Search Results (188)

Background/Objectives: Hispanic adolescents experience elevated rates of disordered eating behaviors and body dissatisfaction, yet limited research has examined how gender and weight status interact to shape these risks within this population. Methods: A cross-sectional survey was conducted among 680 Hispanic adolescents (ages 9–15) from a predominantly Mexican-American middle school. Participants completed the Modified Kids Eating Disorder Survey (M-KEDS), and height and weight were objectively measured to determine BMI-for-age percentile. Chi-square tests, Mann–Whitney U tests, and logistic regression were used to assess differences by gender and weight status, including interaction effects. Bonferroni correction was applied for multiple comparisons. Effect sizes (Cramér’s V, odds ratios with 95% CI) were reported. Results: Approximately 73% of participants reported body dissatisfaction, with significant differences observed by gender and weight status. Adolescents with overweight/obesity reported significantly higher negative weight attitudes and extreme weight control behaviors than healthy-weight peers (p < 0.001), with large effect sizes. Females endorsed more disordered attitudes and behaviors, except for exercise to lose weight, which was more common among overweight/obese males. Conclusions: These findings underscore the high prevalence and significance of disordered eating behaviors in Hispanic adolescents, including those at a healthy weight. Results highlight the importance of culturally tailored, gender-sensitive screening and prevention strategies. Schools serve as critical settings for early identification, and tools like the M-KEDS can help address disparities in care access and improve outcomes among Hispanic youth. Full article

This study aimed to investigate the effects of augmented reality (AR) treadmill walking training on cognitive function, body composition, physiological responses, and acceptance among older adults. Additionally, it analyzed the relationships between body composition, physiological responses, and the acceptance of AR technology. A randomized controlled trial was conducted, recruiting 60 healthy older adults, who were assigned to either the experimental group (AR treadmill walking training) or the control group (traditional treadmill walking training). The assessments included cognitive function evaluation (stride length, walking speed, and balance test), body composition (BMI, skeletal muscle mass, fat mass, and body fat percentage), and physiological responses (heart rate, calorie expenditure, exercise duration, and distance covered). Furthermore, the AR Acceptance Scale was used to assess perceived ease of use, perceived usefulness, attitudes, and behavioral intentions. The results indicated that AR treadmill walking training had significant positive effects on improving cognitive function, optimizing body composition, and enhancing physiological responses among older adults. Compared with the traditional training group, the experimental group demonstrated better performance in stride length, walking speed, and balance tests, with increased skeletal muscle mass and reduced body fat percentage. Additionally, improvements were observed in heart rate regulation, calorie expenditure, exercise duration, and distance covered, reflecting enhanced exercise tolerance. Moreover, older adults exhibited a high level of acceptance toward AR technology, particularly in terms of attitudes and behavioral intentions, as well as perceived usefulness. This study provides empirical support for the application of AR technology in promoting elderly health and suggests that future research should explore personalized adaptation strategies and long-term effects to further expand the potential value of AR technology in elderly exercise. Full article

Background/Objectives: Anorexia nervosa (AN) is a severe disorder with limited treatment efficacy. This interim analysis aimed to assess the preliminary efficacy and safety of transcranial direct current stimulation (tDCS) in reducing core AN symptoms, stress, depression, low self-esteem, and BMI in adolescent females, to determine the rationale for continuing the study. Methods: A single-center, randomized, double-blind, placebo-controlled trial included 20 adolescent females with AN assigned to an active tDCS group (n = 10) or a sham group (n = 10). The intervention involved 30 sessions over three weeks, targeting the dorsolateral prefrontal cortex. Outcomes were assessed at baseline, post-treatment, and follow-up using the Eating Attitudes Test (EAT-26) for eating disorder symptoms, the Perceived Stress Scale (PSS-10) for stress, the Beck Depression Inventory (BDI) for depression, the Rosenberg Self-Esteem Scale (SES) for self-esteem, and body mass index (BMI) measurements. Safety and tolerability were assessed using the tDCS Side Effects Questionnaire. Results: Eating disorder symptoms significantly decreased in the active tDCS group at study end (p = 0.003) and follow-up (p = 0.02), while no significant changes were observed in the sham group. Although BMI increased more in the active group (13.78%) than in the sham group (7.31%), this difference was not statistically significant (p = 0.10). Conclusions: Adverse effects were mild and transient, with no serious safety concerns reported. Based on the results of this interim analysis, the study will proceed due to promising efficacy outcomes and good treatment tolerability. Full article

