Body Shape Research Articles

Two new species of Anax Leach, 1815 from the Solomon Islands and Tonga (Odonata: Aeshnidae)

Species of the cosmopolitan genus Anax Leach, 1815 are among the largest dragonflies and the most powerful flyers. Within the genus the proportion between body length and wing and the body shape of both sexes are of great taxonomic importance. Here we describe two new Anax species: Anax insulanus sp. nov., from the Solomon Islands and A. tonga sp. nov., from Tonga. To distinguish both species from a very similar sympatric congener we compare the S3 Index which is defined as the relative length and width at its narrowest point of abdominal segment 3. Anax fumosus celebense Lieftinck, 1942 is raised to species level. Diagnostic characters of male and female (if available) are illustrated. A key is presented for the identification of the males of the 14 species of Anax known to occur in the Australian, the Oceanian and the south of the Indomalayan Biogeographical Realms.

Neuroimaging studies of resting-state functional magnetic resonance imaging in eating disorders

Eating disorders (EDs), including anorexia nervosa (AN), bulimia nervosa (BN), binge-eating disorder (BED), and pica, are psychobehavioral conditions characterized by abnormal eating behaviors and an excessive preoccupation with weight and body shape. This review examines changes in brain regions and functional connectivity in ED patients over the past decade (2013–2023) using resting-state functional magnetic resonance imaging (rs-fMRI). Key findings highlight alterations in brain networks such as the default mode network (DMN), central executive network (CEN), and emotion regulation network (ERN). In individuals with AN, there is reduced functional connectivity in areas associated with facial information processing and social cognition, alongside increased connectivity in regions linked to sensory stimulation, aesthetic judgment, and social anxiety. Conversely, BED patients show diminished connectivity in the dorsal anterior cingulate cortex within the salience network and increased connectivity in the posterior cingulate cortex and medial prefrontal cortex within the DMN. These findings suggest that rs-fMRI could serve as a valuable biomarker for assessing brain function and predicting treatment outcomes in EDs, paving the way for personalized therapeutic strategies.

An observational study of female body shape characteristics in multiracial Malaysia

Abstract The current study aims to explore the representative and typical female body shapes through in-depth observation and analysis of the diversity in Malaysian female body shape characteristics across different ethnic and age groups, which assists in facilitating the establishment of accurate apparel size standards. This study was conducted in Selangor, which is the most populous and developed Malaysian state. The data were collected via a highly systematic approach. The K-mean clustering method was applied to synthesise and analyse the collected data, which classified the body types into five major clusters. The results not only revealed significant differences in the distribution of body shapes across ethnic and age groups but also highlighted the limitations of the various sizing systems currently employed by the Malaysian apparel industry to fulfil the requirements of the diverse Malaysian market. The findings provided practical implications for apparel manufacturers and retailers with concrete evidence to support improved product design and enhance customer satisfaction. A deeper understanding and categorisation of Malaysian females’ body types could also assist the apparel industry in developing more tailored sizing systems. Resultantly, an improved system minimises return rates, optimises inventory management, and supports environmental and sustainability goals by reducing overproduction.

Strategic Approaches in Generation of Robust Microphysiological 3D Musculoskeletal Tissue System

AbstractSkeletal muscle plays a vital role in maintaining the body's shape and regulating various physiological processes. Its function is influenced by a multitude of factors. Given the lack of uniformity in prior research regarding the size and placement of structural pillars within the chip, as well as the choice of cell‐laden hydrogel components with various densities of extracellular matrix, in different gelation times, and cell densities, a meticulous investigation is conducted to enhance the robustness of 3D in vitro musculoskeletal tissues. This study provides guidance on how to optimize the design parameters of skeletal muscle‐on‐a‐chip and hydrogel recipe by evaluating the impact of design elements and hydrogel fabrication conditions on tissue formation and musculoskeletal differentiation. This research reports the direct evidence of mechanical properties of hydrogels are critical in influencing cellular differentiation and tissue functionality through the process of mechanotransduction. The study highlights the importance of standardizing experimental conditions in 3D in vitro musculoskeletal research, and presents a validated framework as a foundation to aid in the development of functional musculoskeletal tissue for clinical and research applications, including disease modeling and regenerative therapies.

