Heart Rate Variability Biofeedback (HRVB) has been widely used to improve cardiovascular health and well-being. HRVB is based on breathing at an individual\'s resonance frequency, which stimulates respiratory sinus arrhythmia (RSA) and the baroreflex. There is, however, no methodological consensus on how to apply HRVB, while details about the protocol used are often not well reported. Thus, the objectives of this systematic review are to describe the different HRVB protocols and detect methodological concerns. PsycINFO, CINALH, Medline and Web of Science were searched between 2000 and April 2021. Data extraction and quality assessment were based on PRISMA guidelines. A total of 143 studies were finally included from any scientific field and any type of sample. Three protocols for HRVB were found: (i) \"Optimal RF\" (n = 37), each participant breathes at their previously detected RF; (ii) \"Individual RF\" (n = 48), each participant follows a biofeedback device that shows the optimal breathing rate based on cardiovascular data in real time, and (iii) \"Preset-pace RF\" (n = 51), all participants breathe at the same rate rate, usually 6 breaths/minute. In addition, we found several methodological differences for applying HRVB in terms of number of weeks, duration of breathing or combination of laboratory and home sessions. Remarkably, almost 2/3 of the studies did not report enough information to replicate the HRVB protocol in terms of breathing duration, inhalation/exhalation ratio, breathing control or body position. Methodological guidelines and a checklist are proposed to enhance the methodological quality of future HRVB studies and increase the information reported.

BACKGROUND: Management practices of functional constipation are far from satisfactory in developing countries like India; available guidelines do not comprehensively address the problems pertinent to our country.
METHODS: A questionnaire-based survey was conducted among selected practising pediatricians and pediatric gastroenterologists in India, and the respondents agreed on the need for an Indian guideline on the topic. A group of experts were invited to present the published literature under 12 different headings, and a consensus was developed to formulate the practice guidelines, keeping in view the needs in Indian children.
OBJECTIVE: To formulate practice guidelines for the management of childhood functional constipation that are relevant to Indian children.
CONCLUSIONS: Functional constipation should be diagnosed only in the absence of red flags on history and examination. Those with impaction and/or retentive incontinence should be disimpacted with polyethylene glycol (hospital or home-based). Osmotic laxatives (polyethylene glycol more than 1 year of age and lactulose/lactitol less than 1 year of age) are the first line of maintenance therapy. Stimulant laxatives should be reserved only for rescue therapy. Combination therapies of two osmotics, two stimulants or two classes of laxatives are not recommended. Laxatives as maintenance therapy should be given for a prolonged period and should be tapered off gradually, only after a successful outcome. Essential components of therapy for a successful outcome include counselling, dietary changes, toilet-training and regular follow-up.