Active suspension can improve vehicle vibrations caused by road excitation. For trucks, the vehicle mass change is usually large, and changes in vehicle mass will affect the control performance of the active suspension. In order to solve the problem of active suspension control performance decreasing due to large changes in vehicle mass, this paper proposes an active suspension control method integrating online mass estimation. This control method is designed based on the mass estimation algorithm of the recursive least squares method with a forgetting factor (FFRLS) and the Linear Quadratic Regulator (LQR) algorithm. A set of feedback control matrices $K$ is obtained according to different vehicle masses. Then, the mass estimation algorithm can estimate the actual vehicle mass in real-time during the vehicle acceleration process. According to the mass estimation value, a corresponding feedback control matrix $K$ is selected from the control matrix set, and $K$ is used as the actual control gain matrix of the current active suspension. With specific simulation cases, the vehicle vibration response is studied by the numerical simulation method. The results of the simulation process have shown that when the vehicle mass changes largely, the suspension dynamic deflection and tire dynamic deformation are significantly reduced while keeping a good vehicle body attitude control effect by using an active suspension controller integrated with online mass estimation. In the random road simulation, suspension dynamic deflection is reduced by 3.26%, and tire dynamic deformation is reduced by 5.91% compared with the original active suspension controller. In the road bump simulation, suspension dynamic deflection and tire dynamic deformation are also significantly reduced. As a consequence, the stability and comfort of the vehicle have been greatly enhanced. Full article

Aiming at the problems of complex control processes, strong model dependence, and difficult engineering application when the existing active suspension control strategy is applied to multi-axle vehicles, an active suspension control strategy based on the inverse position solution of a parallel mechanism is proposed. First, the active suspension of the three-axle emergency rescue vehicle is grouped and interconnected within the group, and it is equivalently constructed into a 3-DOF parallel mechanism. Then, the displacement of each equivalent suspension actuating hydraulic cylinder is calculated by using the method of the inverse position solution of a parallel mechanism, and then the equivalent actuating hydraulic cylinder is reversely driven according to the displacement, thereby realizing the effective control of the attitude of the vehicle body. To verify the effectiveness of the proposed control strategy, a three-axis vehicle experimental platform integrating active suspension and hydro-pneumatic suspension was built, and a pulse road experiment and gravel pavement experiment were carried out and compared with hydro-pneumatic suspension. Both types of road experimental results show that compared to hydro-pneumatic suspension, the active suspension control strategy based on the inverse position solution of a parallel mechanism proposed in this paper exhibits different degrees of advantages in reducing the peak values of the vehicle vertical displacement, pitch angle, and roll angle changes, as well as suppressing various vibration accelerations, significantly improving the vehicle’s driving smoothness and handling stability. Full article

Major Depressive Disorder (MDD) is a chronic mental disorder characterized by anhedonia, loss of desire, guilt, suicidal thoughts, and appetite changes. It is reported that individuals with MDD resort to binge eating to escape from negative feelings. In this study, we aimed to determine the relationship between binge eating behavior and the concept of psychological pain associated with emotions such as shame, guilt, and anger in individuals with MDD. We conducted the study in the Psychiatry Outpatient Clinics of Balcalı Hospital, Çukurova University Faculty of Medicine. The sample consisted of 147 individuals with MDD without psychotic symptoms and 128 healthy controls with sociodemographic characteristics similar to the MDD group. We administered a sociodemographic data form, the Hamilton Depression Rating Scale (HDRS), Psychache Scale (PS), Tolerance for Mental Pain Scale-10 (TMPS-10), Barratt Impulsiveness Scale (BIS-11), and Eating Disorder Examination Questionnaire (EDE-Q-13). Eighty-two (55.7%) of the patients with MDD were diagnosed with binge eating disorder (BED). In the group of MDD patients with BED comorbidity, the EDE-Q-13 total, binging subscale, and HDRS scores were significantly higher than those of the other groups (p < 0.05 for each group), with large to very large effect sizes (e.g., EDE-Q-13 binging d = 1.04; HDRS d = 1.91; PS d = 1.22). There was no significant difference between the MDD groups (with and without BED) regarding the BIS and BIS subscales’ subscores, PS, and TMPS scores. For participants with MDD, there was a significant same-directional correlation between EDE-Q-13 binging, HDRS, BIS, and PS scores (p < 0.05 for each), with moderate to strong effect sizes (EDE-Q-13 binging and HDRS: r = 0.398, p < 0.001; binging and PS: r = 0.273, p < 0.001; binging and BIS: r = 0.233, p = 0.005; binging and TMPS-10: r = –0.257, p = 0.002). Additionally, a negative correlation was observed between TMPS and the scores for EDE-Q-13 binging, HDRS, BIS, and PS. A linear regression analysis indicated that depression severity and BMI were the strongest predictors of binge eating behavior (R² = 0.243; f² = 0.32). Based on our results, we concluded that the presence of binge eating behavior in patients with MDD is associated with more severe depressive symptoms, psychological pain, impulsivity, and lower tolerance to psychological pain. The finding that binge eating behavior was most strongly associated with depression severity and body mass index (BMI) supports the notion that binge eating behavior is a maladaptive attitude. Longitudinal studies comparing individuals with different BMIs in different clinical samples are needed to confirm our results. Full article

