Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Tom Hildebrandt is active.

Publication


Featured researches published by Tom Hildebrandt.


Body Image | 2012

A comparison of eating, exercise, shape, and weight related symptomatology in males with muscle dysmorphia and anorexia nervosa.

Stuart B. Murray; Elizabeth Rieger; Tom Hildebrandt; Lisa Karlov; Janice Russell; Evelyn Boon; Robert T. Dawson; Stephen Touyz

In the context of the lack of nosological clarity surrounding muscle dysmorphia, this paper aims to compare the symptomatic profile of muscle dysmorphia and anorexia nervosa in males whilst using measures sensitive to indexing male body image concerns. Twenty-one male muscle dysmorphia patients, 24 male anorexia nervosa patients, and 15 male gym-using controls completed the Eating Disorder Examination-Questionnaire, the Muscle Dysmorphia Disorder Inventory, the Compulsive Exercise Test, and a measure of appearance-enhancing substance use. Men with muscle dysmorphia and anorexia nervosa demonstrated widespread symptomatic similarities spanning the domains of disturbed body image, disordered eating, and exercise behaviour, whilst differences were consistent with the opposing physiques pursued in each condition. Furthermore, correlational analyses revealed significant associations between scores on muscle dysmorphia and eating disorder measures. The present findings provide moderate support for the notion that muscle dysmorphia may be nosologically similar to anorexia nervosa.


Journal of Consulting and Clinical Psychology | 2009

A randomized trial of individual and couple behavioral alcohol treatment for women.

Barbara S. McCrady; Elizabeth E. Epstein; Sharon Cook; Noelle K. Jensen; Tom Hildebrandt

Although alcohol use disorders (AUDs) adversely affect women, research on efficacious treatments for women is limited. In this randomized efficacy trial of 102 heterosexual women with AUDs, the authors compared alcohol behavioral couple therapy (ABCT) and alcohol behavioral individual therapy (ABIT) on percentage of days abstinent (PDA) and percentage of days of heavy drinking (PDH) over 6 months of treatment and 12 months of posttreatment follow-up. Baseline relationship functioning and comorbid disorders were tested as moderators of outcome. Piecewise linear growth models were used to model outcomes. During treatment, women increased their PDA and decreased their PDH, with significantly greater improvements in ABCT than in ABIT (d = 0.59 for PDA; d = 0.79 for PDH). Differences favoring ABCT were maintained during follow-up. Women with poorer baseline relationship functioning improved more on PDA during treatment with ABCT than with ABIT. For PDH, results during treatment and follow-up favored ABCT for women with better baseline relationship functioning. ABCT resulted in better outcomes than ABIT for women with Axis I disorders at the end of follow-up (PDA), and for women with Axis II disorders at the end of treatment (PDA) and at the end of follow-up (PDH).


American Journal of Men's Health | 2007

A Review of Body Image Influences on Men's Fitness Goals and Supplement Use

Donald R. McCreary; Tom Hildebrandt; Leslie J. Heinberg; Michael Boroughs; J. Kevin Thompson

Mens fitness goals are influenced by the lens through which they view their bodies, which is different from the way women view their bodies. Their increased focus on a muscular, hairless body means that they exercise to enhance their physical bulk and are more likely to engage in depilatory behaviors. In addition, the drive for muscularity may be associated with an increased risk anabolic-androgenic steroids and other nutritional supplements whose utility not clearly demonstrated. In the extreme, the drive for muscularity may manifest itself as a form of body dysmorphic disorder referred to as muscle dysmorphia. However, not all men focus on their muscularity. Gay men are more likely than heterosexual men to experience a desire to be thin and are at greater risk for eating and body image disorders. These issues are discussed in this article.


Psychoneuroendocrinology | 2015

Cortisol augmentation of a psychological treatment for warfighters with posttraumatic stress disorder: Randomized trial showing improved treatment retention and outcome

Rachel Yehuda; Linda M. Bierer; Laura C. Pratchett; Amy Lehrner; Erin Koch; Jaklyn A. Van Manen; Janine D. Flory; Iouri Makotkine; Tom Hildebrandt

