BACKGROUND: The aim of the present study is to investigate the impact of the Covid-19 pandemic on the effectiveness of psychosomatic rehabilitation.
METHODS: Between April 2019 and March 2022, a total of 18,388 patients from 7 rehabilitation centres could be included in the study. For each patient, score values from the HEALTH-49 and ICF AT-50 Psych questionnaires were calculated at the beginning and at the end of rehabilitation and the effectiveness of the rehabilitation program was determined by comparing the scores at the beginning and at the end of the rehabilitation programme. Using risk adjusted linear mixed models, three time intervals were compared: a pre-pandemic episode (April 2019 to March 2020), the first year of the pandemic (April 2020 to March 2021) and the second year of the pandemic (April 2021 to March 2022).
RESULTS: Overall, it can be stated that the pandemic has substantially impaired the effectiveness of psychosomatic rehabilitation measures. This phenomenon can be observed across a wide range of psychosocial markers and even two years after the start of the pandemic there is no end to the limited effectiveness. With regard to \'psychological and somatoform disorders\', for example, there was a relative decrease in the effectiveness of the rehabilitation measure by 11.29% in the first year of the pandemic compared to the pre-pandemic episode, p < 0.001. In the second year of the pandemic, the effectiveness of the rehabilitation measure was still decreased by 8.8% compared to the pre-pandemic episode, p < 0.001. In addition, the evaluations show that a division of the pandemic effect into direct effects (on the individual) and indirect effects (via further complication of the occupational problem environment) can be made and that the pandemic-related complication of the occupational problem environment are still prevalent more than two years after the start of the pandemic.
CONCLUSIONS: The Covid-19 pandemic has had a significant impact on the psychosomatic rehabilitation programs reducing the effectiveness of treatment not only for a short period of time but constantly until March 2022.
BACKGROUND: DRKS00029669; Date of registration: 02/08/2022.

UNASSIGNED: Behavioral activation (BA) and cognitive-behavioral therapy (CBT) have shown to be efficacious treatment methods for depression. Previous studies focused mostly on the outpatient treatment either in group or individual setting. The present study aimed at comparing the efficacy of group treatment BA vs. CBT, when embedded in inpatient psychosomatic rehabilitation treatment.
UNASSIGNED: 375 inpatients were randomly assigned to either BA (N = 174) or CBT (N = 201). We used established scales for depression such as the Beck Depression Inventory II (BDI-II, self-rating), the Quick Inventory of Depressive Symptomatology (QIDS; expert rating) and the Behavioral Activation for Depression Scale (BADS) to assess changes over the course of the treatment and at follow-up (4 to 6 months). In addition, we measured disability-related functioning with the Mini-ICF-APP, a rating scale built in reference to the International Classification of Functioning, Disability and Health (ICF). Multilevel models with repeated measures were conducted to examine the differences between groups in relation to change over time with patients\' random effects.
UNASSIGNED: Both group formats showed substantial reduction in depressive symptoms at the end of treatment (d= 0.83 BA vs. d= 1.08 CBT; BDI-II) and at follow-up after 4 to 6 months (d = 0.97 BA vs. d = 1.33 CBT, BDI-II; and d = 1.17 BA vs. d = 1.09 CBT, QIDS). There were no significant differences between treatment approaches. At least 50% symptom reduction was achieved by 53.7% and 54.2% in BA vs. CBT respectively. Reported activation levels increased from pre- to posttreatment (d = 0.76 BA vs. d = 0.70CBT), while showing loss of increment between the end of the treatment until follow up in both formats (d = 0.28 BA vs. d = 0.29 CBT).
UNASSIGNED: Both modalities led to significant improvement of symptomatology and functioning at the end of the treatment and at follow-up, thus for the first time demonstrating the practicability of BA in rehabilitation clinics. Considering its lower requirements regarding cognitive abilities and its easier implementation, BA proved to be a good alternative to other psychotherapeutic treatments.