The body roll of the tractor propagates through its rigid hitch system to the mounted implement, causing asymmetrical soil penetration depths between the implement’s lateral working elements, which affects the operational effectiveness of the implement. To address this issue, this study developed an automatic leveling system based on a dual closed-loop fuzzy Proportional-Integral-Derivative (PID) algorithm for tractor-mounted implements. The system employed an attitude angle sensor to detect implement posture in real time and utilized two double-acting hydraulic cylinders to provide a compensating torque for the implement that is opposite to the direction of the body’s roll. The relationship model between the implement’s roll angle and the actuator’s response time was established. The controller performed implement leveling by regulating the spool position and holding time of the solenoid directional valve. Simulink simulations showed that under the control of the dual closed-loop fuzzy PID algorithm, the implement’s roll angle adjusted from 10° to 0° in 1.72 s, which was 56.89% shorter than the time required by the fuzzy PID algorithm, with almost no overshoot. This demonstrates that the dual closed-loop fuzzy PID algorithm outperforms the traditional fuzzy PID algorithm. Static tests showed the system adjusted the implement roll angle from ±10° to 0° within 1.3 s. Field experiments demonstrated that the automatic leveling system achieved a maximum absolute error (MaxAE) of 0.91°, a mean absolute error (MAE) of 0.19°, and a root mean square error (RMSE) of 0.28°, with errors within 0.5° for 92.52% of the time. Results from terrain mutation tests indicate that under a sudden 5° vehicle roll angle change, the system confines implement deviation to ±1.5°. The system exhibits high control precision, stability, and robustness, fulfilling the demands of tractor-mounted implement leveling. Full article

The control accuracy and stability requirements for rotating payloads in remote sensing satellites are becoming increasingly higher. Typically, rotating payloads such as cameras are connected to the satellite body through mechanical bearings. However, clearances in conventional mechanical bearings are inevitable due to assembly tolerances, manufacturing errors, and wear. When clearances exist in the mechanical bearings of cameras, the clearance between the mechanical bearing and the journal can cause impact-induced vibrations. This paper proposes the implementation of magnetic bearings instead of mechanical bearings to connect the payload with the spacecraft body. First, the magnetic bearing is modeled as a rotational joint with clearance in the dynamic system with magnetic constraints. Subsequently, radial and axial magnetic force models are established. Furthermore, a comparative analysis is conducted to investigate the effects of connection approaches, namely traditional mechanical bearing connections and magnetic bearing connections for rotating payloads. Simultaneously, the dynamic responses of rotating payloads under different connections are discussed. The simulation results demonstrate that the camera attitude motion accuracy is improved and the vibration amplitude under disturbance is reduced when using magnetic bearings. Consequently, the magnetic bearing can effectively isolate vibrations and mitigate disturbances, thereby significantly reducing the attitude shake of rotating payloads. Full article

