest can actually increase the equilibrium size of a population, and uncontrolled studies and anecdotal reports have documented population increases in response to invasive species removal (akin to fisheries harvest). Both findings may be driven by high levels of juvenile survival associated with low adult abundance, often referred to as overcompensation. Here we show that in a coastal marine ecosystem, an eradication program resulted in stage-specific overcompensation and a 30-fold, single-year increase in the population of an introduced predator. Data collected concurrently from four adjacent regional bays without eradication efforts showed no similar population increase, indicating a local and not a regional increase. Specifically, the eradication program had inadvertently reduced the control of recruitment by adults via cannibalism, thereby facilitating the population explosion. Mesocosm experiments confirmed that adult cannibalism of recruits was size-dependent and could control recruitment. Genomic data show substantial isolation of this population and implicate internal population dynamics for the increase, rather than recruitment from other locations. More broadly, this controlled experimental demonstration of stage-specific overcompensation in an aquatic system provides an important cautionary message for eradication efforts of species with limited connectivity and similar life histories.

Recruitment Challenges of a Colorectal Cancer Screening Dissemination Study.

BACKGROUND: Dissemination strategies to reach underserved and minority populations to promote screening for colorectal cancer (CRC) are key to reducing disparities. We conducted a study to examine a tailored messaging approach to navigate individuals from communities (i.e., lower income, less access to care, and underscreened) to clinics to receive CRC screening. We encountered several political, demographic, and secular trend issues that required reconsideration and redesign of implementation strategies. OBJECTIVES: Through study implementation from 2012 to 2017, changes in medical reimbursement and immigration policies-at the state level and later at the national level-affected healthcare delivery systems that had initially committed to supporting the study and our recruitment methods. Although our selected zip codes and sites had previously yielded high rates of CRC screening nonadherence, within a few years, these sites showed substantially higher screening adherence rates-yielding limited numbers of eligible participants. In addition, state immigration policy trends created mistrust and fear, leading to lower participation rates than anticipated. This report documents and provides valuable insights on how we and the community network developed creative strategies to overcome these challenges. METHODS: New relationships with community partners were extended to tap advisory board input to meet the challenges. Criteria for clinic participation widened from originally selected Federally Qualified Health Centers (FQHCs) to various nonprofit, hybrid, and privately insured reimbursement types. Recruitment site options were creatively redefined to reach community participants where they live, work, and receive services. RESULTS: Strategies that engage community members in identifying alternative healthcare delivery structures and that link recruitment efforts to community-based service organizations were found to be critical to recapturing community trust in the face of unfavorable political environments. Widening the type of clinic partners from FQHCs to stand-alone nonprofits and private clinics and identifying unusual types of recruitment sites provided alternative solutions for successful study implementation. DISCUSSION: In prevention-based studies that face unplanned system and political barriers to recruitment, embedding the study in the community may aid in reestablishing trust levels to improve engagement and recruitment of clinic partners and eligible participants.

[Implementation of an EMG IPA in the emergency department]. / Implantation d'une IPA de l'EMG au service d'accueil des urgences.

An advanced practice nurse from the Bretonneau-Bichat (AP-HP) hospitals' mobile geriatric outpatient team works in the emergency department (SAU). Its mission is to facilitate the identification, evaluation and referral of frail elderly patients discharged home after a visit to the emergency department. Description of the implementation of this project, its progress, and one-year assessment.

Effects of a Community-to-Clinic Navigation Intervention on Colorectal Cancer Screening Among Underserved People.

BACKGROUND: Colorectal cancer screening remains suboptimal among poor and underserved people. PURPOSE: We tested the effectiveness of a community-to-clinic navigator intervention to guide multicultural, underinsured individuals into primary care clinics to complete colorectal cancer screening. METHODS: This two-phase behavioral intervention study was conducted in Phoenix, Arizona (2012-2018). Community sites were randomized to group education or group education plus tailored navigation to increase attendance at primary care clinics (Phase I). Individuals who completed a clinic appointment received the tailored navigation in person or via phone (Phase II). RESULTS: In Phase I (N = 345), 37.9% of the intervention group scheduled a clinic appointment versus 19.4% of the comparison group. In Phase II, 26.5% of the original intervention group were screened versus only 10.4% of the original comparison group. Those in the intervention group were 3.84 times more likely to be screened than were those in the comparison group (odds ratio = 3.84; 95% confidence interval = 1.81-6.92). CONCLUSIONS: Translation of an efficacious tailored navigation intervention for colorectal cancer screening to a community-to-clinic context is associated with significantly increased rates of colorectal cancer screening. Navigation assistance to address barriers to screening may serve as the most important component of any educational program to increase individual adherence to colorectal cancer screening.