Early response is considered to be an important predictor for therapy outcomes; yet little is known about its relevance in psychosomatic rehabilitation. This paper aims to describe the association of early response in psychosomatic rehabilitation, as well as the associations of early response with pre-rehabilitative factors such as illness and treatment beliefs.
A longitudinal study with three measurement points was applied. Early response was defined using the percent improvement method after two weeks of treatment. Its association with therapy outcome and with illness and treatment beliefs was analyzed using multiple regression analyses.
A total of 264 participants took part. Early response was a significant predictor of psychosomatic rehabilitation outcome, explaining an incremental variance of 1-30% after controlling for initial symptom burden. Illness and treatment beliefs predicted 6-20% variance in early response. Important illness beliefs referred to perceived symptoms, consequences and comprehensibility of the illness. Important treatment beliefs referred to expectations about rehabilitation structure, processes and concerns.
Early response is associated with the therapy outcome of psychosomatic rehabilitation, with illness and treatment beliefs found to be associated with early response. Further research on the predictors of early response in psychosomatic rehabilitation is needed.

High dropout rates are a common problem reported in web-based studies. Understanding which risk factors interrelate with dropping out from the studies provides the option to prevent dropout by tailoring effective strategies.
This study aims to contribute an understanding of the predictors of web-based study dropout among psychosomatic rehabilitation patients. We investigated whether sociodemographics, voluntary interventions, physical and mental health, digital use for health and rehabilitation, and COVID-19 pandemic-related variables determine study dropout.
Patients (N=2155) recruited from 4 psychosomatic rehabilitation clinics in Germany filled in a web-based questionnaire at T1, which was before their rehabilitation stay. Approximately half of the patients (1082/2155, 50.21%) dropped out at T2, which was after the rehabilitation stay, before and during which 3 voluntary digital trainings were provided to them. According to the number of trainings that the patients participated in, they were categorized into a comparison group or 1 of 3 intervention groups. Chi-square tests were performed to examine the differences between dropout patients and retained patients in terms of sociodemographic variables and to compare the dropout rate differences between the comparison and intervention groups. Logistic regression analyses were used to assess what factors were related to study dropout.
The comparison group had the highest dropout rate of 68.4% (173/253) compared with the intervention groups\' dropout rates of 47.98% (749/1561), 50% (96/192), and 42.9% (64/149). Patients with a diagnosis of combined anxiety and depressive disorder had the highest dropout rate of 64% (47/74). Younger patients (those aged <50 y) and patients who were less educated were more likely to drop out of the study. Patients who used health-related apps and the internet less were more likely to drop out of the study. Patients who remained in their jobs and patients who were infected by COVID-19 were more likely to drop out of the study.
This study investigated the predictors of dropout in web-based studies. Different factors such as patient sociodemographics, physical and mental health, digital use, COVID-19 pandemic correlates, and study design can correlate with the dropout rate. For web-based studies with a focus on mental health, it is suggested to consider these possible dropout predictors and take appropriate steps to help patients with a high risk of dropping out overcome difficulties in completing the study.

UNASSIGNED: Patients\' illness and treatment beliefs have been shown to predict health outcomes in many health care settings. However, information about their impact on patient satisfaction is scarce. The aim of this study was to investigate illness- and rehabilitation-related treatment beliefs and met rehabilitation-related treatment expectations and their relationship with patient satisfaction in psychosomatic rehabilitation.
UNASSIGNED: In a repeated measures study design, patients filled out questionnaires 2 to 3 weeks before the start of rehabilitation and at the end of an inpatient rehabilitation 6 to 7 weeks later. The predictive value of illness beliefs, treatment beliefs, and fulfilled treatment expectations regarding patient satisfaction was analyzed with multiple hierarchical regression analyses controlling for sociodemographic and clinical variables.
UNASSIGNED: Two hundred sixty-four patients participated. The sample was composed of equal numbers of men and women (n = 129 each). The mean age was 50.4 years. Most patients had diagnoses from the ICD-10 diagnostic group F3 (affective disorders; n = 145) or F4 (neurotic, stress-related and somatoform disorders; n = 94). Sociodemographic and clinical variables were not associated with patient satisfaction. The explained variance of patient satisfaction increased to 10% by adding illness beliefs (namely personal control and coherence) (p = 0.006), to 5% by adding rehabilitation-related treatment beliefs (namely concerns) (p = 0.063), and to 49% by adding fulfilled expectations (namely a positive discrepancy between expectations and experiences related to outcome expectations and related to participation and treatment structure, and a negative discrepancy between expectations and experiences related to concerns) (p < 0.001) as predictor variables.
UNASSIGNED: This study highlights the relationship of fulfilled (rehabilitation-related) treatment expectations with patient satisfaction in psychosomatic rehabilitation. Given the evidence underlining the importance of patients\' illness and treatment beliefs and expectations, it is vital that these constructs are addressed in corresponding interventions.

