Physiological and psychological effects of exercise interventions in HIV disease

The effectiveness of e-health on reducing stigma, improving social support and quality of life among people living with HIV: A systematic review and meta-analysis of randomized controlled trials

BACKGROUND

Many people living with HIV reported poor quality of life, which was primarily due to HIV-related stigma and the lack of social support. Compared with face-to-face interventions, e-health interventions are reported to have potential to help people living with HIV improve their adherence to antiretroviral therapy, promote their management of HIV and depressive symptoms. However, in the literature, the effectiveness of e-health interventions in helping people living with HIV reduce stigma, improve social support and quality of life is unclear.

OBJECTIVE

To examine the effectiveness of e-health interventions in reducing stigma and improving social support and quality of life among people living with HIV.

DESIGN

This study is a systematic review and meta-analysis of randomized controlled trials following the Cochrane Handbook guidelines and PRISMA2020.

METHODS

A comprehensive search was conducted from inception to 1st December 2022 in six databases: PubMed, CINAHL Plus with Full Text, PsycINFO (Ovid), Embase, Web of Science, and CENTRAL (Ovid), and an updated search took place on 11st June 2023. Two authors independently screened the studies and extracted the data. Cochrane's bias risk tool for randomized controlled trials was used to examine the methodological quality of the included studies. The intervention effect was estimated by calculating the standardized mean difference (SMD) and 95 % confidence interval (CI) using Review Manager 5.3. A sensitivity analysis was conducted to test the rigor of the pooled results using one-study-out method. The certainty of evidence was assessed using Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) approach.

RESULTS

Nine studies met eligibility criteria and were included in this review. The results of the meta-analysis showed that e-health interventions could statistically significantly reduce stigma (SMD: -0.29, 95 % CI: [-0.48, -0.10], p = 0.002) and improve quality of life (SMD = 0.49, 95 % CI: [0.30, 0.68], P < 0.001), but had no significant effects on social support (SMD = -0.01, 95 % CI: [-0.48, 0.46] P = 0.96).

CONCLUSIONS

E-health interventions could reduce stigma and improve quality of life among people living with HIV. More studies are needed to further explore if e-health interventions can improve the social support for people living with HIV and investigate how to integrate e-health interventions into the existing health models to help people living with HIV treat and manage HIV/AIDS.

REGISTRATION

The protocol of this study has been registered in the database PROSPERO (registration ID: CRD42022373299).

Exercise and antiretroviral adherence in adults living with HIV: A systematic review

This systematic review assessed the relationship between exercise and ART adherence in adults living with HIV. A comprehensive search through June 2020 for relevant studies was conducted, and PRISMA guidelines were followed. To be included, studies had to meet the following criteria: (a) published in a peer-reviewed journal; and (b) examined the relationship between exercise and ART adherence. A total of 4310 studies were identified, and nine were included. The majority (five out of nine) of studies found a significant and positive relationship between exercise and ART adherence. Strengths, limitations, and future directions are discussed.

Impact of exercise training on symptoms of depression, physical activity level and social participation in people living with HIV/AIDS: a systematic review and meta-analysis

Background

Symptoms of depression are prevalent in people living with human immune deficiency virus/acquired immune deficiency syndrome (PLWHA), and worsened by lack of physical activity/exercises, leading to restriction in social participation/functioning. This raises the question: what is the extent to which physical exercise training affected, symptoms of depression, physical activity level (PAL) and social participation in PLWHA compared to other forms of intervention, usual care, or no treatment controls?

Method

Eight databases were searched up to July 2020, according to the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) protocol. Only randomised controlled trials involving adults who were either on HAART/HAART-naïve and reported in the English language, were included. Two independent reviewers determined the eligibility of the studies, extracted data, assessed their quality, and risk of bias using the Physiotherapy Evidence Database (PEDro) tool. Standardised mean difference (SMD) was used as summary statistics for the mean primary outcome (symptoms of depression) and secondary outcomes (PAL and social participation) since different measuring tools/units were used across the included studies. Summary estimates of effects were determined using a random-effects model (I²).

Results

Thirteen studies met the inclusion criteria with 779 participants (n = 596 participants at study completion) randomised into the study groups, comprising 378 males, 310 females and 91 participants with undisclosed gender, and with an age range of 18–86 years. Across the studies, aerobic or aerobic plus resistance exercises were performed 2–3 times/week, at 40–60 min/session, and for between 6-24 weeks, and the risk of bias vary from high to low. Comparing the intervention to control groups showed significant difference in the symptoms of depression (SMD = − 0.74, 95% confidence interval (CI) − 1.01, − 0.48, p ≤ 0.0002; I² = 47%; 5 studies; 205 participants) unlike PAL (SMD = 0.98, 95% CI − 0.25, 2.17, p = 0.11; I² = 82%; 2 studies; 62 participants) and social participation (SMD = 0.04, 95% CI − 0.65, 0.73, p = 0.91; I² = 90%; 6 studies; 373 participants).

Conclusion

Physical exercise training could have an antidepressant-like effect in PLWHA but did not affect PAL and social participation. However, the high heterogeneity in the included studies, implies that adequately powered randomised controlled trials with clinical/methodological similarity are required in future studies.

Trail Registration number

INPLASY202040048.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12879-022-07145-4.

Comparative effects of 6-weeks progressive resistance exercise and moderate intensity aerobic exercise on CD4 count and weights of people living with HIV/AIDS in Alex-Ekwueme Federal University Teaching Hospital Ebonyi State

INTRODUCTION

The most significant clinical challenges in people living with HIV/AIDS (PLWHA) are decline in CD4+ T helper cells and abnormal weight reduction. Consequently, PLWHA who are on Anti-Retroviral Therapy (ART) or Highly Active Anti-Retroviral Therapy (HAART) are usually predisposed to coronary artery diseases due to abnormal weight gain (lipohypertrophy), though with improved and unstable Cluster of Differentiation 4 (CD4) counts.The main aim of this study was to compare the effects of 6 weeks progressive resistance exercise (PRE) and moderate intensity aerobic exercise (MIAE) on CD4 count, and weight of PLWHA in Alex-Ekwueme Federal University Teaching Hospital Ebonyi State.

METHOD

The study adopted quasi experimental research design. The population of the study was 60 Human Immunodeficiency Virus/Acquired Immunodeficiency Syndrome patients that attended HIV clinics at Alex-Ekwueme Federal University Teaching Hospital Abakaliki (AE-FUTHA) which formed 58 sample sizes for this study.Simple random sampling technique was adopted for the study and flow cytometry, Heel Densitometer (X-rite 331C), and Omron BF 400 were the instrument used for data collection of CD4 counts and weight respectively; and they are standardized hence not validated. Mean, standard deviation and Analysis of Co-variance (ANCOVA) were used to analyze the data obtained. The reliability coefficient obtained from the pilot study was 0.848 and 0.994 for CD4 and WEIGHT respectively.

RESULTS

The major findings revealed a significant difference after 6 weeks' PRE and MIAE on CD4 and Weight of PLWHA.

CONCLUSION

Health promotion policy maker's arm of the government and Healthcare givers should integrate and enforce the use of exercises either as a single regimen or combined exercises into the management plan of PLWHA for greater boost in absolute CD4 count bearing in mind that both have positive effects. Physiotherapist should be integrated in the managements of PLWHA for appropriate prescription and education of therapeutic exercises for body weight.

Effects of Exercise Interventions on Aerobic Capacity and Health-Related Quality of Life in People Living With HIV/AIDS: Systematic Review and Network Meta-Analysis

OBJECTIVE

Exercise is a recommended component of care for people living with HIV/AIDS; however, it is unclear which type of exercise is most effective. The purpose of this study was to investigate the relative effects of different types of exercise interventions on aerobic capacity measured by peak oxygen consumption (peak VO2) and health-related quality of life (HRQoL) in this population.

METHODS

For this systematic review and indirect-comparisons meta-analysis (network meta-analysis), different electronic databases were searched up to February 2020 for randomized controlled trials that evaluated the effects of different types of exercise interventions on peak VO2 and HRQoL of people living with HIV/AIDS. Mean differences, standardized mean difference (SMD), and 95% CI were calculated. Fixed- and random-effects Bayesian network meta-analysis were used to compare the relative effectiveness of the different exercise interventions.

RESULTS

Forty studies met the study criteria, reporting on a total of 1518 patients. When comparing the exercise interventions with usual care (control group) for the peak VO2 outcome, combined aerobic and resistance exercise was the highest ranked exercise intervention with an SMD of 4.2 (95% CI = 2.5 to 5.9), followed by aerobic exercise (SMD = 3.1; 95% CI = 1.4 to 5.1). Compared with aerobic exercise, resistance training, and yoga, combined aerobic and resistance exercise was the best exercise intervention to promote improvement on physical function, general health, mental health, and energy/vitality domains HRQoL.

CONCLUSION

The combined aerobic and resistance exercise was the highest ranked exercise intervention to improve peak VO2 and HRQoL. Combined aerobic and resistance exercise should be considered as a component of care for people living with HIV/AIDS.

Effects of a four-week aerobic exercise programme on depression, anxiety and general self-efficacy in people living with HIV on highly active anti-retroviral therapy

The Human Immunodeficiency Virus (HIV) remains a major public health concern. Depression, anxiety and reduced self-efficacy are common psychological problems experienced by people living with HIV. We investigated the effects of a four-week, supervised aerobic exercise programme on depression, anxiety and self-efficacy of people living with HIV on HAART in Ibadan, Nigeria. A quasi-experimental design was used. Fifty-three eligible participants completed the study and only their data were analysed. The experimental subjects received aerobic exercise training for thirty minutes, three times per week for four weeks, alongside HAART, while control subjects were only on HAART. Depression, anxiety and self-efficacy scores were assessed at baseline and after the fourth week. Descriptive statistics of mean and standard deviation were used to summarise data, and inferential statistics of independent t-test was used to compare data between groups. At the end of the aerobic exercise programme, there was significant improvement in depression (p < 0.001), anxiety (p < 0.001) and self-efficacy scores (p = 0.042) in the experimental group, compared to the control group. More attention should be given to the prevention and management of psychological problems in people living with HIV through the use of aerobic exercise.

The effect of HIV status on post-stroke outcomes in personal activities of daily living

Introduction

This study explored the impact of HIV on the functional recovery of personal activities of daily living of stroke survivors. This assisted in identifying possible implications for the rehabilitation of stroke survivors who are also HIV-positive.

Method

A quantitative, descriptive, longitudinal comparative research design was used to determine the change in personal activities of daily living scores of HIV-negative and HIV-positive stroke survivors from admission to 1 month after discharge. Data were collected at a rehabilitation unit using the South African Database Functional Measure.

Results

There was no difference in the rate and nature of functional recovery of personal activities of daily living between the two groups between admission and discharge. A difference was noticed during the period from admission to 1 month after discharge, during which the HIV-negative group continued to show improvement, while the HIV-positive group showed little improvement or a decline in personal activities of daily living scores.

Conclusions

While the rate and nature of functional recovery related to personal activities of daily living for HIV-positive and HIV-negative stroke survivors is similar during inpatient care, discharge planning for the HIV-positive group needs to consider the decline in personal activities of daily living functioning post discharge. Regular follow-ups and the inclusion of the stroke survivors in an outpatient treatment programme is recommended.

Psychosocial Correlates of Body Image and Lipodystrophy in Women Aging With HIV

Body image disturbance is increasingly relevant as women living with HIV (WLWH) live longer. We explored body image disturbance and changes in fat distribution (lipodystrophy) in 63 WLWH (mean age = 51 years) and evaluated associations among lipodystrophy, body image, and psychosocial variables. Eighty-one percent of participants reported one or more body parts (of six assessed) demonstrating lipodystrophy, and more than one third reported three or more affected body parts. Increased belt/waist (58%) and increased chest/breast (39%) sizes were most common. More diffuse lipodystrophy was significantly associated with poorer body image (F[2,54] = 11.86, p < .001, partial η = .313) and anxiety (F[2,52] = 3.82, p = .029, partial η = .133) after controlling for age and duration of infection. Lipodystrophy was prevalent in our sample; more diffuse lipodystrophy was associated with anxiety and poor body image. Providers should assess lipodystrophy in older WLWH and provide referrals for mental health services.

The effectiveness of a community-based exercise program on depression symptoms among people living with HIV

HIV is a worldwide public health issue affecting millions of individuals, and people living with HIV (PLWH) are often affected by depression. Nonetheless, exercise can prevent and treat depression among PLWH. The aim of the present study was to investigate the effect of exercise on depression symptoms in PLWH. Using a prospective single-arm trial, a semi-supervised community-based exercise intervention was offered 3 times/week for 12 weeks to PLWH (n = 52; age: 49 ± 6 years; HIV diagnosis: 19 ± 15 years). Participants were divided into compliant (≥1 exercise session/week) and non-compliant (<1 exercise session/week) groups according to their attendance in the intervention. Depression symptoms were assessed using the Beck Depression Inventory (BDI), and the change in BDI from baseline to post-intervention was assessed with an analysis of covariance, adjusted for demographics. The post-intervention BDI score was significantly lower (p = 0.027) for the compliant group compared to the non-compliant group, and the rate of improvement from moderate/severe symptoms of depression to minimal symptoms of depression was four times greater in the compliant group. In conclusion, a community-based exercise program may be effective in reducing depression symptoms among PLWH.

Physical activity, exercise, and chronic diseases: A brief review

Chronic diseases are the leading cause of death worldwide with increasing prevalence in all age groups, genders, and ethnicities. Most chronic disease deaths occur in middle-to low-income countries but are also a significant health problem in developed nations. Multiple chronic diseases now affect children and adolescents as well as adults. Being physically inactive is associated with increased chronic disease risk. Global societies are being negatively impacted by the increasing prevalence of chronic disease which is directly related to rising healthcare expenditures, workforce complications regarding attendance and productivity, military personnel recruitment, and academic success. However, increased physical activity (PA) and exercise are associated with reduced chronic disease risk. Most physiologic systems in the body benefit positively from PA and exercise by primary disease prevention and secondary disease prevention/treatment. The purpose of this brief review is to describe the significant global problem of chronic diseases for adults and children, and how PA and exercise can provide a non-invasive means for added prevention and treatment.

The differences in functional recovery between HIV-positive and HIV-negative stroke survivors

Objectives

This study aims to identify the differences in functional abilities between stroke survivors who are human immunodeficiency virus (HIV)-positive and HIV-negative.

Patients and methods

This was a retrospective, longitudinal record review of stroke survivors' files between April 2005 and December 2010. Of a total of 173 stroke survivors who were admitted to the rehabilitation unit, 141 (75 males, 66 females; mean age 52.7±14.3 years; range, 19 to 86 years) met the inclusion criteria. The patients were divided into two groups as HIV-positive (n=21) and HIV-negative (n=120). Functional ability was recorded using the admission and discharge BETA® scores.

Results

Ischemic strokes were more prevalent than hemorrhagic strokes (74.5% vs. 25.5%, respectively) with hypertension as the most common (31.9%) stroke risk factor. The mean age of stroke onset for HIV-positive patients and HIV-negative patients was 39.6 years and 54.9 years, respectively. In HIV-positive patients, the mean duration of rehabilitation was 7.5-day shorter than HIV-negative patients. After receiving rehabilitation from a multidisciplinary team, the HIV-positive group improved with a mean of 40 points and the HIV-negative group improved with a mean of 38 points. The similarities in functional outcome between the HIV-positive and HIV-negative group were related to the fact that HIV-positive stroke survivors were relatively younger than the HIV-negative group.

Conclusion

Our study results show that patients who sustain a stroke, are HIV-positive, are receiving antiretroviral therapy and rehabilita- tion may recover similar to those who are HIV-negative, spending a similar length of stay in a rehabilitation clinic. Therefore, stroke survivors who are HIV-positive should receive full rehabilitation similar to any other stroke survivors.

A supervised exercise intervention fails to improve depressive symptoms and quality of life among sedentary older adults with HIV infection

Older people living with HIV (PLWH) experience multimorbidity that can negatively impact quality of life (QoL). Exercise can improve physical function, but effects on QoL are not well understood. 32 PLWH and 37 controls aged 50-75 completed 12-weeks of moderate-intensity exercise, then were randomized to moderate or high-intensity for 12 additional weeks. Depressive symptoms (CES-D scores) were significantly greater and QOL (SF-36 mental and physical summary scores) significantly lower among PLWH at baseline (all p < 0.05). PLWH had significantly greater worsening in CES-D scores compared to controls (3.4 [0.7, 6.0]; p = 0.01) between 13and 24 weeks. Mental QoL changed minimally, with no significant difference in changes by serostatus between weeks 0 and 12 or weeks 13 and 24 (p ≤ 0.22). Changes in physical function summary scores were similar by serostatus between 0 and 12 weeks (1.5 [-1.6, 4.6], p = 0.35), but declined significantly more among PLWH between 13 and 24 weeks (-4.1 [-7.2,-1], p = 0.01). Exercise intensity had no significant effect on changes in CES-D or SF-36 summary scores; high-intensity exercise was associated with greater improvements in vitality/fatigue (4.1 [0.8, 7.3], p = 0.02), compared to moderate-intensity. Exercise initiation failed to improve depressive symptoms or QoL among PLWH. Additional interventions may be needed to maximize these patient-reported outcomes among older PLWH initiating an exercise program.

Effect of 8 Weeks of Hospital-Based Resistance Training Program on TCD4+ Cell Count and Anthropometric Characteristic of Patients With HIV in Tehran, Iran: A Randomized Controlled Trial

Ghayomzadeh, M, SeyedAlinaghi, S, Shamsi, MM, Rezaei, S, Earnest, CP, Akbarnejad, S, Taj, L, Mohraz, M, Navalta, JW, Ghasemi, P, and Voltarelli, FA. Effect of 8 weeks of hospital-based resistance raining program on TCD4+ cell count and anthropometric characteristic of patients with HIV in Tehran, Iran: A randomized controlled trial. J Strength Cond Res 33(4): 1146-1155, 2019-We examined the effects of an 8-W circuit resistance training (RES) program using elastic bands and body weight on TCD4+ cell counts and anthropometry in patients with HIV. Patients (N = 21) receiving antiretroviral therapy were randomly assigned to resistance training (RES; n = 14) or control (CON; n = 7) groups. RES (3/W) consisted of training with elastic bands and bodyweight training focusing on major muscle groups. CON received standard care. Statistical analyses were performed using general linear models adjusted for age, sex, length of infection, and respective baseline measures. The primary outcome was TCD4+, and secondary outcomes were anthropometry indices. Tertiary assessments explored Pearson correlations surrounding the relationship between changes in anthropometry and TCD4+. We observed significant increases in TCD4+ count accompanying RES training (105.50 cells·mm, 95% confidence interval [CI], 47.42-163.59), whereas CON significantly decreased (-41.01 cells·mm, 95% CI, -126.78 to 44.76). Significant between-group differences were noted (p < 0.02; n = 0.42). We also observed significant reductions in fat mass for RES (1.18 kg, 95% CI = 1.80 to -0.56) vs. increased fat mass for CON (1.21 kg, 95% CI, 0.31 to 2.11). Significant between-group differences were noted (p = 0.001, n = 0.64). Similar effects were noted for lean body mass. No significant changes were observed for body mass. Significant correlations were observed for fat mass (r = -0.699, p = 0.001) and lean mass (r = 0.553, p = 0.017), but not body mass (r = -0.390, p = 0.109) vs. changes in TCD4+. Our results suggest that the RES program used in this study is effective for improving TCD4+ status and body composition in patients with HIV.

Perceived HIV-related physical fatigue, sociodemographic characteristics and physical activity: A cross-sectional study

AIMS AND OBJECTIVES

To get a deeper understanding of correlates of perceived HIV-related fatigue by exploring its associations with sociodemographic characteristics and physical activity level of HIV-infected people.

BACKGROUND

Previous studies on HIV-related fatigue have mainly focused on physiological and psychological characteristics, but few have considered its associations with sociodemographic variables. In addition, while physical activity has been found to reduce acute fatigue among HIV-infected people, its links with chronic HIV-related fatigue remain to be explored.

DESIGN

The study employed an observational and cross-sectional survey design. The manuscript was organised according to STROBE guidelines.

METHOD

A total of 560 people living with HIV in France completed a measure of perceived physical fatigue using the Fatigue Intensity Scale. The predictors targeted sociodemographic characteristics and two measures of individuals' reported level of physical activity. Data were analysed by a stepwise multiple regression model.

RESULTS

The results showed that lower age, higher physical activity level and socio-economic status were significantly associated with reduced perceived physical fatigue, explaining 25% of the variance.

CONCLUSIONS

The results highlighted the importance of considering sociodemographic and lifestyle characteristics to better characterise HIV-related fatigue, in particular in an era where HIV as a chronic illness challenges questions of quality of life throughout increasingly longer lifespans.

RELEVANCE TO CLINICAL PRACTICE

The results of this study have implications for HIV care professionals in terms of improving strategies for managing chronic fatigue or promoting physical activity according to more specific profiles of HIV-infected people.

The effect of a 12-week combinational exercise program on CD4 count and mental health among HIV infected women: A randomized control trial

BACKGROUND/OBJECTIVE

There are conflicting results regarding the effects of exercise on immune function of HIV positive patients. Exercise can also be beneficial to psychological functioning of the patients. The purpose of this study was to determine the impact of a 12-week aerobic and resistance exercise training program on mental health and CD4 counts among female HIV+ patients.

METHODS

This clinical trial was conducted between September and December 2013. Forty participants (women age range 20-40) were carefully selected from 240 HIV-positive women referred to Voluntary Counseling and Treatment Center (VCT) and randomly assigned to either exercise (80 min of aerobic and strength training while receiving the VCT's routine services) group (n = 20) or control (received the VCT's routine services only) group (n = 20). To assess their mental health status, all participants completed GHQ28 questionnaire. Blood samples were collected to measure CD4 and T-cell counts at baseline and at the end of the 12-week intervention.

RESULTS

From a sample of 40 women with HIV infection, the data of 30 participants [experimental group (14) and control group (16)] were analyzed (participation rate 75%). The results indicated that after the intervention program, a significant difference in CD4 cell counts was found between the two groups (P = 0.01). With regard to mental health, after performing intervention, significant improvement in all subscales including anxiety disorder, social function, depression and mental health's total score was observed in the exercise compared to the control groups (P < 0.001).

CONCLUSION

Exercise training can be included in health care services in order to improve the mental health status of women with HIV infection. No effect on CD4 count was detected.

Exercise Perception and Behaviors in Individuals Living with Primary Immunodeficiency Disease

BACKGROUND

Routine exercise has been established as an effective way to improve overall health. The value of exercise has been established in many diseases, however, there are no studies investigating the impact of exercise for individuals with primary immunodeficiency disease (PID). The purpose of this study was to investigate exercise perceptions and behaviors in individuals diagnosed with PID.

METHODS

An online survey was distributed over a four-week period.

RESULTS

Of the 264 responses collected, most were females, 45-54 years old. Respondents reported a measurable loss of function impairing their daily activities due to loss of mobility/physical activity (41.32%), or loss of lung/pulmonary function (40.08%,). They felt exercise decreased stress level and improved their mental well-being (46.25%). Some indicated they participate in exercise (33.20%), while 36.84% had not participated in exercise for at least 1 year. Exercise was limited primarily due to fatigue (86.97%).

CONCLUSION

Exercise is important for those with chronic medical conditions. Most individuals living with PID can participate in low/moderate physical activity, but struggle with vigorous physical activity, since fatigue is the greatest barrier. Respondents view exercise as beneficial, and would like to increase participation in an exercise program.

Evaluating the Effectiveness of Physical Exercise Interventions in Persons Living With HIV: Overview of Systematic Reviews

Physical exercise (PE) has not been well studied in persons living with HIV (PLHIV). We conducted an overview of systematic reviews to assess the effectiveness of PE and to determine the most appropriate PE regimen for PLHIV. We used the CDC's Prevention Research Synthesis Project's database and manual searches to identify systematic reviews published between 1996 and 2013. We qualitatively synthesized the findings from five reviews to assess the effectiveness of PE and conducted meta-analyses on CD4 counts to identify the best PE regimen. PE is associated with reduced adiposity and depression, but was not associated with a decrease in HIV viral load. CD4 counts were improved by interventions with interval aerobic or 41-50 minutes of exercise three times per week compared with other modes and duration of exercise. PE appears to benefit PLHIV, but more research is needed to help develop appropriate PE strategies specifically for PLHIV.

Effectiveness of Progressive Resistive Exercise (PRE) in the context of HIV: systematic review and meta-analysis using the Cochrane Collaboration protocol

Background

HIV is increasingly considered a chronic illness. More individuals are living longer and aging with the health-related consequences associated with HIV and multi-morbidity. Exercise is a self-management approach that can promote health for people aging with HIV. We examined the safety and effectiveness of progressive resistive exercise (PRE) interventions on immunological, virological, cardiorespiratory, strength, weight, body composition, and psychological outcomes in adults living with HIV.

Methods

We conducted a systematic review using the Cochrane Collaboration protocol. Searching databases up to April 2013, we included randomized controlled trials that compared PRE with no exercise or another intervention performed at least three times per week for at least four weeks with adults living with HIV. Two reviewers independently determined study eligibility. We extracted data from included studies and assessed risk of bias using the Cochrane Collaboration risk of bias tool. Meta-analyses were conducted using random effects models with Review Manager (RevMan) computer software.

Results

Twenty studies met inclusion criteria (n = 764 participants at study completion); the majority of participants were men (77%) taking antiretroviral therapy (14/20 included studies). Exercise interventions included PRE alone (8 studies) or a combination of resistive and aerobic exercise (12 studies) ranging from 6 to 52 weeks in duration. Thirty-four meta-analyses were performed. Results demonstrated statistically significant improvements in cardiorespiratory status (maximum oxygen consumption, exercise time), strength (chest press, knee flexion), weight, and body composition (arm and thigh girth, leg muscle area) among exercisers versus non-exercisers. We found no significant differences in change in CD4 count and viral load. We were unable to perform meta-analyses for psychological outcomes however results from individual studies demonstrated improvements in health-related quality of life with exercisers compared with non-exercisers.

Conclusions

Performing progressive resistive exercise (PRE) or a combination of resistive and aerobic exercise at least three times per week for at least six weeks is safe and can lead to improvements in cardiorespiratory fitness, strength, weight, and body composition for adults with HIV. Exercise may be considered a safe and beneficial for enhancing the health of medically stable adults aging with HIV.

Electronic supplementary material

The online version of this article (doi:10.1186/s12879-017-2342-8) contains supplementary material, which is available to authorized users.

High prevalence of physical inactivity among patients from the Swiss HIV Cohort Study

Physical activity (PA) can improve cardiorespiratory status, strength, body composition and quality of life for patients infected with HIV. Evidence from HIV-uninfected populations also shows that PA is associated with a lower risk of mortality, primarily death due to cardiovascular causes. There is, however, a lack of data on how physically active HIV-infected patients are. In this study, we assessed levels of self-reported PA over time in patients enrolled in the Swiss HIV Cohort Study, a large multicentre prospective observational cohort study. We included a total of 10,540 patients who completed at least one report of PA between December 2009 and November 2014 during routine clinical follow-up (scheduled every 6 months). In the first year after December 2009 there was a higher rate of non-response so these data are of a lesser reliability. Over the next four years, the percentage of patients reporting no free-time PA at all declined from 49% to 44%. In contrast, in two "Sport Switzerland" surveys of the general population in 2008 and 2014, the percentage of individuals reporting no sports activities at all was considerably lower and relatively stable over time (27% in 2008; 26% in 2014). In our analysis, the percentage of patients reporting sedentary activity at work increased from 23% to 26% over the four years. Subgroup findings suggest differences between women and men and between patients classified by their age, stage of infection and CD4 cell count. Integrating PA counselling into the routine care of HIV-infected patients and promoting PA among this population has the potential to improve the general state of health and quality of life for HIV-infected patients and reduce their risk of cardiovascular disease.