Study of the properties and joint operation of resonant sound absorbers depending on their geometry and relative position

The research presented in the work focuses on a damper that utilizes an "intelligent" material called multilayer magnetorheological elastomer. These devices are of interest due to their ability to adjust the elastic properties, size, and shape of the working body by manipulating the external magnetic field. They also have a high load capacity. The effectiveness of the damper's vibration isolation is determined by its design, manufacturing technology, and the composition of the multilayer magnetorheological elastomer. The mechanical and magnetic hysteresis of the device allows for evaluating the controllability of the damper and its ability to absorb vibrations. Research results indicate the presence of a symmetric and narrow hysteresis loop, not exceeding 7 μm, within the operating range of control currents.

7275 Diverse Reasons for Discontinuing Gender Affirming Hormone Therapy

Abstract Disclosure: A. Jain: None. M.S. Irwig: None. Many Transgender and Gender Diverse (TGD) individuals take Gender Affirming Hormone Therapy (GAHT). A study that included 264 adults [67% assigned male at birth (AMAB)] in Georgia found that 2% (n=5) discontinued GAHT over a follow-up period of 64 months. Reasons identified were change in gender identity (n=2), financial barriers (n=2) and venous thrombosis (n=1). Discontinuation was temporary for 2 and permanent for 2. Here we describe the reasons why four TGD individuals discontinued GAHT. Case Descriptions: Patient 1, AMAB, came out as gay as a teenager. In his mid 30s he became unhappy which he attributed to a conflict between religion and his sexual orientation and failed relationships. He thought that changing his sex would solve his problems. He took injectable estrogen for 3-4 years. He subsequently underwent multiple gender-affirmation surgeries including facial feminization surgery, breast implants, an orchiectomy and vaginoplasty. Immediately following the breast implant surgery he had regrets and wanted them removed. He also regretted the vaginoplasty. He stopped estrogen following the bottom surgery. In his 40s he stated that he would like to detransition as he sees himself "as a fake" when looking in the mirror. Patient 2 was assigned female at birth. Puberty was associated with discomfort from having a large chest. In his late 20s he began injectable testosterone which he took for three years. He then decided to take a two year break as he was frustrated that he had not achieved the desired results and because he was still not able to pass as a man. He resumed testosterone two years ago and underwent top surgery. Patient 3, AMAB, knew from a young age that he was transgender. He took estrogen and an antiandrogen for > 5 years and underwent an orchiectomy and vaginoplasty. He was pleased with the results from the GAHT and surgeries. He presented as a woman for many years. A few years ago, however, he awoke one day with the thought that God wanted him to be a man. He decided to detransition and presented to the endocrinology clinic to start testosterone therapy. Patient 4, AMAB, began GAHT in her late 30s. She discontinued GAHT 4 years later due to lack of results (feminization, larger breasts, wider hips and a more curvy figure). She presented to the endocrinology clinic 2 years later, wanting to resume GAHT. Conclusion: In addition to the reasons identified by Gupta et al for discontinuation of GAHT, we also identified unrealistic expectations, not achieving the desired results and perceived conflict between religion and gender identity. Endocrinologists should be aware of the possibility of discontinuation of GAHT and know how to manage any potential complications such as hypogonadism that may arise. Reference: Gupta P et al. J Clin Endocrinol Metab. 2023. Presentation: 6/2/2024

The serotonin 1A receptor promoter polymorphism, rs6295, is associated with morphofunctional features

Introduction. The tendency to weight gain is influenced by many genetic and environmental factors (nutrition, level of physical activity, social well-being, etc.), as well as complex interactions of these factors. Studying the genetic factors of obesity can help in developing individual strategies for the prevention and treatment of this common disease. One of the most important hereditary factors is the neurotransmitter systems gene polymorphism, (including the serotonin system gene polymorphism). The aim of the investigation is to study the associations of single nucleotide polymorphism of the rs6295 locus of the serotonin receptor gene 1A HTR1A with morphofunctional features and body weight gain. Material and methods. The study used the materials of a comprehensive anthropogenetic examination of 386 men and 418 women aged 17 to 30 years. More than 20 morphofunctional indicators were measured using the traditional anthropometric method. The material for genetic analysis was genomic DNA isolated from buccal epithelium. The reliability of intergroup differences was assessed using the Mann-Whitney criterion, while canonical discriminant analysis was used to study intergroup variability. Results. For the first time, a significant correlation was shown between the polymorphism of the serotonin receptor type 1 gene HTR1A and morphofunctional features: individuals with the G/G genotype with greater body weight have lower (compared to carriers of the C/C and C/G genotypes) values of the indicators of the level of metabolic processes and specific metabolism. Conclusion. The statistically significant obtained results may be used in the development of individual strategies for the prevention and treatment of obesity, and also allow us to supplement the information on the association of serotonin system gene polymorphism with morphofunctional features and contribute to expanding our understanding of the human physique features formation and their relationships with hereditary predisposition.