Objectives: Psychosomatic rehabilitation clinics represent an important branch of care with good treatment results in Germany. So far, however, it is largely unclear which processes underlie the treatment successes. In the partial evaluations of the Hersfeld catamnesis study presented here, recourse is made to the construct of mentalizing ability, which has become very important in recent psychotherapy research. Methods: The mentalization ability of a large sample (N = 559) was assessed with the help of the Mentalization Questionnaire (MZQ), and psychological and somatic complaints were assessed with HEALTH-PSB scale from HEALTH-49 at three points in time, namely at admission, at discharge and in a 6-month catamnesis. Results: Both the total score of the MZQ and all subscores show significant reductions in mentalization deficits in the small effect size range, the HEALTH-PSB in the high effect size range and the catamnesis in the medium effect size range. A regression analysis shows that the reduction in mentalization deficits has a high predictive power for symptom improvement. Conclusions: The results indicate that the construct of mentalization ability is a central target variable in psychosomatic rehabilitation.
Zusammenfassung Fragestellung: Psychosomatische Rehabilitationskliniken sind ein wichtiger Versorgungszweig für Patient:innen mit psychischen Erkrankungen in Deutschland, für den immer wieder gute Behandlungsergebnisse nachgewiesen wurden. Bisher ist aber weitgehend ungeklärt, welche Prozesse den Behandlungserfolgen zugrunde liegen. In den hier vorgestellten Teilauswertungen der Hersfelder Katamnesestudie wird auf das Konstrukt der Mentalisierungsfähigkeit zurückgegriffen, das in der neueren Psychotherapieforschung eine große Bedeutung erlangt hat. Methoden: An einer großen Stichprobe (N = 559) wurden die Mentalisierungsfähigkeit mithilfe des Mentalization Questionnaire (MZQ) sowie psychische und somatische Beschwerden mit der Symptomskala PSB des HEALTH-49 zu drei Messzeitpunkten erhoben, nämlich bei Aufnahme, zur Entlassung und in einer 6-Montas-Katamnese. Ergebnisse: Sowohl im Gesamtscore des MZQ wie in allen Subscores zeigt sich eine signifikante Reduktion von Mentalisierungsdefiziten im kleinen Effektstärkebereich. Im HEALTH-PSB liegen die Effektstärken im hohen beziehungsweise zur Katamnese im mittleren Bereich. Eine Regressionsanalyse zeigt, dass die Reduktion der Mentalisierungsdefizite eine hohe Vorhersagekraft für die Symptombesserung hat. Schlussfolgerung: Die Ergebnisse liefern Hinweise, das Konstrukt der Mentalisierungsfähigkeit als eine zentrale Zielgröße in der psychosomatischen Rehabilitation zu betrachten.

The need for new technologies in healthcare services has been stressed. However, little is known about the effectiveness of digital interventions integrated in psychosomatic rehabilitation processes. Data from 724 patients from psychosomatic rehabilitation clinics were analyzed with regard to the effectiveness of digital trainings indicated by a change in symptoms related to depression, anxiety, stress, and loneliness from pre- to post-rehabilitation. Rehabilitation satisfaction was examined in association with reaching rehabilitation goals and satisfaction with communication. A mixed repeated measures analyses of covariance, analyses of covariance, and hierarchical stepwise regression analyses were performed. Results indicated a superior effectiveness for the intervention group receiving all offered digital treatments in addition to the regular face-to-face rehabilitation program with regard to symptoms of depression (F (2674) = 3.93, p < 0.05, ηp2 = 0.01), anxiety (F (2678) = 3.68, p < 0.05, ηp2 = 0.01) post-rehabilitation, with large effect sizes for both depression (d = 1.28) and anxiety (d = 1.08). In addition, rehabilitation satisfaction was positively associated with reaching rehabilitation goals and perceived communication with healthcare workers. Digital interventions appeared effective in supporting mental health of psychosomatic rehabilitation patients\' post-rehabilitation. These findings support the inclusion of multidisciplinary and interdisciplinary digital and face-to-face treatment programs and call for more implementations of new technologies in a context of complexity to improve health and healthcare service.