Background/Objectives: There is scientific evidence showing that body- and/or body weight-related blaming, guilting, and shaming continue to be both promoted and tolerated in many societal contexts, including schools and healthcare settings. A deeply ingrained belief still prevails among many individuals that inducing these negative emotions can serve as a motivator for children and adolescents to engage in obesity treatment. Therefore, the aim of this systematic review is to examine these emotions (blame, guilt, shame) in relation to body weight and their impact on psychological functioning within the pediatric population affected by overweight and obesity. Methods: Articles were searched up using PubMed and Web of Science in June 2023 and March 2025. The search was conducted without limiting the years of publication. The inclusion criteria included the following: (1) pediatric samples, (2) full text available, and (3) original research articles. Articles were excluded if they were editorials, letters, replies from authors, review articles, and articles without a full text. Results: The initial search returned 199 results. A total of 16 articles were included in the study. Analysis of the collected records revealed associations between body- or weight-related blame, guilt, and shame and various aspects of psychological functioning in the pediatric population such as (a) interpersonal context (e.g., social stigma, bullying, teasing history, social connectedness, weight-related language used by parents in conversations with children and adolescents; (b) intrapsychic context—relationship with eating and food (e.g., binge eating, dietary restraint, emotional eating, and the risk of developing eating disorders); (c) intrapsychic context—self-perception (e.g., self-esteem, feelings of worthlessness, self-compassion, self-efficacy, perceived control); (d) intrapsychic context—emotional functioning (e.g., emotional distress, anxiety, depression, emotion regulation strategies); and (e) intrapsychic context—additional psychological factors (e.g., mindfulness, quality of life, willingness to seek help, and motivation for both help-seeking and sustaining successful lifestyle changes). Conclusions: Understanding the dynamics of body- and/or weight-related blame, guilt, and shame among children and adolescents with overweight and obesity is essential for developing effective support systems that enhance their well-being and psychological resilience in both the prevention and treatment of obesity. Further research is needed to explore the relationships between body- and weight-related blame, guilt, and shame and psychological functioning in pediatric populations with overweight and obesity, including the dynamics of child–parent–healthcare provider interactions, the context of parenting skills and attitudes that support the child during obesity treatment, the long-term consequences of body- and weight-related blame, guilt, and shame, the relationship between healthcare providers’ tendencies to engage in body- and weight-related shaming or blaming and their communication skills and mental well-being (e.g., levels of professional burnout, emotion regulation skills, and personality traits), as well as the influence of social media on body- and weight-related shame, guilt, and blame. Full article

Background: Weight bias in healthcare can affect the quality of care and create health disparities. In nursing, the presence of weight-biassed attitudes influences the therapeutic relationship and clinical decision-making. However, in Spain, research on this phenomenon remains scarce, hindering the development of strategies to mitigate its impact. Objectives: This study aimed to assess the methodological feasibility of a study on weight bias in nursing, and to explore nurses’ attitudes towards being overweight and obesity and their association with sociodemographic and body image variables. Methods: A cross-sectional, quantitative pilot study was conducted with 22 primary care nurses. The Anti-Fat Attitudes (AFA) and Beliefs About Obese Persons (BAOP) scales, previously validated in Spanish-speaking populations, were applied. Response distribution, the internal consistency of the instruments, and the relationship between variables were analysed. Results: Difficulties were identified in the recruitment of participants and the reliability of certain items of the questionnaire, as well as in the internal consistency of the scales. A trend towards moderate weight-biassed attitudes was observed in the sample, with the highest scores in the AFA’s “Willpower” subscale. The BAOP scale showed a significant negative correlation with the AFA (r = −0.55, p = 0.009), indicating that a lower attribution of obesity to individual control is associated with less discriminatory attitudes. Conclusions: This pilot study helped identify methodological improvements and confirmed the presence of weight bias in nursing. It is recommended that the sample be expanded and the measuring instruments refined before performing the full study. Full article

Background/Objectives: Research on eating disorders (EDs) in individuals with multiple sclerosis (MS) is limited. In ED populations, neuroticism has been linked to ED symptoms through lower self-esteem and greater body dissatisfaction, but these relationships remain unexplored in MS. This study aimed to examine whether self-esteem and body dissatisfaction mediate the link between neuroticism and ED symptoms in individuals with MS. Methods: The current sample consisted of 275 participants who reported a neurologist-confirmed diagnosis of MS (Mage = 43.0, SD = 12.9) with the majority being female (218/275; 79.3%). Participants completed an online questionnaire measuring neuroticism (Big Five Inventory), self-esteem (Rosenberg Self-esteem Scale), body dissatisfaction (Body Shape Questionnaire), and ED symptoms (Eating Attitudes Test-26). Results: A serial mediation analysis controlling for age, sex, and level of ambulation revealed that the association between neuroticism and ED symptoms is respectively and serially explained by self-esteem and body dissatisfaction in individuals with MS. The total model accounted for 43% of the variance in ED symptoms. Conclusions: Findings suggest that self-esteem and body dissatisfaction are important in understanding the relationship between neuroticism and ED symptoms. Neuroticism, self-esteem, and body dissatisfaction may be important targets for assessing and treating EDs in individuals with MS. Future longitudinal research is needed to examine causal relationships. Full article

The literature describes an increased risk of eating disorders (EDs) in patients with Type 1 diabetes mellitus (T1DM) compared to the general population. This risk is mainly related to physical and psychosocial problems related to diabetes. EDs should be carefully assessed and treated in these patients since they are associated with poor glycemic control and significant repercussions of pathology. Background/Objectives: To study the presence of EDs in young Portuguese adults and adults with T1DM, and how gender; age group; method of insulin administration; carbohydrate counting; and body mass index [BMI] variables influence the risk of developing an ED. Methods: Data collection was carried out using an online questionnaire, which was disseminated through the media of several Portuguese diabetes associations. Results: The sample consisted of 47 participants, mostly female, with the age group between 26 and 35 years being most representative. A statistically significant association was found between the Eating Attitudes Test [EAT-26] scores and the BMI of the participants [p = 0.003]; other variables did not show statistically significant differences. Conclusions: To better understand the relationship between these two pathologies, further studies are needed, as well as the development of more screening instruments to assess the risk of EDs specific to T1DM, and preventive interventions and guidelines that can assist the various areas of health that support the population with T1DM. Full article

This study aimed to develop an extended model of goal-directed behavior (MGB) to more thoroughly explain the intention of adults to control body weight. The extended model integrates the crucial constructs and a newly added construct, mental health, as a formative second-order factor in the weight control context into the original MGB. An online survey was conducted with 239 undergraduate students, who responded to the constructs of attitude, subjective norms, anticipated emotions, desire, and mental health. A descriptive analysis was conducted, and the fit of the proposed research model was verified using structural equation modeling. The results showed that the known constructs of attitude, subjective norm, and anticipated emotions were critical predictors of desire in the context of weight control. In addition, desire influenced intention to control weight. Furthermore, mental health had a significant causal relationship with the variables in the extended goal-directed behavior. It broadens the weight control literature by emphasizing the role of affective factors in weight control behavior, expanding the MGB theory with mental health, and providing empirical evidence for an effective weight control intervention program. Full article

Body image and self-esteem are central to psychological health and have been identified as contributing factors in the development and maintenance of psychiatric conditions such as eating disorders, depression, and anxiety. This study investigates the relationship between these variables among university students in India and Italy, contributing to the understanding of how cultural contexts shape these psychological constructs in adult populations. The sample consisted of 767 participants (391 from Lokmanya Tilak Municipal Medical College and 376 from University of Campania Luigi Vanvitelli), aged 18 and above. Participants completed standardized measures, namely the Rosenberg Self-Esteem Scale, Body Investment Scale, and Body Uneasiness Test, through paper-based questionnaires administered in controlled settings. Indian students reported higher self-esteem and more positive body image compared to their Italian counterparts, who exhibited lower self-esteem and higher body dissatisfaction. Across both groups, higher self-esteem was strongly associated with lower body uneasiness. Regression analyses revealed high self-esteem significantly predicted positive body attitudes, with stronger protective effects among Italian participants. Indian students demonstrated broader resilience, potentially linked to cultural values. The findings contribute to psychiatry by emphasizing self-esteem and body image as culturally sensitive psychological constructs that may influence vulnerability to psychiatric distress in young adults. Understanding these factors can support prevention and early intervention strategies in student populations, particularly regarding body dissatisfaction, emotional regulation, and self-concept. Full article

Background/Objectives: Fasting and physical exertion positively affect body mass and composition. This study aimed to examine the effects of physical changes induced by eight days of water-only fasting and a physical exertion test and their influence on body satisfaction and body image parameters in middle-aged men. Methods: Fifteen participants were assessed for physical (height, body mass, and body composition) and psychological (body satisfaction, evaluation of body parts, and body image determinants) aspects before and after the fasting intervention, both at rest and post-exercise. Correlation and concordance coefficients were calculated for the analyzed variables. Results: It was found that the fasting intervention led to a reduction in body mass and a favorable shift in body composition, while also increasing satisfaction with one’s body and its specific parts. This positively impacted volunteers’ self-assessment of their health status. Selected body image parameters remained at an average level for the male population and did not change following the fasting. Attitudes toward body weight control methods and their perceived effectiveness did not change either. Participants favored reducing food intake and eliminating high-calorie products from their diet, rejecting the use pathological methods typically associated with eating disorders. A few associations between physical and psychological aspects of corporeality were observed, whereas significant correlations between satisfaction with body parts and parameters and a positive body image were confirmed. Conclusions: The above suggest that physical conditions and their changes resulting from fasting and physical exertion lead to a positive influence on body satisfaction and its components but do not alter body image. Full article