Bias related to overweight and obesity among French psychiatrists: Results of a national survey

BackgroundAccording to people with a higher weight, physicians are the second most stigmatizing group related to excess weight. As a result of these weight-related biases, the therapeutic relationship with the patient and the quality of care would be negatively affected. In addition, this stigma could negatively impact the clinical practice related to higher weight and avoidance of care. ObjectivesThe objective of this study was to assess the stigma of overweight and obesity among psychiatric residents and psychiatrists in France. Specifically, the study aimed to assess factors that may influence weight-related bias among psychiatrists, to explore the relevance of visual assessment of body mass index, and to determine how they this feature is integrated into their practice. MethodAn online questionnaire including sociodemographic items, the Fat Phobia Scale, the Beliefs About Obese Persons Scale, the Body Shape Scales, and questions about their clinical practice was distributed via national professional mailing lists and social networks. ResultsThe survey was answered by 271 seniors or residents in psychiatry. The results indicated a moderate level of weight-related bias among psychiatrists as assessed by the Fat Phobia Scale which was higher in residents than in senior psychiatrists. Over a third of the respondents had no material to assess their patient's weight, and two thirds did not systematically assess overweight or obesity. Finally, the results demonstrate that psychiatrists failed to accurately evaluate overweight or obesity based on male or female silhouettes. ConclusionIt appears that measures should be taken to raise awareness among psychiatrists of the stigmatization of individuals living with a higher weight, as well as to enhance the quality of weight gain care in psychiatry.

Feeding and Eating Disorders in Young People with Type 1 Diabetes: A Systematic Review

Eating disorders (ED) are a growing concern among young individuals with type 1 diabetes (T1D), with a prevalence significantly higher than that observed in the general adolescent population. Studies indicate that adolescents with diabetes are 2 to 3 times more likely to develop ED compared to their non-diabetic peers. This increased prevalence is partly attributed to several risk factors unique to this population. Adolescence itself is a major risk factor for ED, characterized by hormonal fluctuations, rising concerns about body image, and experimental eating behaviors. However, for young people with T1D, these risks are exacerbated by additional challenges. Daily diabetes management, which involves rigorous monitoring of blood glucose levels and precise control of dietary intake, can contribute to increased stress and excessive preoccupation with weight and body shape. Furthermore, social expectations and pressures related to glycemic control can reinforce problematic eating behaviors. ED in young diabetics can have severe consequences on diabetes management and overall health. Restrictive eating or purging behaviors can lead to glycemic imbalances, poor diabetes control, and increased risk of associated complications. This can also worsen psychological difficulties, such as anxiety and depression, thereby amplifying the cycle of deteriorating mental and physical health. Effective management of ED in young diabetics requires a multidisciplinary approach. It is crucial to integrate interventions that address not only nutritional and psychological aspects but also the specific challenges related to managing T1D. Early detection and treatment of ED can improve clinical outcomes and promote a better balance between diabetes management and the mental health of patients.

Prevalence and characteristics of minimal pleural fluid on screening chest MRI

BackgroundMinimal pleural fluid is often seen incidentally on chest MRI. However, its prevalence and clinical characteristics remain unknown. MethodsThis retrospective observational study included 2726 participants who underwent comprehensive medical check-ups for screening, including chest CT and MRI, and transthoracic echocardiography between March 2018 and February 2019. Pleural fluid on MRI was manually measured for maximum thickness. Its distribution, change over time, and relevance to participant characteristics were analyzed. The pulmonary function data of 82 participants and their associations with fluid were also analyzed. ResultsOf the 2726 participants (mean age ± standard deviation, 59 ± 11 years), 2009 (73.7%) had minimal pleural fluid (thickness, 1–9 mm) on either side, with right-sided fluid being more frequent than left-sided fluid (P < 0.001). Negligible changes in fluid thickness were observed one year later. The following parameters were associated with less fluid: age, ≥65 years (P < 0.001); male sex (P = 0.006); current smoking (P < 0.001); body mass index, ≥25 kg/m2 (P < 0.001); and mean arterial pressure, ≥100 mmHg (P = 0.01), whereas a ratio between early mitral inflow velocity and mitral annular early diastolic velocity>14 was associated with more fluid (P = 0.01). The presence of fluid was an independent explanatory variable for a higher percentage of predicted vital capacity (P = 0.048). ConclusionsMRI was highly sensitive in detecting minimal pleural fluid. Pleural fluid found on MRI for health screening was assumed to be physiological and fluid thickness at the steady state might be variable among participants depending on age, sex, smoking habits, body shape, blood pressure, and cardiac diastolic capacity.