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BACKGROUND: The aims of this pilot trial were to (i) test the hypothesis that modifying patterns of painful lumbo-pelvic movement using motion-sensor biofeedback in people with low back pain would lead to reduced pain and activity limitation compared with guidelines-based care, and (ii) facilitate sample size calculations for a fully powered trial.
METHODS: A multicentre (8 clinics), cluster-randomised, placebo-controlled pilot trial compared two groups of patients seeking medical or physiotherapy primary care for sub-acute and chronic back pain. It was powered for longitudinal analysis, but not for adjusted single-time point comparisons. The intervention group (n = 58) received modification of movement patterns augmented by motion-sensor movement biofeedback (ViMove, dorsaVi.com) plus guidelines-based medical or physiotherapy care. The control group (n = 54) received a placebo (wearing the motion-sensors without biofeedback) plus guidelines-based medical or physiotherapy care. Primary outcomes were self-reported pain intensity (VAS) and activity limitation (Roland Morris Disability Questionnaire (RMDQ), Patient Specific Functional Scale (PSFS)), all on 0-100 scales. Both groups received 6-8 treatment sessions. Outcomes were measured seven times during 10-weeks of treatment and at 12, 26 and 52 week follow-up, with 17.0 % dropout. Patients were not informed of group allocation or the study hypothesis.
RESULTS: Across one-year, there were significant between-group differences favouring the intervention group [generalized linear model coefficient (95 % CI): group effect RMDQ -7.1 (95 % CI-12.6;-1.6), PSFS -10.3 (-16.6; -3.9), QVAS -7.7 (-13.0; -2.4); and group by time effect differences (per 100 days) RMDQ -3.5 (-5.2; -2.2), PSFS -4.7 (-7.0; -2.5), QVAS -4.8 (-6.1; -3.5)], all p < 0.001. Risk ratios between groups of probability of improving by >30 % at 12-months = RMDQ 2.4 (95 % CI 1.5; 4.1), PSFS 2.5 (1.5; 4.0), QVAS 3.3 (1.8; 5.9). The only device-related side-effects involved transient skin irritation from tape used to mount motion sensors.
CONCLUSIONS: Individualised movement retraining using motion-sensor biofeedback resulted in significant and sustained improvements in pain and activity limitation that persisted after treatment finished. This pilot trial also refined the procedures and sample size requirements for a fully powered RCT. This trial (Australian New Zealand Clinical Trials Registry NCT01572779) was equally funded by dorsaVi P/L and the Victorian State Government.

BACKGROUND: Anorectal disorders such as dyssynergic defecation, fecal incontinence, levator ani syndrome, and solitary rectal ulcer syndrome are common, and affect both the adult and pediatric populations. Although they are treated with several treatment approaches, over the last two decades, biofeedback therapy using visual and verbal feedback techniques has emerged as an useful option. Because it is safe, it is commonly recommended. However, the clinical efficacy of biofeedback therapy in adults and children is not clearly known, and there is a lack of critical appraisal of the techniques used and the outcomes of biofeedback therapy for these disorders.
OBJECTIVE: The American Neurogastroenterology and Motility Society and the European Society of Neurogastroenterology and Motility convened a task force to examine the indications, study performance characteristics, methodologies used, and the efficacy of biofeedback therapy, and to provide evidence-based recommendations. Based on the strength of evidence, biofeedback therapy is recommended for the short-term and long-term treatment of constipation with dyssynergic defecation (Level I, Grade A), and for the treatment of fecal incontinence (Level II, Grade B). Biofeedback therapy may be useful in the short-term treatment of Levator Ani Syndrome with dyssynergic defecation (Level II, Grade B), and solitary rectal ulcer syndrome with dyssynergic defecation (Level III, Grade C), but the evidence is fair. Evidence does not support the use of biofeedback for the treatment of childhood constipation (Level 1, Grade D).

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METHODS: The American College of Physicians (ACP) developed this guideline to present the evidence and provide clinical recommendations on the nonsurgical management of urinary incontinence (UI) in women.
METHODS: This guideline is based on published English-language literature on nonsurgical management of UI in women from 1990 through December 2013 that was identified using MEDLINE, the Cochrane Library, Scirus, and Google Scholar. The outcomes evaluated for this guideline include continence, improvement in UI, quality of life, adverse effects, and discontinuation due to adverse effects. It grades the evidence and recommendations by using ACP\'s guideline grading system. The target audience is all clinicians, and the target patient population is all women with UI.
CONCLUSIONS: ACP recommends first-line treatment with pelvic floor muscle training in women with stress UI. (Grade: strong recommendation, high-quality evidence).
CONCLUSIONS: ACP recommends bladder training in women with urgency UI. (Grade: strong recommendation, moderate-quality evidence).
CONCLUSIONS: ACP recommends pelvic floor muscle training with bladder training in women with mixed UI. (Grade: strong recommendation, moderate-quality evidence).
CONCLUSIONS: ACP recommends against treatment with systemic pharmacologic therapy for stress UI. (Grade: strong recommendation, low-quality evidence).
CONCLUSIONS: ACP recommends pharmacologic treatment in women with urgency UI if bladder training was unsuccessful. Clinicians should base the choice of pharmacologic agents on tolerability, adverse effect profile, ease of use, and cost of medication. (Grade: strong recommendation, high-quality evidence).
CONCLUSIONS: ACP recommends weight loss and exercise for obese women with UI. (Grade: strong recommendation, moderate-quality evidence).