Effects of resistance training in HIV-infected patients: A meta-analysis of randomised controlled trials

The relative effects of resistance training (RT) upon muscle fitness and immune function among HIV-infected patients are uncertain. The purpose of this study was to perform a meta-analysis to determine the effects of RT upon muscle strength, muscle mass and CD4 cells count and to identify potential moderators of those outcomes in HIV-infected patients. Meta-analyses use random or fixed-effects model depending on the heterogeneity of effect sizes, complemented with Hedge's g correction factor. Thirteen trials were meta-analysed. Overall, RT increased muscle strength (35.5%, P < 0.01) and CD4 cell count (26.1%, P = 0.003) versus controls (P < 0.03), but not muscle mass (P = 0.051). Meta-regression followed by subgroup moderator analysis showed that gains in muscle strength followed a dose-response pattern with largest increase detected among trials with longer (24 weeks; 49.3%) than shorter intervention (<12 weeks; 39%), higher (Physiotherapy Evidence-Based Database [PEDro] scale = 6; 38.3%) than lower (PEDro = 5; 28.1%) quality, and longer (12 months; 59.7%) than shorter time under highly active antiretroviral therapy (HAART) (<6 months; 37.1%), (P < 0.01). RT appears to be efficacious to improve muscular strength (~35.5%) and CD4 cell count (~26.1%), but not muscle mass of HIV-infected patients. Effects upon strength were greater in studies with higher quality and among trials with longer RT and HAART.

Effectiveness of aerobic exercise for adults living with HIV: systematic review and meta-analysis using the Cochrane Collaboration protocol

BACKGROUND

People with HIV are living longer with the health-related consequences of HIV, multi-morbidity, and aging. Exercise is a key strategy that may improve or sustain health for people living with HIV. Our aim was to examine the safety and effectiveness of aerobic exercise interventions on immunological, virological, cardiorespiratory, strength, weight, body composition, and psychological outcomes in adults living with HIV.

METHODS

We conducted a systematic review using the Cochrane Collaboration protocol. We searched databases up to April 2013. We included randomized controlled trials comparing aerobic exercise with no exercise or another intervention performed at least three times per week for at least four weeks among adults living with HIV. Two reviewers independently determined study eligibility. Data were extracted from studies that met inclusion criteria using standardized forms. We assessed risk of bias using the Cochrane Collaboration's tool for assessing risk of bias. Outcomes were analyzed as continuous and meta-analyses conducted using random effects models with Review Manager (RevMan) computer software.

RESULTS

Twenty-four studies met inclusion criteria (n = 936 participants at study completion); the majority of participants were men (73 %) and the majority were taking antiretroviral therapy (19/24 included studies). The exercise intervention included aerobic exercise alone (11 studies) or a combination of aerobic and resistive exercise (13 studies) ranging from 5 to 52 weeks. Fifty-eight meta-analyses were performed. Main results indicated statistically significant improvements in selected outcomes of cardiorespiratory status (maximum oxygen consumption, exercise time), strength (chest press, knee flexion), body composition (lean body mass, percent body fat, leg muscle area), depression symptoms, and quality of life (SF-36 questionnaire) among exercisers compared with non-exercisers. No significant differences in change in CD4 count and viral load were found.

CONCLUSIONS

Performing aerobic exercise or a combination of aerobic and resistive exercise at least three times per week for at least five weeks is safe and can lead to improvements in cardiorespiratory fitness, strength, body composition and quality of life for adults with HIV. Aerobic exercise is safe and beneficial for adults living with HIV who are medically stable.

The effects of progressive-resisted exercises on muscle strength and health-related quality of life in persons with HIV-related poly-neuropathy in Zimbabwe

Distal symmetrical poly-neuropathy (DSP) is a neurological complication associated with HIV/AIDS and stavudine (d4T) containing antiretroviral therapy. People with DSP experience pain, numbness and muscle weakness, which affect their quality of life (QOL). The purpose of this study was to establish the effect of a progressive-resisted exercise (PRE) intervention on health-related quality of life (HR-QOL) in people living with HIV/AIDS-related DSP. An assessor-blinded randomised controlled trial was conducted, with participants sourced from 10 clinics with HIV services, the family care clinic at Wilkins Hospital and 2 large hospitals in Harare, Zimbabwe. A 12-week PRE intervention was conducted twice weekly for 80 participants, while the control group with 80 participants continued with usual daily activities. The main outcome variable was HR-QOL for which we controlled for demographic and clinical measures in generalised estimating equation population-averaged models. Data were summarised and analysed using an intention to treat analysis approach using the Stata v10 program. Mean age of participants was 42.2 years (SD = 8.5). While d4T was used by 59% (n = 94), an equal proportion of the participants also had moderate to severe neuropathy. PRE was found to significantly improve HR-QOL in the intervention group based on the mean difference between the intervention group mean change and the mean change in the control group (F ratio 4.24; p = .04). This study established that PREs have positive effects on HR-QOL for people living with HIV/AIDS-related DSP.

Effect of Aerobic Exercise on CD4 Cell Count and Lipid Profile of HIV Infected Persons in North Eastern Nigeria

Background:

Literature consistently shows dearth of published data from developing countries on effect of exercise on HIV infected persons.

Objective:

The study was aimed at determining effect of aerobic exercise on CD4 cell counts and lipid profile of HIV infected persons in Northeastern Nigeria.

Methods:

Sample of convenience was employed to enroll volunteer and willing 91 HIV infected persons attending antiretroviral clinic at a tertiary hospital in Northeastern Nigeria. Eighty two met the inclusion criteria and participated in the study. Participants were randomly assigned to experimental and control groups. Baseline values of the variables were determined. Experimental group participated in moderate intensity treadmill aerobic exercise for 12 weeks. Control group participated in weekly lectures on nutrition, adherence to therapy among others. At the end, the study recorded 22% attrition rate, leaving 32 participants in each group (64 participants in both). After the 12 weeks, the variables were re-evaluated. Descriptive statistic summarized the socio-demographic characteristics of the participants. Paired and unpaired Student t-tests analyzed the significant difference in mean values of the variables.

Results:

Mean ages in years of the 64 participants, the control and experimental groups were 39.57 ± 10.13, 39.38 ± 10.03 and 40.84 ± 10.05 respectively. There was significant improvement (p < 0.05) in the variables between pre- and post-tests in the experimental group. In the control group, there was either no significant change (p > 0.05) or significant deterioration (p < 0.05) in lipid profile between pre- and post-tests, while in CD4 cell counts, significant improvement was observed. Significant difference (p < 0.05) existed in the variables at the end of the study between both groups.

Conclusion:

CD4 cell counts and lipid profile of HIV infected persons who participated in the 12 weeks moderate intensity treadmill aerobic exercise significantly improved. Proper nutrition and adherence to antiretroviral therapy may enhance immune function in HIV population.

Effects of Combined Aerobic and Resistance Exercise on Exercise Capacity, Muscle Strength and Quality of Life in HIV-Infected Patients: A Systematic Review and Meta-Analysis

BACKGROUND

Many HIV-infected patients demonstrate disability and lower aerobic capacity. The inclusion of resistance training combined with aerobic exercise in a single program is known as combined aerobic and resistance exercise (CARE) and seems to be an effective strategy to improve muscle weakness, as well as aerobic capacity in HIV-infected patients. We performed a meta-analysis to investigate the effects of CARE in HIV-infected patients.

METHODS

We searched MEDLINE, Cochrane Controlled Trials Register, EMBASE, CINAHL (from the earliest date available to august 2014) for controlled trials that evaluated the effects of CARE in HIV-infected patients. Weighted mean differences (WMD) and 95% confidence intervals (CIs) were calculated, and heterogeneity was assessed using the I2 test.

RESULTS

Seven studies met the study criteria. CARE resulted in improvement in Peak VO2 WMD (4.48 mL·kg-1·min-1 95% CI: 2.95 to 6.0), muscle strength of the knee extensors WMD (25.06 Kg 95% CI: 10.46 to 39.66) and elbow flexors WMD (4.44 Kg 95% CI: 1.22 to 7.67) compared with no exercise group. The meta-analyses also showed significant improvement in Health status, Energy/Vitality and physical function domains of quality of life for participants in the CARE group compared with no exercise group. A nonsignificant improvement in social function domain of quality of life was found for participants in the CARE group compared with no exercise group.

CONCLUSIONS

Combined aerobic and resistance exercise may improve peak VO2, muscle strength and health status, energy and physical function domains of quality of life and should be considered as a component of care of HIV-infected individuals.

Physical activity and health outcomes among HIV-infected men who have sex with men: a longitudinal mediational analysis

BACKGROUND

Low physical activity is associated with depression, which may, in turn, negatively impact antiretroviral therapy (ART) adherence among HIV-infected individuals; however, prior studies have not investigated the relationships between physical inactivity and ART non-adherence.

PURPOSE

The purpose of this study was to examine the association of physical inactivity, depression, ART non-adherence, and viral load in HIV-infected men who have sex with men.

METHODS

The sample (N = 860) was from a large, multicenter cohort of HIV-infected patients engaged in clinical care.

RESULTS

Across time, depression mediated the relationship between physical inactivity and ART non-adherence (γ = 0.075) and the relationship between physical inactivity and viral load (γ = 0.05). ART non-adherence mediated the relationship between depression and viral load (γ = 0.002) and the relationship between physical inactivity and viral load (γ = 0.009).

CONCLUSIONS

Low levels of physical activity predicted increased depression and poor ART adherence over time, which subsequently predicted higher viral load.

The reliability of the modified lower extremity functional scale among adults living with HIV on antiretroviral therapy, in Rwanda, Africa

Peripheral neuropathy (PN) is common among people living with HIV (PLHIV) on antiretroviral therapy (ART), and affects their daily functional ability and quality of life. Lower extremity functional ability, which is most commonly compromised in patients with PN, has not been clearly evaluated in an African setting, with regard to functional limitations. The lower extremity functional scale (LEFS) was originally developed and validated among elderly people in the USA, where the environment and activities of daily life are very different from those in Rwanda. The purpose of this study was to adapt and establish the reliability of LEFS, among adults living with HIV on ART, in a Rwandan environment. The study translated LEFS from English to Kinyarwanda, the local language spoken in Rwanda, the LEFS was then modified accordingly, and tested for test-retest reliability among 50 adult PLHIV on ART. An average Spearman rank order correlation coefficient, ρ ≥ 0.7, was considered optimal for reliability. Prior to the modification of the LEFS and in the initial testing of the translated LEFS, none of the activities was strongly correlated (ρ ≥ 0.8); most of the activities (90%, 18/20) were moderately correlated (ρ ≥ 0.5) and 10% (2/20) were weakly correlated (ρ ≤ 0.5). The ρ of most of the functional activities improved after modification by an expert group to ρ ≥ 0.7, establishing reliability and validity of LEFS among PLHIV on ART with lower extremity functional limitations, in this environment. In conclusion, this study demonstrated the importance of modifying and establishing test - retest reliability of tools derived from developed world contexts to local conditions in developing countries, such as in Rwanda. The modified LEFS in this study can be used in Rwanda by clinicians, specifically at ART clinics to screen and identify people with functional limitations at an early stage of the limitations, for treatment, rehabilitation and/or referral to appropriate health care services.