BACKGROUND Prolonged exposure (PE) therapy for post-traumatic stress disorder (PTSD) in military veterans has established efficacy, but is ineffective for a substantial number of patients. PE is also associated with high dropout rates. We hypothesized that hydrocortisone augmentation would enhance symptom improvement and reduce drop-out rates by diminishing the distressing effects of traumatic memories retrieved during imaginal exposure. We also hypothesized that in responders, hydrocortisone augmentation would be more effective in reversing glucocorticoid indices associated with PTSD than placebo augmentation. METHOD Twenty-four veterans were randomized to receive either 30 mg oral hydrocortisone or placebo prior to PE sessions 3-10 in a double-blind protocol. Glucocorticoid receptor sensitivity was assessed in cultured peripheral blood mononuclear cells (PBMC) using the in vitro lysozyme inhibition test and was determined before and after treatment. Intent-to-treat analysis was performed using latent growth curve modeling of treatment effects on change in PTSD severity over time. Veterans who no longer met diagnostic criteria for PTSD at post-treatment were designated as responders. RESULTS Veterans randomized to hydrocortisone or placebo augmentation did not differ significantly in clinical severity or glucocorticoid sensitivity at pre-treatment. Hydrocortisone augmentation was associated with greater reduction in total PTSD symptoms compared to placebo, a finding that was explained by significantly greater patient retention in the hydrocortisone augmentation condition. A significant treatment condition by responder status interaction for glucocorticoid sensitivity indicated that responders to hydrocortisone augmentation had the highest pre-treatment glucocorticoid sensitivity (lowest lysozyme IC50-DEX) that diminished over the course of treatment. There was a significant association between decline in glucocorticoid responsiveness and improvement in PTSD symptoms among hydrocortisone recipients. CONCLUSIONS The results of this pilot study suggest that hydrocortisone augmentation of PE may result in greater retention in treatment and thereby promote PTSD symptom improvement. Further, the results suggest that particularly elevated glucocorticoid responsiveness at pre-treatment may identify veterans likely to respond to PE combined with an intervention that targets glucocorticoid sensitivity. Confirmation of these findings will suggest that pharmacologic interventions that target PTSD-associated glucocorticoid dysregulation may be particularly helpful in promoting a positive clinical response to PTSD psychotherapy.


Journal of Psychiatric Research | 2010

Body image disturbance in 1000 male appearance and performance enhancing drug users.

Tom Hildebrandt; Lauren Alfano; James W. Langenbucher

Body image disturbance (BID) among men has only recently become a phenomenon of clinical significance with noted heterogeneity in the behavioral consequences of these disturbances. The degree of heterogeneity among appearance and performance enhancing drug (APED) users is unknown and an empirically derived framework for studying BID is necessary. APED users (N=1000) were recruited via the Internet and they completed a comprehensive online assessment APED use patterns, motivations, consequences, and BID. Data were evaluated using latent trait, latent class, and factor mixture models. Model results were validated using a range of covariates including cycle characteristics, age, APED history, and APED risk. A 1-Factor, 4-Class model provided the best fit to the data with Class 1 scoring the highest on all measures of BID and Class 4 the lowest on all measures. Class 2 differed in their preference for being lean over muscular and Class 3 preferred adding mass and size. Each class was associated with unique risks, APED history, and training identity. Not all APED users suffer from significant BID and there are unique profiles for those with elevated BID. Future research on male BID should account for this structure in order to better define relevant diagnostic categories and evaluate the clinical significance of BID.


Body Image | 2009

Body checking behaviors in men

D. Catherine Walker; Drew A. Anderson; Tom Hildebrandt

Males have been facing increasing pressure from the media to attain a lean, muscular physique, and are at risk for body dissatisfaction, disturbed eating and exercise behaviors, and abuse of appearance- and performance-enhancing drugs (APEDs). The aim of the current study was to examine the relationship between body checking and mood, symptoms of muscle dysmorphia, importance of shape and weight, and APED use in undergraduate males. Body checking in males was correlated with weight and shape concern, symptoms of muscle dysmorphia, depression, negative affect, and APED use. Body checking predicted APED use and uniquely accounted for the largest amount of variance in Muscle Dysmorphic Disorder Inventory (MDDI) scores (16%). Findings support the view that body checking is an important construct in male body image, muscle dysmorphia, and body change strategies and suggest a need for further research.


Addiction | 2009

Emphasizing interpersonal factors: an extension of the Witkiewitz and Marlatt relapse model

Dorian Hunter-Reel; Barbara S. McCrady; Tom Hildebrandt

AIM Recently, Witkiewitz & Marlatt reformulated the Marlatt & Gordon relapse model to account for current research findings. The present paper aims to extend this model further to incorporate social variables more fully. METHODS The social-factors and alcohol-relapse literatures were reviewed within the framework of the reformulated relapse model. RESULTS The literature review found that the number of social network members, investment of the individual in the social network, levels of general and alcohol-specific support available within the social network and specific behaviors of network members all predict drinking outcomes. However, little is known about the mechanisms by which these social variables influence outcomes. The authors postulate that social variables influence outcomes by affecting intra-individual factors central to the reformulated relapse prevention model, including processes (e.g. self-efficacy, outcome expectancies, craving, motivation, negative affective states) and behaviors (e.g. coping and substance use). The authors suggest specific hypotheses and discuss methods that can be used to study the impact of social factors on the intra-individual phenomena that contribute to relapse. CONCLUSION The proposed extension of the relapse model provides testable hypotheses that may guide future alcohol-relapse research.


Journal of Abnormal Psychology | 2007

Modeling population heterogeneity in appearance-and performance-enhancing drug (APED) use : Applications of mixture modeling in 400 regular APED users

Tom Hildebrandt; James W. Langenbucher; Sasha J. Carr; Pilar M. Sanjuan

Appearance- and performance-enhancing drugs (APEDs) constitute a wide range of substances, including anabolic-androgenic steroids, nonsteroidal anabolics, and licit and illicit ergo/thermogenics. A great deal of heterogeneity exists in APED use patterns among weight-lifting men, and, consequently, little is known about how these patterns are related to side effect profiles or risk potential. In the current study, a sample of 400 adult men who were regular APED users completed an interactive Web-based instrument detailing information about APED use, side effects, and related indicators of risk. To explore the heterogeneity of APED use patterns, the authors subjected data on use patterns to (a) latent class analysis (LCA), (b) latent trait analysis (LTA), and (c) factor mixture analysis to determine the best model of APED use. Results indicated that a 4-class factor mixture model provided a better fit than LCA and LTA models. The authors also found that severity and latent class were uniquely associated with negative outcomes. Each of the 4 classes was associated with unique side effects, motivations, and participant use patterns. Implications for identifying pathological forms of APED use are discussed.


