IntroductionThe purpose of this meta-analysis was to examine the efficacy of exercise to reduce depressive symptoms among cancer survivors. In addition, we examined the extent to which exercise dose and clinical characteristics of cancer survivors influence the relationship between exercise and reductions in depressive symptoms.MethodsWe conducted a systematic search identifying randomized controlled trials of exercise interventions among adult cancer survivors, examining depressive symptoms as an outcome. We calculated effect sizes for each study and performed weighted multiple regression moderator analysis.ResultsWe identified 40 exercise interventions including 2,929 cancer survivors. Diverse groups of cancer survivors were examined in seven exercise interventions; breast cancer survivors were examined in 26; prostate cancer, leukemia, and lymphoma were examined in two; and colorectal cancer in one. Cancer survivors who completed an exercise intervention reduced depression more than controls, d + = −0.13 (95% CI: −0.26, −0.01). Increases in weekly volume of aerobic exercise reduced depressive symptoms in dose-response fashion (β = −0.24, p = 0.03), a pattern evident only in higher quality trials. Exercise reduced depressive symptoms most when exercise sessions were supervised (β = −0.26, p = 0.01) and when cancer survivors were between 47–62 yr (β = 0.27, p = 0.01).ConclusionExercise training provides a small overall reduction in depressive symptoms among cancer survivors but one that increased in dose-response fashion with weekly volume of aerobic exercise in high quality trials. Depressive symptoms were reduced to the greatest degree among breast cancer survivors, among cancer survivors aged between 47–62 yr, or when exercise sessions were supervised.

The present paper reviews the research literature on trust in bargaining and mediation. Several models of trust within the bargaining process are also described. It is concluded that trust means different things, depending upon the relationship under investigation. Trust among negotiators can refer to a personality trail (how trusting a negotiator is of others) or to a temporary state. Within the state perspective, trust often refers to one of three orientations: (1) cooperative motivational orientation (MO), (2) patterns of predictable behavior, (3) a problem‐solving orientation. Trust between a negotiator and constituents usually refers to a cooperative MO (i.e., shared loyalty) between these two groups. The addition of a mediator can impact both the opposing negotiators' relationship and each negotiator‐constituent relationship; the mediator also has direct and indirect relationships with the parties and their constituents. Future directions for research on trust are identified.

Background Peer support is recognized globally as an essential recovery service for people with mental health conditions. With the influx of digital mental health services changing the way mental health care is delivered, peer supporters are increasingly using technology to deliver peer support. In light of these technological advances, there is a need to review and synthesize the emergent evidence for peer-supported digital health interventions for adults with mental health conditions. Objective The aim of this study was to identify and review the evidence of digital peer support interventions for people with a lived experience of a serious mental illness. Methods This systematic review was conducted using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) procedures. The PubMed, Embase, Web of Science, Cochrane Central, CINAHL, and PsycINFO databases were searched for peer-reviewed articles published between 1946 and December 2018 that examined digital peer support interventions for people with a lived experience of a serious mental illness. Additional articles were found by searching the reference lists from the 27 articles that met the inclusion criteria and a Google Scholar search in June 2019. Participants, interventions, comparisons, outcomes, and study design (PICOS) criteria were used to assess study eligibility. Two authors independently screened titles and abstracts, and reviewed all full-text articles meeting the inclusion criteria. Discrepancies were discussed and resolved. All included studies were assessed for methodological quality using the Methodological Quality Rating Scale. Results Thirty studies (11 randomized controlled trials, 2 quasiexperimental, 15 pre-post designs, and 2 qualitative studies) were included that reported on 24 interventions. Most of the studies demonstrated feasibility, acceptability, and preliminary effectiveness of peer-to-peer networks, peer-delivered interventions supported with technology, and asynchronous and synchronous technologies. Conclusions Digital peer support interventions appear to be feasible and acceptable, with strong potential for clinical effectiveness. However, the field is in the early stages of development and requires well-powered efficacy and clinical effectiveness trials. Trial Registration PROSPERO CRD42020139037; https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID= 139037

Context African-Americans constitute 13% of the U.S. population yet account for nearly 50% of new HIV infections. Implementation of efficacious behavioral interventions can help reduce infections in this vulnerable population. Objective To examine the efficacy of behavioral interventions to reduce HIV for African-Americans among 78 randomized controlled trials that sampled at least 50% African-Americans (N = 48,585, 81% African-American), measured condom use or number of sexual partners, and provided sufficient information to calculate effect sizes. Methods Independent raters coded participant characteristics, design and methodological features, and intervention content. Weighted mean effect sizes, using both fixed- and random-effects models, were calculated; positive effect sizes indicated more condom use and fewer sexual partners. Results Compared to controls, participants who received a HIV risk reduction intervention improved condom use at short-, intermediate-, and long-term assessments; change was better among MSM and people already infected with HIV, and when interventions provided intensive content across multiple sessions. Intervention participants reduced their number of sexual partners in interventions with intensive interpersonal skills training and in younger samples, especially at delayed intervals. Conclusions Sexual risk reduction interventions for African-Americans increased condom use without increasing the number of sexual partners. Translating these interventions and further enhancing them continue as a high priority.

Mass media interventions may be useful in reducing global HIV/AIDS disparities because of their reach and effectiveness.