Treatment Strategies in Octogenarians with Early-Stage, High-Risk Breast Cancer.

BACKGROUND: Octogenarians with early-stage breast cancer often have low-risk tumor biology. However, optimal treatment strategies for those with high-risk biology remain unclear. METHODS: We reviewed the records of women ages 80-89 years with biopsy-proven, Stage I-II invasive breast cancer who were referred for surgical evaluation from January 2001 through December 2010. High-risk was defined as human epidermal growth factor receptor-positive (HER2+), triple-negative (TN), or histologic grade 3 disease. RESULTS: Among 178 patients, 40 (22%) were high-risk: 12 were grade 1-2 (10 HER2 + , 2 TN); 28 were grade 3 (7 HER2+, 6 TN, 15 estrogen receptor-positive (ER+)/HER2-). The high-risk group had larger tumors and more often had ductal histology and lymphovascular invasion than the low-risk group and was more likely to undergo mastectomy (18 vs. 5%, p = 0.02), radiotherapy (55 vs. 36%, p = 0.03), and chemotherapy (10 vs. 0%, p = 0.002). Endocrine therapy use was similar among ER+ patients in both groups. The four patients in the high-risk group given chemotherapy were HER2+ and received trastuzumab-based regimens, without any reported toxicities. At median follow-up of 67 months, 10% of the high-risk group had a recurrence (3 distant-only, 1 simultaneous locoregional and distant in a patient treated with mastectomy without radiotherapy). CONCLUSIONS: Tailored locoregional and systemic therapy resulted in low incidence of failure in these octogenarians with high-risk cancers with low morbidity. Modern adjuvant therapies should be considered for elderly women with high-risk cancers in the absence of significant comorbidities.

Lysine-Specific Demethylase 1A (KDM1A/LSD1): Product Recognition and Kinetic Analysis of Full-Length Histones.

Lysine-specific demethylase 1A (KDM1A/LSD1) is a FAD-dependent enzyme that catalyzes the oxidative demethylation of histone H3K4me1/2 and H3K9me1/2 repressing and activating transcription, respectively. Although the active site is expanded compared to that of members of the greater amine oxidase superfamily, it is too sterically restricted to encompass the minimal 21-mer peptide substrate footprint. The remainder of the substrate/product is therefore expected to extend along the surface of KDM1A. We show that full-length histone H3, which lacks any posttranslational modifications, is a tight-binding, competitive inhibitor of KDM1A demethylation activity with a Ki of 18.9 ± 1.2 nM, a value that is approximately 100-fold higher than that of the 21-mer peptide product. The relative H3 affinity is independent of preincubation time, suggesting that H3 rapidly reaches equilibrium with KDM1A. Jump dilution experiments confirmed the increased binding affinity of full-length H3 was at least partially due to a slow off rate (koff) of 1.2 × 10(-3) s(-1), corresponding to a half-life (t1/2) of 9.63 min, and a residence time (τ) of 13.9 min. Independent affinity capture surface plasmon resonance experiments confirmed the tight-binding nature of the H3/KDM1A interaction, revealing a Kd of 9.02 ± 2.3 nM, a kon of (9.3 ± 1.5) × 10(4) M(-1) s(-1), and a koff of (8.4 ± 0.3) × 10(-4) s(-1). Additionally, no other core histones exhibited inhibition of KDM1A demethylation activity, which is consistent with H3 being the preferred histone substrate of KDM1A versus H2A, H2B, and H4. Together, these data suggest that KDM1A likely contains a histone H3 secondary specificity element on the enzyme surface that contributes significantly to its recognition of substrates and products.

Early-Stage Breast Cancer in the Octogenarian: Tumor Characteristics, Treatment Choices, and Clinical Outcomes.

