Shape memory alloys (SMAs), are a class of metals that possess the capability to recover substantial deformations resulting from applied mechanical loads through a solid-solid phase transformation. Typical deployment systems for solar arrays on microsats only allow for one-way deployment. However, by using an SMA actuator in place of a conventional deployment system, repeatable deployment and retraction can be achieved. Relative to conventional actuators, SMA-based solid state actuators offer a reduction in the weight, volume, and overall complexity of the system. In this study, a design of an SMA-based solar panel deployment mechanism for a typical microsat is presented. In this design, a conventional actuation system is replaced with a system of SMA torsional actuators, which allows for a deployed and stowed phase to be reached independent of environmental conditions. This design study illustrates that an SMA-based solar array deployment system can provide a viable replacement for a conventional deployment system while significantly reducing the deployment system weight, volume, and complexity.

Youth with mental illness have higher levels of obesity than children in the general population. Both regular physical activity and limited screen time have been recommended to reduce and prevent childhood obesity. This study examines accelerometer-based moderate–vigorous physical activity (MVPA) and screen time among youth with overweight/obesity issues who are receiving mental health care. This study looked at a 12-month weight management randomized clinical trial for overweight/obese youth aged 8–18 years who are receiving mental health services. At baseline, MVPA was assessed using accelerometers, and screen time was self-reported. Among 100 youth, 43% were female, 44% were Black, and 48% were <13 years old. In an adjusted general linear model, higher levels of MVPA were associated with the younger age group (p = 0.012), male participants (p = 0.013), and lower BMI z-scores (p = 0.014). In a separate model, higher screen time was associated with participants who were Black (p = 0.007). Achieving optimal cardiovascular health at the population level requires an understanding of the groups that are most in need of additional assistance. These data reinforce that targeted lifestyle approaches to promote increased physical activity and decreased screen time among overweight/obese youth using mental health services may need additional tailoring for sex, age, and race subgroups.

BackgroundGiven the obesity's high prevalence among individuals with serious mental illness (SMI), translating weight‐loss interventions with demonstrated effectiveness is needed. This study describes the initial translation phase of such an intervention using the Enhanced Replicating Effective Programs (REP) Framework for delivery by mental health program staff.MethodsThe Achieving Healthy Lifestyles in Psychiatric Rehabilitation (Achieving Healthy Lifestyles in Psychiatric Rehabilitation) trial intervention was preliminarily adapted to create the ACHIEVE‐Dissemination (ACHIEVE‐D) curriculum. A treatment‐only study was conducted to rapidly evaluate the curriculum using a mixed‐methods approach including surveys and focus groups. A study coach delivered an abbreviated curriculum to individuals with SMI from a single psychiatric program. Among all participants with SMI (n = 17), outcomes were attendance and satisfaction; 14 participated in a focus group. The program staff observed curriculum delivery and participated in a focus group (n = 3).ResultsOverall, 23 group sessions were delivered. Median attendance was 78.6% across participants with SMI; 92.9% would recommend ACHIEVE‐D to others. The staff found the curriculum acceptable, particularly its structured nature, inclusion of weight management and exercise, and integrated goal setting and tracking. These improvements recommended by participants and/or staff were to assess participant readiness‐to‐change prior to enrollment, change the frequency of weigh‐ins, and train staff coaches on anticipated challenges (e.g., exercise engagement, weight fluctuations).ConclusionsDuring this first REP phase, individuals with SMI and program staff were satisfied with ACHIEVE‐D. Additional refinements will aid future implementation and improve participant experience.

Introduction: Overweight and obesity in youth with serious emotional disturbance (SED) is exceedingly common. In 2015 the AHA called attention to mental illnesses in youth as important risk conditions for early CVD and the need for transformational change in management of overweight and obesity in this group. Our objective was to test a 12-month, innovative healthy weight intervention in youth with SED. Hypothesis: The active intervention is more effective than control in decreasing BMI Z-score compared at 12 m. Methods: We conducted a two-arm randomized trial in 2 outpatient pediatric mental health settings in 112 youth, ages 8-18 yrs. The active intervention group was offered 12m of in-person and virtual individual weight management sessions led by health coaches who provided guidance on improving diet and increasing physical activity, and engaged parents. Results: At baseline, mean (SD) age was 13.0 (2.7) yrs with 46% ages 8-12 and 54% 13-18; 55% were male, 46% Black, 39% had household income less than $50K/yr and 31% lived in a single-parent household. Primary diagnoses were ADHD (41%), major depression (23%), and anxiety (23%). Mean BMI Z-score (SD) was 2.0(0.4), BMI 30.4 (6.4) kg/m 2 .Mean(SD) psychotropic medications were 2.1(1.4). At 12m, 111 (99%) had a follow-up weight; 42 were collected after the onset of the COVID pandemic). The intervention group compared to the control group had 0.15 decrease in BMI Z-Score (95% CI 0.26 to 0.04), p<0.007) between baseline and 12 m (Figure) and a 1.43 kg/m 2 decrease in BMI (95% CI 2.43, 0.42, p<0.006). Estimated net effect on BMI Z-score for intervention vs. control was enhanced during the pandemic but not statistically different from net effects pre-pandemic (p=0.06). Conclusions: A weight control intervention designed for children with SED decreased BMI Z-score substantially over 12 months, including during the COVID-19 pandemic. These results provide empirical evidence in support of weight control programs in a population at high risk for early development of CVD risk factors.