Seasonal dimorphism as an expression of sexual dimorphism: Influence of gonad maturity on the body shape of a rocky intertidal polyplacophoran

Seasonal dimorphism in the body shape of marine invertebrates has been poorly explored compared to vertebrates. We aim to investigate through traditional (body length/width ratio, dorsal elevation ratio and angle of elevation) and geometric (centroid size and shape geometric configurations) morphometrics the effect of gonad maturity (via the gonadosomatic index [GSI] and gonad development stages [GDS]) on changes in body shape in males and females of two latitudinally different populations of the broadcast-spawning intertidal mollusc Chiton articulatus. We confirmed that C. articulatus does not present external sexual dimorphism since sex does not have a significant effect on body shape (1%); instead, dimorphism was seasonal and related to the reproductive season, and varied across populations, probably because in the subtropical zone additional energy is invested in shell (scleritome) bending at the same time as the gonad matures, which is opposite of what occurs in the tropical zone. C. articulatus shows a narrower body shape (i.e., diminished body width) during its gonad maturity compared to the rest of the GDS and is corroborated by a body length/width ratio that contributes the greatest variation in the geometric shape descriptors (18%), just below the centroid size (24%). The expression of centroid size differences shows a correspondence with the change in body dimensions expressed by the three morphometric ratios during gonad maturity. The use of traditional body ratios over time may be useful in polyplacophoran molluscs as a proxy tool to estimate gonad maturity and to provide a reliable indication of the reproductive season.

Comparative Effects Of Aerobic, Resistance, Or Combined Exercise On Body Shape

Comparative Effects Of Aerobic, Resistance, Or Combined Exercise On Body Shape

Morphospace of lanternfish larvae and their interplay with oceanographic conditions from the southeastern Pacific Ocean

Lanternfish larval morphology is highly variable probably due to their adaptations to highly variable environmental conditions throughout ontogeny. To study the morphological variability of the larval stage of lanternfishes, samples were collected from the southeast Pacific Ocean between 2014 and 2022. Of the 24 species, nine belonged to the subfamily Lampanyctinae, two to the subfamily Diaphinae, one to the subfamily Notolychinae, one to the subfamily Gymnoscopelinae and 11 to the subfamily Myctophinae. A principal component analysis indicated the presence of body shapes varying from a slender and curved body, and upper jaw oriented downwards, with relatively rounded eyes, to taxa with robust bodies, particularly both the head and trunk, and elongated eyes in a dorsal-ventral plane (PC1 33%). Also, specimens varied from having short jaw, short snout, and slender body, to specimens with larger jaw (reaching behind the eye) and taller snout and trunk (PC2, 23%). Allometric effects were related to variations in body curvature and thickness (Diaphus theta, 12.9%), the curvature of the body and position of the eyes (Lampanyctodes hectoris, 25.1%), lengthening of the jaw and increase in eye size (Diogenichthys atlanticus, 24.6%), and a narrower body and smaller eyes (Hygophum bruuni, 20.5%). Four of the five subfamilies showed covariation between morphometrics and environmental conditions. Diaphinae, Gymnoscopelinae and Lampanyctinae body shape covaried with mean sea temperature of the water column, while Myctophinae larval shape covaried with mean salinity. In conclusion, this study quantifies shape variations during early lanternfish ontogeny from the southeastern Pacific Ocean, identifying main differences and allometric changes between the subfamilies belonging to Myctophidae, with a covariation between the shape of most lanternfish larvae and the environmental conditions experienced by myctophid early stages.

Body image at the trunk: An investigation into externally referenced width perception and picture mapping.