BACKGROUND: Nodal staging with sentinel node biopsy (SLNB), post-lumpectomy radiotherapy (RT), and endocrine therapy (ET) for estrogen receptor-positive (ER+) tumors is valuable in the treatment of early-stage (stages 1 or 2) breast cancer but used less often for elderly women. METHODS: This retrospective study investigated women referred for surgical evaluation of biopsy-proven primary early-stage invasive breast cancer from January 2001 to December 2010. Clinicopathologic features, treatment course, and outcomes for women ages 80-89 years and 50-59 years were compared. RESULTS: The study identified 178 eligible women ages 80-89 years and 169 women ages 50-59 years. The elderly women more often had grade 1 or 2 disease (p = 0.003) and ER+ tumors (p = 0.007) and less frequently had undergone adjuvant therapies (all p ≤ 0.001). Lumpectomy was performed more commonly for the elderly (92 vs. 83 %, p = 0.02), and axillary surgery was less commonly performed (46 vs. 96 %; p < 0.001). Fewer elderly women had undergone post-lumpectomy RT (42 vs. 89 %; p < 0.001) and ET for ER+ tumors (72 vs. 95 %; p < 0.001). During the median follow-up period of 56 months for the 80- to 89-year old group and 98 months for the 50- to 59-year-old group, death from breast cancer was similar (4 vs. 5 %; p = 0.5). The two groups respectively experienced 7 versus 6 locoregional recurrences and 11 versus 13 distant recurrences. CONCLUSIONS: The octogenarians had disease survivorship similar to that of the younger women despite less frequent use of adjuvant therapies, likely reflecting lower-risk disease features. Whether increased use of axillary surgery, post-lumpectomy RT, and/or ET for ER+ tumors would further improve outcomes is an important area for further study, but treatment should not be deferred solely on the basis of age.

Cost-Effectiveness of Community-to-Clinic Tailored Navigation for Colorectal Cancer Screening in an Underserved Population: Economic Evaluation Alongside a Group-Randomized Trial.

PURPOSE: Although screening for colorectal cancer (CRC) lowers mortality and morbidity and is generally cost-effective, little is known about the cost-effectiveness of screening promotion. DESIGN: Cost-effectiveness analysis alongside a group-randomized trial. Setting: Multicultural, underinsured communities in the Phoenix, Arizona, area. SUBJECTS: English- or Spanish-speaking adults who were out of compliance for CRC screening guidelines. INTERVENTION: All participants received community-based group education (GE), and the intervention group also received tailored community-to-clinic navigation (GE+TN). MEASURES: Number of participants screened and costs of tailored navigation, clinic visits, and CRC screening tests. ANALYSIS: Incremental cost per additional person screened from the perspective of the healthcare system with bootstrapped confidence intervals. RESULTS: Community sites were recruited and randomized to GE (n = 120) and GE + TN (n = 119). Across these sites 1154 individuals were screened, 504 were eligible, and 345 attended the group education class (n = 134 GE; n = 211 GE + TN). Screening rates (26.5% GE + TN; 10.4% GE; 16.1% increase 95% CI: 7%, 23%) and costs per participant ($271 GE + TN; $167 GE; a net cost increase of $104 95% CI: $1, $189) were significantly higher in the intervention group. Incremental cost-effectiveness was $646 (95% CI: -$68, $953) per additional person screened. CONCLUSION: Depending on the value placed on an additional person screened, the addition of community-to-clinic tailored navigation to a community-based CRC screening promotion program may be highly cost-effective.

Randomized Controlled Trial of Storytelling vs Didactic Education Effects on Dietary Colorectal Cancer Risk Behaviors among Latinxs.

Dietary patterns associated with risk for colorectal cancer (CRC) may contribute to continuing health disparities in Latinx populations. Latinx from low-income communities, aged 25-65, were randomized to a 12-week storytelling-based intervention (ST) (n = 300) or didactic learning (DL)(n = 285) classes on cancer screening and dietary changes related to CRC risk facilitated by Latinx lay health workers (promotora/es de salud). Dietary intake was assessed pre-and post-intervention (24-hour dietary recall) with no significant differences found between ST and DL groups. Specific dietary changes in both groups included increases (p<.05) in dietary fiber (ST from 17.0 to 18.2; DL from 16.38 to 17.8 gms), calcium (ST from 715.7 to 781.9; DL 666.4 to 748.7 mgs), and vegetables (ST 2.5 to 2.8; DL 2.4 to 2.6 servings/day). Although between-intervention group effects were not significant, both culturally-adapted interventions were found to change a selection of key CRC-preventive dietary behaviors.

Startup and implementation costs of a colorectal cancer screening tailored navigation research study.