BACKGROUND: The COVID-19 pandemic has largely affected people\'s mental health and psychological well-being. Specifically, individuals with a pre-existing mental health disorder seem more impaired by lockdown measures posing as major stress factors. Medical rehabilitation treatment can help people cope with these stressors. The internet and digital apps provide a platform to contribute to regular treatment and to conduct research on this topic.
OBJECTIVE: Making use of internet-based assessments, this study investigated individuals from the general population and patients from medical, psychosomatic rehabilitation clinics. Levels of depression, anxiety, loneliness, and perceived stress during the COVID-19 pandemic, common COVID-19-related worries, and the intention to use digital apps were compared. Furthermore, we investigated whether participating in internet-delivered digital trainings prior to and during patients\' rehabilitation stay, as well as the perceived usefulness of digital trainings, were associated with improved mental health after rehabilitation.
METHODS: A large-scale, online, cross-sectional study was conducted among a study sample taken from the general population (N=1812) in Germany from May 2020 to April 2021. Further, a longitudinal study was conducted making use of the internet among a second study sample of psychosomatic rehabilitation patients at two measurement time points-before (N=1719) and after (n=738) rehabilitation-between July 2020 and April 2021. Validated questionnaires and adapted items were used to assess mental health and COVID-19-related worries. Digital trainings were evaluated. Propensity score matching, multivariate analyses of covariance, an exploratory factor analysis, and hierarchical regression analyses were performed.
RESULTS: Patients from the psychosomatic rehabilitation clinics reported increased symptoms with regard to depression, anxiety, loneliness, and stress (F4,2028=183.74, P<.001, η2p=0.27) compared to the general population. Patients perceived greater satisfaction in communication with health care professionals (F1,837=31.67, P<.001, η2p=0.04), had lower financial worries (F1,837=38.96, P<.001, η2p=0.04), but had higher household-related worries (F1,837=5.34, P=.02, η2p=0.01) compared to the general population. Symptoms of depression, anxiety, loneliness, and perceived stress were lower postrehabilitation (F1,712=23.21, P<.001, η2p=0.04) than prior to rehabilitation. Psychosomatic patients reported a higher intention to use common apps and digital trainings (F3,2021=51.41, P<.001, η2p=0.07) than the general population. With regard to digital trainings offered prior to and during the rehabilitation stay, the perceived usefulness of digital trainings on rehabilitation goals was associated with decreased symptoms of depression (β=-.14, P<.001), anxiety (β=-.12, P<.001), loneliness (β=-.18, P<.001), and stress postrehabilitation (β=-.19, P<.001). Participation in digital group therapy for depression was associated with an overall change in depression (F1,725=4.82, P=.03, η2p=0.01) and anxiety (F1,725=6.22, P=.01, η2p=0.01) from pre- to postrehabilitation.
CONCLUSIONS: This study validated the increased mental health constraints of psychosomatic rehabilitation patients in comparison to the general population and the effects of rehabilitation treatment. Digital rehabilitation components are promising tools that could prepare patients for their rehabilitation stay, could integrate well with face-to-face therapy during rehabilitation treatment, and could support aftercare.
BACKGROUND: ClinicalTrials.gov NCT04453475; https://clinicaltrials.gov/ct2/show/NCT04453475 and ClinicalTrials.gov NCT03855735; https://clinicaltrials.gov/ct2/show/NCT03855735.