Body image is a conscious representation of the body, encompassing how our body feels to us. Body image can be measured in a variety of ways, including metric and depictive measures. This study sought to assess body image at the trunk by investigating, and comparing, a metric and depictive measure. Sixty-nine healthy participants estimated their thorax, waist, and hip width by externally referencing mechanical calipers. Participants were also asked to select the true image of their trunk from a random display of nine images containing the true image and incrementally shrunken or enlarged images. Participants demonstrated evidence of thorax and waist width overestimation in the width perception task, with no evidence for hip misestimation. For the picture mapping task, the majority of participants were inaccurate. In participants who were inaccurate, approximately equal proportions underestimated and overestimated their trunk width. The two tasks were found to be independent of each other. Distortions, or inaccuracies, were apparent in a metric measure, and inaccuracies also present in a depictive measure, of body image at the trunk for healthy participants. An overestimation bias was apparent in the metric, but not depictive, task. No relationship was found between tasks..

Enhancing Understanding of Eating Psychopathology: A Network Analysis Study

Compassion Focused Therapy for eating disorders (CFT-E) has been shown to be effective in treating eating psychopathology. Exploring which processes identified by the CFT-E model are most linked with eating disorder symptoms could help develop targeted treatments. However, the relationship between these variables requires further investigation. This study explores the interconnections between eating disorder symptoms and processes identified by the CFT-E using a network analysis approach. Participants were 497 individuals (77.3% female) from a community sample who completed measures to assess body dissatisfaction, shape and weight overvaluation, cognitive restraint, bingeing, emotional eating, purging, self-compassion, social comparison through appearance, self-criticism, appearance-related shame, guilt and pride, and positive and negative affect. A regularized partial correlation network was estimated. Appearance-related shame, inadequate self and body dissatisfaction emerged as the central nodes in the network. These findings support the use of interventions targeting shame and self-criticism for the treatment of eating disorder symptoms. Studies with diverse samples are needed to further examine the interconnections between eating psychopathology and the key processes identified by the CFT-E theoretical model.

Bill Length of Non-breeding Shorebirds Influences the Water Depth Preferences for Foraging in the West Coast of India.

Body size, bill length and shape determine foraging techniques, habitat selection and diet among shorebirds. In this study, water depth preferences of different shorebirds with different bill sizes in various habitats including mudflats, mangroves at Kadalundi-Vallikkunnu Community Reserve (KVCR) (19 shorebird species) and adjacent agroecosystems at Vazhakkad (12 species) were studied between 2017 and 2020. The bill length of the shorebirds was significantly and positively associated with the average water depth, where shorebirds were observed to forage. Shorebirds with shorter bill lengths preferred shallow waters and those with longer bills preferred deep waters for their foraging activities. Habitat type also had a significant effect on the shorebird occurrence. Eurasian Curlews in both mangroves and mudflats were observed in areas with a higher water depth compared to other species. This is due to the fact that shorebirds tend to specialise in feeding habitats or in prey items to reduce intraspecific competition and distribute themselves in space and time in accordance with the availability of their resources. The occurrence of some species in agroecosystems is attributed to the reduced food availability, habitat quality and other disturbances for shorebirds on tidal flats, which are critical for sustaining migratory phenology. The differences in bill morphology are crucial in determining diet, water depth, niche preferences and segregation. Morphological characters and hydrological rhythms determine specialisation in diet and habitat preference in shorebirds.

Long- and short-term responses to climate change in body and appendage size of diverse Australian birds.

Changes to body size and shape have been identified as potential adaptive responses to climate change, but the pervasiveness of these responses has been questioned. To address this, we measured body and appendage size from 5013 museum bird skins of 78 ecologically and evolutionary diverse Australian species. We found that morphological change is a shared response to climate change across birds. Birds increased relative bill surface area, tarsus length, and relative wing length through time, consistent with expectations of increasing appendage size as climates warm. Furthermore, birds decreased in absolute wing length, consistent with the expectation of decreasing body size in warmer climates. Interestingly, these trends were generally consistent across different diets and migratory and thermoregulatory behaviors. Shorter term responses to higher temperatures were contrary to long-term effects for appendages, wherein relative appendage size decreased after hotter years, indicating the complex selective pressures acting on birds as temperatures rise with climate change. Overall, our findings support the notion that morphological adaptation is a widespread response to climate change in birds that is independent of other ecological traits.