The Journal of Clinical Psychiatry | 2012

Psychological Outcomes and Predictors of Initial Weight Loss Outcomes among Severely Obese Adolescents Receiving Laparoscopic Adjustable Gastric Banding

Robyn Sysko; Michael J. Devlin; Tom Hildebrandt; Stephanie K. Brewer; Jeffrey L. Zitsman; B. Timothy Walsh

OBJECTIVE Elevated rates of psychopathology are noted among severely obese youth presenting for weight loss surgery. The role of mental health providers in this population is not well defined, and the selection of candidates is often the result of clinical judgment alone. The purpose of this study was to comprehensively evaluate psychiatric symptoms among a large sample of adolescents receiving laparoscopic adjustable gastric banding (LAGB) by (1) examining changes in depressive symptoms and quality of life in the year following surgery; (2) evaluating the interaction between patterns of change in depression, quality of life, and weight postsurgery; and (3) identifying presurgical psychological predictors of initial weight change. METHOD Participants were 101 severely obese adolescents aged 14 to 18 years receiving LAGB at the Center for Adolescent Bariatric Surgery at the Morgan Stanley Childrens Hospital of New York Presbyterian/Columbia University Medical Center between August 2006 and December 2009. Measures of height, weight, depressive symptoms, and quality of life were obtained in the first year following surgery. Changes in the Beck Depression Inventory (BDI), Pediatric Quality of Life Inventory (PedsQL), and body mass index were analyzed using latent growth curve modeling. RESULTS Short-term changes in psychiatric symptoms and weight were analyzed using latent growth curve modeling. Significant changes in total BDI (βslope = -0.885, SE = 0.279, P < .01; βquadratic = 0.054, SE = 0.021, P < .001) and PedsQL (βslope = -0.885, SE = 0.279, P < .001) scores were observed following LAGB, and comparable postoperative changes between psychosocial variables and body mass index were also noted (BDI: covariance [COV] = 0.21, SE = 0.06, P < .001; PedsQL: COV = -0.41, SE = 0.10, P < .01). Two variables (family conflict/loss of control eating) were found to be significant predictors of weight change over the year following surgery (P < .05). CONCLUSIONS Adolescents experienced notable improvements in initial depressive symptoms and quality of life after LAGB, and measures of preoperative binge eating and family conflict affected postsurgery body mass index among youth. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT01045499.


Journal of Consulting and Clinical Psychology | 2010

Heterogeneity Moderates Treatment Response among Patients with Binge Eating Disorder

Robyn Sysko; Tom Hildebrandt; G. Terence Wilson; Denise E. Wilfley; W. Stewart Agras

OBJECTIVE The purpose of the study was to explore heterogeneity and differential treatment outcome among a sample of patients with binge eating disorder (BED). METHOD A latent class analysis was conducted with 205 treatment-seeking, overweight or obese individuals with BED randomized to interpersonal psychotherapy (IPT), behavioral weight loss (BWL), or guided self-help based on cognitive behavioral therapy (CBTgsh). A latent transition analysis tested the predictive validity of the latent class analysis model. RESULTS A 4-class model yielded the best overall fit to the data. Class 1 was characterized by a lower mean body mass index (BMI) and increased physical activity. Individuals in Class 2 reported the most binge eating, shape and weight concerns, compensatory behaviors, and negative affect. Class 3 patients reported similar binge eating frequencies to Class 2, with lower levels of exercise or compensation. Class 4 was characterized by the highest average BMI, the most overeating episodes, fewer binge episodes, and an absence of compensatory behaviors. Classes 1 and 3 had the highest and lowest percentage of individuals with a past eating disorder diagnosis, respectively. The latent transition analysis found a higher probability of remission from binge eating among those receiving IPT in Class 2 and CBTgsh in Class 3. CONCLUSIONS The latent class analysis identified 4 distinct classes using baseline measures of eating disorder and depressive symptoms, body weight, and physical activity. Implications of the observed differential treatment response are discussed.

Collaboration


Dive into the Tom Hildebrandt's collaboration.

Top Co-Authors

Avatar

Robyn Sysko

Icahn School of Medicine at Mount Sinai

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Lauren Alfano

Icahn School of Medicine at Mount Sinai

View shared research outputs
Top Co-Authors

Avatar

Katharine L. Loeb

Fairleigh Dickinson University

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Kurt P. Schulz

Icahn School of Medicine at Mount Sinai

View shared research outputs
Top Co-Authors

Avatar

B. Timothy Walsh

Columbia University Medical Center

View shared research outputs
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge