Jana Strahler

Jana Strahler
University of Freiburg | Albert-Ludwigs-Universität Freiburg · Institute of Sports and Sport Science

Professor

About

135
Publications
34,095
Reads
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3,138
Citations
Citations since 2017
76 Research Items
2821 Citations
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20172018201920202021202220230200400600800
20172018201920202021202220230200400600800
Additional affiliations
June 2021 - present
University of Freiburg
Position
  • Professor (Full)
April 2019 - September 2019
Bergische Universität Wuppertal
Position
  • Professor
Description
  • appointed representative of the Professorship of Health Psychology and Applied Diagnostics
September 2016 - May 2021
Justus-Liebig-Universität Gießen
Position
  • PostDoc Position

Publications

Publications (135)
Article
Background Cross-sectional and experimental knowledge highlight the contribution of various health-promoting behaviors, such as physical activity, regular sleep, and healthy nutrition to mental and physical health. Beyond these well-studied lifestyle behaviors, music listening and perceived respect in social interactions are just recently proposed...
Article
Objectives: Other than the ongoing debate about the epidemiologic and clinical relevance of pathologically healthful eating, a phenomenon called orthorexia nervosa, there is not much consensus about sex differences in prevalence rates. The aim of this study was to provide a systematic review and meta-analytical combination of derived data to bette...
Article
The extraction of cortisol from fingernails represents a recent advancement in the retrospective, long-term assessment of hypothalamic-pituitary-adrenal (HPA) axis activity: Fingernail cortisol has the potential to overcome some of the major disadvantages of established HPA axis markers. However, the introduction of any novel methodology also raise...
Article
Objectives: Engaging in physical activity and exercise have long been shown to have beneficial effects on (psychosocial) stress reactivity. Initial studies could reveal that these positive effects on stress reactivity also exist for a healthy diet. Aim of this study was to examine whether combining a healthy diet and regular exercise can provide ad...
Article
Full-text available
Background: Orthorexia Nervosa (ON) and exercise addiction (ExAdd) are two phenomena believed to overlap. We conducted a meta-analysis exploring the link between ON and (addictive) exercise behaviors. Methods: A systematic review of major databases and gray literature was carried out for studies reporting on ON and (addictive) exercise behaviors...
Article
Full-text available
Purpose Since the term orthorexia nervosa (ON) was coined from the Greek (ὀρθός, right and ὄρεξις, appetite) in 1997 to describe an obsession with “correct” eating, it has been used worldwide without a consistent definition. Although multiple authors have proposed diagnostic criteria, and many theoretical papers have been published, no consensus de...
Chapter
Orthorexia nervosa is described as an obsessivefixation on healthy eating in order to maintain and optimize health. The progressive rigidity of self-impose dietary rules in orthorexia nervosa may resemble the maladaptive cycle of substance abuse. Phenomenological similarities are high time investment and cognitive and behavioral preoccupation. Never...
Article
Full-text available
The aim of this study was to explore the association between afective temperaments and orthorexic eating and whether temperament may explain cross-cultural diferences in this behavior while considering the two dimensions of orthorexic eating, healthy (HeOr) and nervosa (OrNe). To accomplish this, 337 and 389 individuals were recruited in Lebanon an...
Article
Full-text available
Background and aims Problematic pornography use can be conceptualized as an impulse control disorder or alternatively as a behavioral addiction. Stress is an important trigger in addiction, but less is known about the neural effect of stress in problematic pornography use. Therefore, we aimed at investigating the effect of stress during the anticip...
Article
Full-text available
Objectives: To explore the possible moderating relation between impulsive behavior and maladaptive personality traits in regards to Orthorexia Nervosa (ON). Methods: This cross-sectional study was conducted between July and December 2019 and recruited 519 Lebanese adults from seven community pharmacies randomly selected from a list provided by the...
Article
Full-text available
Orthorexia nervosa, the pathological obsession with eating healthy, shares risks and significant comorbidity with other mental disorders. Based on a behavioral conceptualization of the overlap, emotion regulation, attachment style, and anxious-depressive-stress symptomatology are prominent but insufficiently researched endophenotypes for orthorexia...