Continence problems can occur during childhood. This guideline is for the Dutch Youth Health Care (JGZ) and gives recommendations for the prevention, early detection and treatment of these problems. As a preventative measure advices for potty training should be started in children aged 18-24 months. If incontinence is present, it is important to take a history and carry out physical examination. In children over the age of 5 who are incontinent of urine the following are recommended: taking child out of bed, calendar with reward system, bedwetting alarm or voiding diary; children over the age of 8 can follow dry bed training. Faecal incontinence is often associated with constipation. Incontinent children with constipation are given advice about normal eating and exercise patterns. If this is not successful then laxatives are prescribed. The JGZ should refer further if there are indications of an underlying condition; if children over the age of 5 are wet during the day; if children are incontinent of faeces at night; if children are incontinent of faeces but not constipated; if children persistently wet the bed; if there is faecal incontinence despite counselling, and if medication needs to be prescribed.

BACKGROUND: The scheduled update to the German S3 guidelines on fibromyalgia syndrome (FMS) by the Association of the Scientific Medical Societies (\"Arbeitsgemeinschaft der Wissenschaftlichen Medizinischen Fachgesellschaften\", AWMF; registration number 041/004) was planned starting in March 2011.
METHODS: The development of the guidelines was coordinated by the German Interdisciplinary Association for Pain Therapy (\"Deutsche Interdisziplinären Vereinigung für Schmerztherapie\", DIVS), 9 scientific medical societies and 2 patient self-help organizations. Eight working groups with a total of 50 members were evenly balanced in terms of gender, medical field, potential conflicts of interest and hierarchical position in the medical and scientific fields. Literature searches were performed using the Medline, PsycInfo, Scopus and Cochrane Library databases (until December 2010). The grading of the strength of the evidence followed the scheme of the Oxford Centre for Evidence-Based Medicine. The recommendations were based on level of evidence, efficacy (meta-analysis of the outcomes pain, sleep, fatigue and health-related quality of life), acceptability (total dropout rate), risks (adverse events) and applicability of treatment modalities in the German health care system. The formulation and grading of recommendations was accomplished using a multi-step, formal consensus process. The guidelines were reviewed by the boards of the participating scientific medical societies.
CONCLUSIONS: Cognitive behavioral therapy combined with aerobic exercise (multicomponent therapy) is strongly recommended. Relaxation as single therapy should not be applied. The English full-text version of this article is available at SpringerLink (under \"Supplemental\").

Constipation is a common complaint in our daily practice, which may occur in young adult or elderly patients. Recently, the incidence has been increasing; however, most patients try to have self-medication using over-the-counter (OTC) drugs, which is usually inappropriate. Moreover, there has been unequal distribution of knowledge and vigilance of medical practitioners, both general physician and specialist doctors on the constipation issue. Therefore, patients usually present with greater complications. The Organizing Committee of Indonesian Society of Gastroenterology or Pengurus Besar Perkumpulan Gastroenterologi Indonesia (PB PGI) considers that it is important to compose a National Consensus on the Management of Constipation in Indonesia. The Consensus is expected to be a guideline for doctors to deal with patients who have constipation in their daily practice, so that optimal results could be achieved. Nowadays, there are new data on definition, pathophysiology, diagnosis and management of constipation; thus, the Organizing Committee of ISG feels that it is necessary to revise the established consensus. We expect that the consensus may bring advantages for medical practitioners in Indonesia and in general, it may cause community health improvement.