BACKGROUND: Colorectal cancer (CRC) is the third leading cause of cancer-related death in the United States. Despite improvements in screening, testing for CRC is underutilized in some populations, suggesting a need to identify efficient test promotion strategies. METHODS: Our intervention guided individuals from low-income, underserved communities into primary care clinics to receive CRC screening referrals. Community sites were randomized to education or education plus navigation. The Phase I community-to-clinic navigation outcome was clinic attendance; the Phase II clinic-to-screening navigation outcome was screening completion. We used micro-costing to determine costs necessary to replicate our project in a similar, non-research setting. RESULTS: Over the 4-year project, startup costs tended to decrease as implementation costs increased. The largest component of startup costs (32 % of total) was community site recruitment. Implementation costs per class attendee were higher in the navigation group ($1084) than control ($798). But costs per participant who made a clinic appointment ($3573 versus $6292) and per participant who completed screening ($4083 versus $7640) were lower in the navigation group. CONCLUSIONS: Our description of startup and implementation costs for this intervention provides decision makers with information needed to plan and budget for a similar project to guide individuals from community into clinics.

Inheritance of nesting behaviour across natural environmental variation in a turtle with temperature-dependent sex determination.

Nesting behaviour is critical for reproductive success in oviparous organisms with no parental care. In organisms where sex is determined by incubation temperature, nesting behaviour may be a prime target of selection in response to unbalanced sex ratios. To produce an evolutionary change in response to sex-ratio selection, components of nesting behaviour must be heritable. We estimated the field heritability of two key components of nesting behaviour in a population of painted turtles (Chrysemys picta) with temperature-dependent sex determination by applying the 'animal model' to a pedigree reconstructed from genotype data. We obtained estimates of low to non-detectable heritability using repeated records across all environments. We then determined environment-specific heritability by grouping records with similar temperatures for the winter preceding the nesting season, a variable known to be highly associated with our two traits of interest, nest vegetation cover and Julian date of nesting. The heritability estimates of nest vegetation cover and Julian date of nesting were qualitatively highest and significant, or nearly so, after hot winters. Additive genetic variance for these traits was not detectable after cold winters. Our analysis suggests that the potential for evolutionary change of nesting behaviour may be dependent on the thermal conditions of the preceding winter, a season that is predicted to be especially subject to climate change.

Ultrasound location of intrauterine devices placed at cesarean section over the first year postpartum.

OBJECTIVES: The primary objective was to measure IUD-fundus and IUD-myometrium distances by ultrasound of IUDs placed during cesarean section over the first year of use. The secondary objective was to determine if these distances are associated with risk of expulsion or removal for side effects. STUDY DESIGN: In this prospective observational study, we performed ultrasounds at six - ten weeks, three months and one year postpartum to measure the distance from the top of the device to the fundal serosa (IUD-fundus) and upper margin of the endometrial cavity (IUD-myometrium). We also assessed IUD expulsion or discontinuation for side effects at each visit. RESULTS: We enrolled 93 women who had copper (n = 77) or levonorgestrel (n = 16) IUDs placed at time of cesarean section. Two patients had complete expulsion, six had partial expulsion and nine requested removal for symptoms. Overall, median IUD-fundus measurements were 2.13 cm (IQR 1.87-2.55) at 6-10 weeks, 1.87 cm (IQR 1.53-2.23) at 3-months and 2.02 cm (IQR 1.67-2.40) at 1-year. Among copper IUD users, distances at six weeks and three months were similar in women who did or did not have expulsion or removal at one year however small numbers limit our ability to assess this relationship. CONCLUSION: We describe the location on ultrasound of IUDs placed at the time of Cesarean section over the first year. We found similar IUD locations at six weeks and three months for participants who did or did not experience expulsion or removal by one year. IMPLICATIONS: Position of intrauterine devices placed during cesarean section was similar for those who did or did not have expulsion or removal for symptoms in the first year after placement. These data may help in the design of future studies to determine if ultrasound measurement of IUDs predicts IUD complications.

Storytelling for promoting colorectal cancer screening among underserved Latina women: a randomized pilot study.

BACKGROUND: In a low socioeconomic-status population of Latina women, we evaluated the potential of storytelling (ST) as a culturally aligned narrative method to promote colorectal cancer (CRC) prevention and screening, compared to a risk tool (RT)-based intervention. METHODS: Seventy-eight women were randomized in this pilot study to one of two brief interventions to communicate CRC risk reduction options: ST or an RT. Measures of behavioral intentions relative to CRC prevention and screening were obtained following the intervention. RESULTS: Mean scores for intent to obtain and recommend endoscopy to others were significantly better for participants receiving ST than RT (P = .038 and P = .011, respectively). All participants expressed intent to increase fruit and vegetable consumption and physical activity in response to interventions. Post-intervention perceptions of cancer risk and fear of CRC were not significantly different for participants receiving ST compared with RT. Pre- to post-intervention perceptions of risk increased in ST and decreased in RT, while decreases in fear were similar across both intervention groups. CONCLUSIONS: Storytelling may be an effective approach for changing CRC risk-related behavioral intentions among Latinas. Mediating factors (such as perceived risk or fear) often used to predict behavior change may not adequately explain the potential persuasive mechanisms of storytelling.

Storytelling for promoting colorectal cancer prevention and early detection among Latinos.

OBJECTIVE: Health promotion efforts directed at Latinos may be more effective when culturally adapted methods are used. Our study was designed to test a novel communication modality for promoting colorectal cancer (CRC) prevention and screening messages among Latinos. METHODS: We compared a culturally aligned, brief storytelling educational intervention (ST) to a numeric risk tool intervention (NR) based on the Harvard Cancer Risk Index. Both interventions included risk factor information and recommendations for primary prevention and screening for CRC. Sixty-four Latinos (mean age 46.8, 86% female) were randomized and completed pre- and post-tests. RESULTS: Participants in ST indicated intent to add significantly more servings of vegetables (p=.030) and more minutes of exercise (p=.018) to daily routines than those in NR. Most respondents (ST and NR) reported intentions to recommend CRC screening to friends and relatives. CONCLUSIONS: These data provide support for storytelling's potential to promote health behavior change with cultural relevance for Latinos. PRACTICE IMPLICATIONS: Storytelling shows promise as an effective method for reaching one of the historically underserved ethnic groups with cancer prevention and screening information.

Randomized controlled dissemination study of community-to-clinic navigation to promote CRC screening: Study design and implications.

INTRODUCTION: Regular screening facilitates early diagnosis of colorectal cancer (CRC) and reduction of CRC morbidity and mortality. Screening rates for minorities and low-income populations remain suboptimal. Provider referral for CRC screening is one of the strongest predictors of adherence, but referrals are unlikely among those who have no clinic home (common among poor and minority populations). METHODS/STUDY DESIGN: This group randomized controlled study will test the effectiveness of an evidence based tailored messaging intervention in a community-to-clinic navigation context compared to no navigation. Multicultural, underinsured individuals from community sites will be randomized (by site) to receive CRC screening education only, or education plus navigation. In Phase I, those randomized to education plus navigation will be guided to make a clinic appointment to receive a provider referral for CRC screening. Patients attending clinic appointments will continue to receive navigation until screened (Phase II) regardless of initial arm assignment. We hypothesize that those receiving education plus navigation will be more likely to attend clinic appointments (H1) and show higher rates of screening (H2) compared to those receiving education only. Phase I group assignment will be used as a control variable in analysis of screening follow-through in Phase II. Costs per screening achieved will be evaluated for each condition and the RE-AIM framework will be used to examine dissemination results. CONCLUSION: The novelty of our study design is the translational dissemination model that will allow us to assess the real-world application of an efficacious intervention previously tested in a randomized controlled trial.

Randomized controlled trial of storytelling compared to a personal risk tool intervention on colorectal cancer screening in low-income patients.

PURPOSE: Screening rates for colorectal cancer (CRC) lag for low-income, minority populations, contributing to poorer survival rates. A model of storytelling as culture-centric health promotion was tested for promoting CRC screening. DESIGN: A two-group parallel randomized controlled trial. SETTING: Primary care, safety-net clinics. SUBJECTS: Low-income patients due for CRC screening, ages 50 to 75 years, speaking English or Spanish. INTERVENTION: Patients were exposed to either a video created from personal stories composited into a drama about "Papa" receiving CRC screening, or an instrument estimating level of personal cancer risk. Patients received a health care provider referral for CRC screening and were followed up for 3 months to document adherence. MEASURES: Behavioral factors related to the narrative model (identification and engagement) and theory of planned behavior. ANALYSIS: Main effects of the interventions on screening were tested, controlling for attrition factors, and demographic factor associations were assessed. Path analysis with model variables was used to test the direct effects and multiple mediator models. RESULTS: Main effects on CRC screening (roughly half stool-based tests, half colonoscopy) did not indicate significant differences (37% and 42% screened for storytelling and risk-based messages, respectively; n = 539; 33.6% male; 62% Hispanic). Factors positively associated with CRC screening included being female, Hispanic, married or living with a partner, speaking Spanish, having a primary care provider, lower income, and no health insurance. Engagement, working through positive attitudes toward the behavior, predicted CRC screening. CONCLUSION: A storytelling and a personalized risk-tool intervention achieved similar levels of screening among unscreened/underscreened, low-income patients. Factors usually associated with lower rates of screening (e.g., no insurance, being Hispanic) were related to more adherence. Both interventions' engagement factor facilitated positive attitudes about CRC screening associated with behavior change.

Self-reported physical activity patterns among low-income Latina women in Arizona.

BACKGROUND: Adherence to recommendations for physical activity (PA) among adults in the United States is reported as poor, particularly among low-income Latinos. In particular, Latina women are at increased risk for inactivity and chronic illness, but national health survey reports aggregate data across demographic strata, limiting descriptive information that could guide targeted PA promotion. The purpose of the study was to determine PA patterns among a low-income group of Latina women in the southwestern United States. METHODS: As part of a large community intervention trial to increase cancer prevention behaviors, PA data were collected from 1,006 Latina women using a modified version of the Arizona Activity Frequency Questionnaire. FINDINGS: The weekly PA mean across all exercise types was calculated to be 9.3 ± 16.4 hours, which is substantially higher than the daily PA recommendation of 30 minutes most days of the week. The highest daily PA means were associated with occupational activities: Cleaning, 2.7 hours; walking, 2.5 hours; lifting, 1.9 hours; and light yard work, 1.0 hours. CONCLUSIONS: In this sample of low-income Latina women, the average PA hours per week exceed the current PA recommendations. Data collection instruments used in this population could more accurately assess PA if they included a wider range of activities and specific questions about work-related activity.

Scientific evidence underlying the American College of Obstetricians and Gynecologists' practice bulletins.

OBJECTIVE: Clinical guidelines are an important source of guidance for clinicians. Few studies have examined the quality of scientific data underlying evidence-based guidelines. We examined the quality of evidence that underlies the recommendations made by the American College of Obstetricians and Gynecologists (the College). METHODS: The current practice bulletins of the College were examined. Each bulletin makes multiple recommendations. Each recommendation is categorized based on the quality and quantity of evidence that underlies the recommendation into one of three levels of evidence: A (good and consistent evidence), B (limited or inconsistent evidence), or C (consensus and opinion). We analyzed the distribution of levels of evidence for obstetrics and gynecology recommendations. RESULTS: A total of 84 practice bulletins that offered 717 individual recommendations were identified. Forty-eight (57.1%) of the guidelines were obstetric and 36 (42.9%) were gynecologic. When all recommendations were considered, 215 (30.0%) provided level A evidence, 270 (37.7%) level B, and 232 (32.3%) level C. Among obstetric recommendations, 93 (25.5%) were level A, 145 (39.7%) level B, and 117 (34.8%) level C. For the gynecologic recommendations, 122 (34.7%) were level A, 125 (35.5%) level B, and 105 (29.8%) level C. The gynecology recommendations were more likely to be of level A evidence than the obstetrics recommendations (P=.049). CONCLUSION: One third of the recommendations put forth by the College in its practice bulletins are based on good and consistent scientific evidence.

Meditative movement as a category of exercise: implications for research.

INTRODUCTION: Meditative Movement (MM) is proposed as a new category of exercise defined by (a) some form of movement or body positioning, (b) a focus on breathing, and (c) a cleared or calm state of mind with a goal of (d) deep states of relaxation. REVIEW: Two forms of exercise meeting this definition, Qigong and Tai Chi, are reviewed to examine health benefits found in the research literature, recap elements that should be assessed in MM research, and suggest where aspects of MM intersect with, and are distinguished from, conventional forms of exercise. RESULTS: Relevant dimensions of the key elements of MM, such as frequency, duration, type of movement, degree of exertion, description of breathing, and achievement of relaxed state are recommended to be clearly described and measured to consistently define the category across studies and clarify how MM may affect health outcomes in similar, and perhaps different, ways than conventional exercise. CONCLUSIONS: If these suggested standards are used, we will gain a better understanding of which elements are necessary for achieving targeted outcomes. Over time, as MM is studied as a category of exercise, research may progress more efficiently to define the domains of physiological and psychological benefit.