Mosaic evolution of a learning and memory circuit in Heliconiini butterflies.

How do neural circuits accommodate changes that produce cognitive variation? We explore this question by analyzing the evolutionary dynamics of an insect learning and memory circuit centered within the mushroom body. Mushroom bodies are composed of a conserved wiring logic, mainly consisting of Kenyon cells, dopaminergic neurons, and mushroom body output neurons. Despite this conserved makeup, there is huge diversity in mushroom body size and shape across insects. However, empirical data on how evolution modifies the function and architecture of this circuit are largely lacking. To address this, we leverage the recent radiation of a Neotropical tribe of butterflies, the Heliconiini (Nymphalidae), which show extensive variation in mushroom body size over comparatively short phylogenetic timescales, linked to specific changes in foraging ecology, life history, and cognition. To understand how such an extensive increase in size is accommodated through changes in lobe circuit architecture, we combined immunostainings of structural markers, neurotransmitters, and neural injections to generate new, quantitative anatomies of the Nymphalid mushroom body lobe. Our comparative analyses across Heliconiini demonstrate that some Kenyon cell sub-populations expanded at higher rates than others in Heliconius and identify an additional increase in GABA-ergic feedback neurons, which are essential for non-elemental learning and sparse coding. Taken together, our results demonstrate mosaic evolution of functionally related neural systems and cell types and identify that evolutionary malleability in an architecturally conserved parallel circuit guides adaptation in cognitive ability.

Interpreting the Projected Frontal Area in Front Crawl: Determining the Projected Frontal Area of Each Body Segment.

This study aimed to provide evidence for the interpretation of the projected frontal area (PFA) during front crawl. To achieve this goal, we developed a method for calculating the PFA of each body segment using digital human technology and compared the pressure drag under two calculation conditions: a combination of the PFA with and without accounting for the horizontal velocity of each body segment. Twelve competitive male swimmers performed a 15-meter front crawl at 1.20 m·s-1. The three-dimensional positions of the reflective markers attached to the swimmer's body were recorded using an underwater motion-capture system. Based on the body shape of each swimmer obtained from the photogenic body scanner, individual digital human body models were created with the color of the model's vertices divided into eight body segments. The time series of the volumetric swimming motion was reconstructed using inverse kinematics. The PFA of each body segment was then calculated by the automatic processing of a series of parallel frontal images. The pressure drag index, defined as the value excluding the drag coefficient while simultaneously considering the PFA and the horizontal velocity, was calculated under two conditions: the static condition (accounting for only the PFA of each body segment) and the dynamic condition (accounting for the PFA and horizontal velocity of each body segment). Notably, the pressure drag index was higher under the static condition than under the dynamic condition for the humerus, ulna, and hand segments (p < 0.001). The results obtained using our methodology indicate that the PFA of the upper limb segments overestimates their contribution to pressure drag during front crawl under the static condition.

Accuracy of novel anthropometric indices for assessing the risk for progression of prediabetes to diabetes; 13 years of results from Isfahan Cohort Study.

We examined the accuracy of novel anthropometric indices in predicting the progression of prediabetes to diabetes. This study was performed on the pre-diabetic sub-population from Isfahan Cohort Study (ICS). Participants were followed up from 2001 to 2013. During every 5-year follow-up survey, patients' data regarding the incidence and time of incidence of diabetes were recorded. We evaluated the association between the risk of developing diabetes and novel anthropometric indices including: visceral adiposity index (VAI), lipid accumulation products (LAP), deep abdominal adipose tissue (DAAT), abdominal volume index (AVI), A body shape index (ABSI), body roundness index (BRI) and weight-adjusted waist index (WWI). We categorized the indices into two groups according to the median value of each index in the population. We used Cox regression analysis to obtain hazard ratios (HR) using the first group as the reference category and used receiver operating characteristics (ROC) curve analysis for comparing the predictive performance of the indices. From 215 included subjects, 79 developed diabetes during the 13-year follow-up. AVI, LAP, BRI, and VAI indicated statistically significant HR in crude and adjusted regression models. LAP had the greatest association with the development of diabetes HR = 2.18 (1.36-3.50) in multivariable analysis. ROC curve analysis indicated that LAP has the greatest predictive performance among indices (area under the curve = 0.627). Regardless of baseline confounding variables, prediabetic patients with a higher LAP index may be at significantly higher risk for developing diabetes.