Article
Full-text available
Objectives: Sweating, hot flushes, and blushing are symptoms frequently reported by individuals with anxiety disorders. They represent important reinforcers of anxiogenic cognitions and behaviours. One system that may be involved in the manifestation of these symptoms is the thermosensory/thermoregulatory system. The aim of the present study was to...
Article
Zusammenfassung: Orthorexia nervosa beschreibt ein Verhalten, bei dem Personen eine zwang-hafte Beschäftigung mit und obsessives Interesse für gesunde Ernährung zeigen. Diese Beses-senheit, nur gesunde Lebensmittel zu essen, überschneidet sich dabei zumindest teilweise mit sportsüchtigen Verhaltensweisen. Es wird angenommen, dass diesem Zusammenhan...
Article
Full-text available
Background: Negative affective states may increase the risk for problematic pornography use. Underlying neurophysiological mechanisms are, however, not completely understood. Previous research suggests that the participants' emotional state may affect neural processing of sexual stimuli. The aim of this study was to investigate neural correlates of...
Article
Full-text available
Maintaining or initiating exercise activity in the COVID-19 pandemic may act as a buffer against the observed stress-related deterioration in well-being, with emotion regulation (ER) discussed as a possible moderator. Therefore, the present study investigated the interaction between stress, exercise activity (EA), and ER on mood. In an online surve...
Preprint
Full-text available
Background Quarantine and social-distancing measures during the COVID-19 pandemic situation resulted in a radical change in lifestyle behaviors. While the reduction of total physical activity is assumed to negatively impact psychological health (higher stress and anxiety levels), regular sports activity during lockdown conditions has beneficial eff...
Article
Full-text available
Objective Symptoms of exercise addiction, a state of compulsively engaging in intense exercise, and orthorexic eating attitudes, the obsession with eating only healthy foods, often occur together. It is assumed that some more general psychological traits underlie this association. Main aim of this report was to examine similarities and differences...
Article
Full-text available
Background: The COVID-19 lockdown could engender disruption to lifestyle behaviors, thus impairing mental wellbeing in the general population. This study investigated whether sociodemographic variables, changes in physical activity, and sleep quality from pre- to during lockdown were predictors of change in mental wellbeing in quarantined older ad...
Article
Full-text available
Background and aims: The use of pornography, while unproblematic for the majority, can grow into addiction-like behavior which in its extreme form is labeled as compulsive sexual behavioral disorder in the ICD-11 (WHO, 2018). The aim of this study was to investigate the addiction-specific reactivity to cues in order to better understand underlying...
Article
Full-text available
Symptoms of psychological distress and disorder have been widely reported in people under quarantine during the COVID-19 pandemic; in addition to severe disruption of peoples' daily activity and sleep patterns. This study investigates the association between physical-activity levels and sleep patterns in quarantined individuals. An international Go...
Article
Full-text available
The aim of the study was to analyze the effect of personal restrictions on physical activity, mental health, stress experience, resilience, and sleep quality in patients with pulmonary hypertension (PH) during the “lockdown” period of the COVID-19 pandemic. In total, 112 PH patients and 52 age-matched healthy control subjects completed a questionna...
Article
Full-text available
Orthorexia nervosa (OrNe) describes a behavior where eating overly healthy develops into an obsession leading to significant impairment and stress. Initial studies support a bi-dimensional structure of orthorexic eating with one dimension healthy orthorexia (HeOr, interest in healthy eating), which can be distinguished from the dimension OrNe. The...
Article
Full-text available
Background Public health recommendations and government measures during the COVID-19 pandemic have enforced restrictions on daily-living. While these measures are imperative to abate the spreading of COVID-19, the impact of these restrictions on mental health and emotional wellbeing is undefined. Therefore, an international online survey (ECLB-COVI...
Article
On duty, police officers are exposed to a variety of acute, threatening stress situations and organizational demands. In line with the allostatic load model, the resulting acute and chronic stress might have tremendous consequences for police officers' work performance and psychological and physical health. To date, limited research has been conduc...
Article
Full-text available
Public health recommendations and governmental measures during the new coronavirus disease (COVID-19) pandemic have enforced numerous restrictions on daily living including social distancing, isolation, and home confinement. While these measures are imperative to mitigate spreading of COVID-19, the impact of these restrictions on psychosocial healt...
Article
Full-text available
Although recognised as effective measures to curb the spread of the COVID-19 outbreak, social distancing and self-isolation have been suggested to generate a burden throughout the population. To provide scientific data to help identify risk factors for the psychosocial strain during the COVID-19 outbreak, an international cross-disciplinary online...
Article
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Background Studies in regard to womens’ neural reactivity to erotic and other positive emotional cues in association with sexual hormones are relatively rare and with findings being rather inconclusive. Concerning the neural reactions towards erotic stimuli, the LPP is seen as the most relevant ERP-component: More positive amplitudes are supposed t...
Article
Human neuroimaging research suggests the existence of one core network for the subjective valuation of rewards, including the striatum and orbitofrontal cortex. However, there is little research on the neural representation of subjective reward values of visual sexual stimuli (VSS) and on the role of these subjective valuations in the development o...
Article
Background: While there is evidence for increased food intake and craving during the luteal phase, underlying mechanisms are incompletely understood. The present study investigated electrophysiological responses to food pictures as a function of menstrual cycle phase. In addition, the moderating effects of progesterone, eating behaviors (restraint...
Poster
Die Meta-Analyse (19 Studien, N=8’276) zeigt nur einen geringen Zusammenhang zwischen Sport und der Obsession für gesundes Essen. Die Zusammenhänge mit Sportsucht waren deutlich stärker. Dabei gab es keine Geschlechtsunterschiede.
Poster
Die Daten deuten auf einen Γ- förmigen Zusammenhang zwischen Sport und Wohlbefinden wonach jede sportliche Aktivität besser ist als keine. Sehr hohe Aktivitäten (hier ca. 11 h/Woche) boten jedoch keinen zusätzlichen Nutzen.
Article
Full-text available
Background Obsessive healthy eating and its extreme form orthorexia nervosa are epidemiologically significant problems. Mindfulness, the focused, non-judgmental attention to and awareness of present events, may be an important psychological contributor to (orthorexic) eating habits.Methods In this cross-sectional survey-based study, 314 women and 7...
Article
Objectives: Social-cultural factors and personality traits play key roles in determining dietary behaviors. Orthorexia nervosa (ON), the pathological obsession with healthy eating, is getting more and more scientific attention. However, mechanisms and risk factors are hardly understood. Main objectives of this study were to compare the prevalence o...
Article
Full-text available
Significant prevalence rates of pathological healthful eating and its extreme form, orthorexia nervosa (ON), the pathological obsession with healthy eating, have led to increased efforts to understand this phenomenon's clinical relevance. This narrative review qualitatively summarizes existing evidence on the (psycho-)pathology and consequences of...
Article
Full-text available
In risk sports with medium to high risks of injury (e.g., surfing, free solo climbing, wingsuit flying), athletes frequently find themselves in unexpected and threatening situations. Elevated psycho-physiological stress responses to these situations might have tremendous consequences for their performance as well as for their long-term health. To g...
Article
Objective: The individual set point of the hypothalamic-pituitary-thyroid (HPT) axis is largely genetically determined. Apart from this genetic predisposition, the HPT axis may also be malleable to environmental demands such as psychosocial stress. Indeed, previous research has indicated that critical life events often precede the onset of autoimm...
Article
From an evolutionary perspective, sexual stimuli are highly salient and are assumed to be processed with high priority. Hence, attentional processing of sexual cues is expected to not only bias attention but to also distract from other cognitive (foreground) tasks. It is, however, unclear to what extent these stimuli capture attention and whether t...
Article
Full-text available
Background: Research suggests that physical activity (PA) enhances cognitive performance and prevents stress-related impairments of higher order cognitive functions like working memory (WM) performance. The aim of the current study was to investigate the effect of PA on WM performance after acute stress exposure in preadolescent children. Methods...
Article
Sexually explicit material (SEM) is increasingly used in western societies. One reason for this high usage might be the rewarding property of SEM demonstrated in many brain imaging studies showing an activation of the reward system during the presentation of SEM. It is not yet well understood why women use SEM to a remarkably lesser extent than men...
Article
Objective: Due to the impact of stress and related psychophysiological responses on competitive performance, psychological interventions that reduce stress and may thus increase athletic performance need to be evaluated. In this pilot study, the effects of a mindfulness-based intervention (MBI) on competitive anxiety, self-confidence and mindfulne...
Article
Full-text available
Athletes often report on heightened stress, higher disease susceptibility, and a deterioration in mood and performance throughout periods of high training load and competitions. This paper presents a single‐case study combining different research approaches to monitor the dynamic, idiosyncratic responses to competitive stress in elite sports using...
Article
Objective Previous research suggests beneficial effects of physical exercise on stress reactivity due to cross-stressor adaptions of physiological stress response systems. However, results remain inconclusive and it is unclear whether only regular engagement in exercise modulates these physiological adaptations or if acute bouts of exercise can eli...
Conference Paper
It is well known that the menstrual cycle impacts mood and behavior. Less explored is the cycle’s impact on food cue-elicited brain potentials. Following research on premenstrual dysphoric disorder, altered processing can especially be expected during the luteal phase.Using a within-subject design, the present study investigated late positive poten...
Article
Background: Given the high prevalence of clinically relevant premenstrual symptoms and the associated impairment, there is a need for effective treatments. Initial evidence suggests cognitive-behavioural therapy (CBT) as an effective treatment for premenstrual dysphoric disorder (PMDD). The aim of the current randomized clinical trial was to evalua...
Article
The aim of this article is to introduce the compulsive sexual behavior disorder (CSBD) which was, after years of discussion, added to the new classification system of the WHO. The inclusion in the ICD-11 and the associated standardization of diagnostic criteria enable scientists to study predisposing, precipitating, and perpetuating factors involve...
Article
Full-text available
Background and aims: Numerous studies have provided evidence for orthorexia nervosa (ON), an eating pattern characterized by an almost manic obsession for and fixation on healthy eating, to be of epidemiological relevance. However, there is scientific debate on whether it is merely a behavioral or lifestyle phenomenon as compared to a mental disor...
Article
Full-text available
Purpose of Review In the recently released eleventh edition of the International Classification of Diseases (ICD-11), compulsive sexual behavior disorder (CSBD) was for the first time included and classified as an impulse control disorder. The present report aims at summarizing the empirical results concerning the neurobiological underpinnings of C...
Chapter
The majority of behavioral traits and diseases are influenced by many genes (polygenetic), by some genes that affect more than one trait (pleiotropy), and by epistatic effects (genes interacting to create phenotypic variance). Additionally, epigenetic mechanisms highlight the plasticity of gene expression and proteins produced. Genes may not consti...
Article
Laboratory studies confirm physical activity and physical fitness to be protective factors against mental stressors. However, there is still little evidence on the transferability of these findings into real-life stress situations. The main aim of this study was to examine the impact of physical activity and physical fitness on real-life psychophys...
Article
Although sleep is linked to physiological stress systems like the autonomic nervous system (ANS), research is still limited regarding night-and-day interactions between nocturnal sleep characteristics, stress, and diurnal parameters of salivary alpha-amylase (sAA) as a surrogate marker of ANS activity. Fifty healthy university students rated their...
Article
Zusammenfassung Zahlreiche epidemiologische Studien zeigen, dass es sich bei Orthorexia nervosa, der zwanghaften Fixierung auf gesundes Essen, um ein bekanntes und verbreitetes Phänomen in verschiedenen Ländern und Kulturen handelt (Prävalenzen zwischen 1 und 7% in der deutschen Allgemeinbevölkerung). Die Diskussion, ob es sich dabei jedoch ledigli...
Article
Objective: Fatigue is a core feature of functional somatic syndromes (FSS). Fatigue is also prominent in patients with thyroid diseases, which is unsurprising given the role of the hypothalamic-pituitary-thyroid (HPT) axis in regulating physiological energy demands. Research in healthy women has shown that early life adversity is linked with altera...
Article
Attentional interference control is a prominent feature of human cognition. To what extent sexual stimuli attract attention and interfere with cognitive tasks has still little been studied. Our study aimed to identify associations between attentional interference, sexual arousal, trait sexual motivation, and neural activity to sexual distractors wh...
Article
Objective: Vital exhaustion (VE) is characterised by unusual fatigue, increased irritability, and a feeling of demoralisation. It has been found a major risk factor for cardiovascular diseases, and one that is independent of subclinical or clinical manifestations of coronary heart disease or lifestyle-related risk factors. Stress-induced alteratio...
Article
Background: A new approach of psychological interventions prior to stress aiming to optimize expectations may have beneficial effects on a person's health status by reducing physiological stress. The purpose of this experiment was to determine whether a brief psychological intervention designed to optimize personal control expectations prior to ac...
Article
Salivary cortisol (sCort) and salivary alpha-amylase (sAA) constitute proxy measures of the two major stress response systems, i.e. the hypothalamic-pituitary-adrenal axis and the autonomic nervous system, respectively. Potentially confounding determinants of sCort and sAA may limit a reliable concurrent measurement of both biomarkers, if not adequ...
Poster
Numerous findings reveal positive effects of regular physical activity (PA) and enhanced fitness on cognitive functions in children [1,2], whereas acute stress exposure seems to impair cognitive performance [3]. In addition, PA is associated with an attenuated physical response to social-evaluative stress in children [4]. Former studies mainly focu...
Article
Full-text available
Background Experiences of social pain due to social exclusion may be processed in similar neural systems that process experiences of physical pain. The present study aimed to extend the findings on social exclusion and pain by examining the impact of social exclusion on an affective (ie, heat pain tolerance) and a sensory component of pain (ie, hea...
Article
Perceived ethnic discrimination has a negative impact on health. One of the key mechanisms may be a dysregulation of stress-responsive systems. Our aims were to investigate whether (1) acute face-to-face ethnic discrimination induces a stress response, and (2) to compare long-term endocrine functioning between immigrants and nonimmigrants. 30 male...
Article
Music listening is associated with stress-reducing effects. However, most of the results on music listening and stress were gathered in experimental settings. As music listening is a popular activity of daily life, it is of utmost importance to study the effects of music listening on psychobiological stress in an everyday, daily-life setting. Here,...
Article
Introduction: Various behaviors, such as physical activity and sleep, have been shown to have stress-reducing and beneficial effects on wellbeing. In contrast, the rewarding effects of eating and drinking have rarely been investigated, particularly using ecologically valid approaches, and little is known about mediating mechanisms on the biologica...
Article
Objective: Fatigue is a defining characteristic and one of the most debilitating features of fibromyalgia syndrome (FMS). The mechanisms underlying different dimensions of fatigue in FMS remain unclear. The aim of the current study was to test whether stress-related biological processes and physical activity modulate fatigue experience. Methods:...
Article
To assess the circadian variations in salivary immunoglobin A (sIgA) and alpha-amylase activity (sAA), biomarkers of mucosal immune function, together with mood during 2 weeks of repeated sprint training in hypoxia (RSH) and normoxia (RSN). Over a 2-week period, 17 competitive cross-country skiers performed six training sessions, each consisting of...
Article
Fatigue is one of the most commonly reported complaints in the general population. As physical activity (PA) has been shown to have beneficial effects, we hypothesized that everyday life PA improves fatigue. Thirty-three healthy students (21 women, 22.8 ± 3.3 years, 21.7 ± 2.3 kg/m2) completed two ambulatory assessment periods. During five days at...