BACKGROUND: Treatment results achieved after fulfilling an inpatient psychosomatic rehabilitation are often not permanent. Additional participation in outpatient rehabilitation aftercare may reduce the risk of recurrent disorders and support a successful reentry to working life. A therapy diary should accompany the aftercare and bring about the self-reflection process of psychosomatic rehabilitates, which could reduce recurrent disease progressions and support the recovery process as a whole. The study focuses on the evaluation of the effectiveness and implementation potentialities of a therapy diary in outpatient rehabilitation aftercare.
METHODS: In a qualitative study, seven therapists for outpatient rehabilitation aftercare in Central Germany and eleven outpatient psychosomatic rehabilitation patients were interrogated using partially standardized, guideline-based expert interviews. The data evaluation is based on the Qualitative Content Analysis according to Mayring.
RESULTS: The results show that an accompanying use of a therapy diary during the outpatient rehabilitation aftercare enables an intense commitment through own thoughts and feelings. By writing down thoughts, emotions, dysfunctional behaviors in problematic situations, great successes are experienced. Through this initiated self-reflection process, the rehabilitant gains a better knowledge of one\'s behavior in dealing with oneself and the environment and thereby, whenever necessary, learns to create new ways of acting.
CONCLUSIONS: The voluntary use of the therapy diary in the outpatient rehabilitation aftercare could assist the therapy process and henceforward the recovery of the rehabilitants, and also increase the prospect of successful occupational rehabilitation.

Using endurance training in nature as a resource in inpatient psychotherapy Objectives: Although positive effects of nature on mental health are generally well-documented, clinical studies into the deliberate use of nature as a resource in in-patient psychotherapy are missing. The following study examined whether an endurance training intervention in psychosomatic rehabilitation showed differential effects on patients depending on its implementation in an indoor or outdoor nature setting. Methods: Endurance training indoors (ergometer) was compared to training outdoors in the nature (walking) in N = 88 in-patients of a psychosomatic rehabilitation clinic using a linear mixed effects model. Health effects were examined using a standardized questionnaire on somatic symptoms (Giessener Beschwerdebogen GBB-24) and a mood questionnaire (Aktuelle Stimmungsskala ASTS). Seasonal effects were assessed by testing half of the sample in summer and half in winter. Secondary analyses of the linear mixed effects model were run for depression as primary diagnosis which accounted for half of the sample. Results: A nature setting positively predicted improvements on the ASTS positive mood scale (B = 0.34; t(245) = 3.25; p = .001; pBonferroni = .052). No significant interaction was found between the effect of the training setting and depression as primary diagnosis (B = -0.05; t(245) = -0.30; p = .76) in secondary analyses. Conclusions: The results primarily point to an improvement in mood following endurance training in a nature setting. Improvements are independent of depression as the primary diagnosis.
Zusammenfassung Fragestellung: Die positive Wirkung von Natur auf die seelische Gesundheit ist gut belegt, bisher gibt es jedoch keine Studien dazu, ob Natur und Naturerleben gezielt als Ressource in der stationären Psychotherapie eingesetzt werden können. Die vorliegende Studie untersucht, ob ein Natursetting Einfluss auf die Wirksamkeit einer bewegungstherapeutischen Intervention im Rahmen der psychosomatischen Rehabilitation hat. Methoden: Hierfür wurde unter Nutzung eines linearen Mixed-Effects-Modells Ausdauertraining im Innenraum (Ergometer) mit Ausdauertraining in der Natur (Walking) bei N = 88 Rehabilitand*innen einer psychosomatischen Rehabilitationsklinik verglichen. Die Auswirkung auf gesundheitsbezogene Variablen wurde anhand des Gießener Beschwerdebogens (GBB-24) und der Aktuellen Stimmungsskala (ASTS) vor und nach einer Trainingseinheit erhoben. Um saisonale Effekte zu erfassen, wurde je die Hälfte der Stichprobe im Sommer und im Winter untersucht. Sekundäranalysen des linearen Mixed-Effects-Modells wurden für die Erstdiagnose Depression durchgeführt, auf die etwa die Hälfte der Stichprobe entfiel. Ergebnisse: Die Durchführung des Ausdauertrainings in der Natur hatte einen positiven Effekt auf Verbesserungen in der ASTS-Skala „positive Stimmung“ (B = 0.34; t(245) = 3.25; p = .001; pBonferroni = .052). In einer sekundären Regressionsanalyse zeigte sich keine signifikante Interaktion des Effekts der Trainingsumgebung mit der Erstdiagnose Depression (B = −0.05; t(245) = -0.30; p = .76). Diskussion: Die Ergebnisse deuten primär auf eine positive Wirkung von Natur auf eine Verbesserung der Stimmung hin. Von dieser profitieren sowohl Patienten mit Depressionen als auch mit anderen Erstdiagnosen gleichermaßen.