Impacto do treinamento resistido na força e hipertrofia muscular em HIV-soropositivos

O presente estudo investigou o efeito de 24 semanas de treinamento resistido (TR) sobre a força e hipertrofia muscular de pacientes HIV-soropositivos. Participaram deste estudo 45 voluntários submetidos à terapia antirretroviral fortemente ativa (HAART), destes, 23 realizaram 3 sessões semanais, com 10 repetições a 80% 1RM. O teste de 1RM foi realizado de acordo com a metodologia proposta por Kraemer e Fry (1995), para estimativa da hipertrofia muscular adotou-se as equações de Frisancho (1984). Em comparação aos valores, o TR melhorou a força de 1RM nos exercícios de agachamento em 49% (21,0±4,9 vs. 31,2±5,1; P=0,001), supino reto em 13% (34,3±8,1 vs. 39,8±9,4; P=0,04), cadeira extensora em 34,1% (26,3±7,1 vs. 37,1±6,6; P=0,01), tríceps em 51% (22,9±4,0 vs. 38,3±4,9; P=0,001), pulley costas em 31,5% (31,7±3,9 vs. 41,7±4,4; P=0,01), cadeira flexora em 37,2% (18,9±3,4 vs. 27,3±3,2; P=0,01) e rosca bíceps em 60% (27,9±6,9 vs. 40,4±4,5; P=0,001). Não foram observadas diferenças (P<0,05) entre os valores basais e finais para o grupo controle. Observou-se aumento significativo (P<0,05) na área muscular do braço isenta de massa óssea, no grupo TR (52,8±14,5 cm²) em relação ao controle (39,5±12,4 cm²). Ademais, o TR resultou em significativa (P<0,05) redução da glicemia sanguínea de jejum (96,5±18,3 vs. 90,5±12,6), pressão arterial sistólica (126,3±14,3 vs. 120,0±10,0) e circunferência de cintura (83,0±12,5 vs. 80,6±10,2). Conclui-se que seis meses de TR resultaram em melhora na força e hipertrofia, ademais, o treinamento aplicado contribuiu para a regulação das variáveis metabólicas dos pacientes. Uma vez que a HAART é inevitável ao HIV-soropositivo, recomenda-se que o exercício físico seja realizado no intuito de dirimir os efeitos colaterais advindos desta terapia.

A systematic review of the effects of different types of therapeutic exercise on physiologic and functional measurements in patients with HIV/AIDS

Several studies have reported the benefits of exercise training for adults with HIV, although there is no consensus regarding the most efficient modalities. The aim of this study was to determine the effects of different types of exercise on physiologic and functional measurements in patients with HIV using a systematic strategy for searching randomized controlled trials. The sources used in this review were the Cochrane Library, EMBASE, MEDLINE, and PEDro from 1950 to August 2012. We selected randomized controlled trials examining the effects of exercise on body composition, muscle strength, aerobic capacity, and/or quality of life in adults with HIV. Two independent reviewers screened the abstracts using the Cochrane Collaboration's protocol. The PEDro score was used to evaluate methodological quality. In total, 29 studies fulfilled the inclusion criteria. Individual studies suggested that exercise training contributed to improvement of physiologic and functional parameters, but that the gains were specific to the type of exercise performed. Resistance exercise training improved outcomes related to body composition and muscle strength, with little impact on quality of life. Aerobic exercise training improved body composition and aerobic capacity. Concurrent training produced significant gains in all outcomes evaluated, although moderate intensity and a long duration were necessary. We concluded that exercise training was shown to be a safe and beneficial intervention in the treatment of patients with HIV.

Moderate-Intensity Exercise Improves Body Composition and Improves Physiological Markers of Stress in HIV-Infected Men

HIV/AIDS and its treatment often alter body composition and result in poorer physical functioning. The aim of this study was to determine the effects of a moderate-intensity exercise program on body composition and the hormones and cytokines associated with adverse health outcomes. HIV-infected males (N = 111) were randomized to an exercise group (EX) who completed 6 weeks of moderate-intensity exercise training, or to a nonintervention control group (CON). In pre- and postintervention, body composition was estimated via DXA, peak strength was assessed, and resting blood samples were obtained. There was a decrease in salivary cortisol at wake (P = 0.025) in the EX and a trend (P = 0.07) for a decrease 1 hour after waking. The EX had a significant increase in lean tissue mass (LTM) (P < 0.001) following the intervention. Those in the EX below median body fat (20%) increased LTM (P = 0.014) only, while those above 20% decreased fat mass (P = 0.02), total fat (N = 0.009), and trunk fat (P = 0.001), while also increasing LTM (P = 0.027). Peak strength increased between 14% and 28% on all exercises in the EX group. These data indicate that 6 weeks of moderate-intensity exercise training can decrease salivary cortisol levels, improve physical performance, and improve body composition in HIV-infected men.

Urban farming: a non-traditional intervention for HIV-related distress

As individuals with HIV are living longer with less morbidity, developing interventions that address co-morbidities are essential. Psychological distress symptoms fluctuate throughout HIV infection and interrupt self-care practices. This pilot study was conducted to test the implementation of a clinic-recruited sample to participate in a community-based urban farming intervention, and assess the efficacy of reducing psychological distress symptoms. While the changes were not statistically significant, participants reported less distress symptoms, improved overall general health, and reduced frequency of illicit drug use. These findings support the development of a larger scale study to examine the impact of this nontraditional intervention.

Sports behaviour among HIV-infected versus non-infected individuals in a Berlin cohort

Physical activity has been recommended based on beneficial effects described in HIV-infected patients. However, such guidelines do not take into account actual sport behaviours and general attitudes towards physical activity. To evaluate actual sport activity and attitudes towards sport in HIV-infected versus non-infected individuals we conducted an anonymous questionnaire investigating the prevalence, as well as possible changes, in sports engagement and the overall attitude to physical activity. A total of 283 patients of a general care facility specialized in the treatment of HIV/AIDS in Berlin, Germany, participated; 124 were HIV infected and 159 were non-infected, mostly men who have sex with men (MSM) (88%), with a median age of 35 years. The HIV-infected participants had a median CD4+ count of 554 cells/µL and 48.8% of them were using antiretroviral therapy (ART) at the time of survey. The proportion of patients actually performing physical activity was significantly lower (P = 0.028) within the HIV-infected group (61.3%) than within the non-infected group (74.2%). This difference remained significant after accounting for possible confounders such as age, gender, injecting drug use and sexual preferences. Previously reported sport activity prevalence was similar in both groups on leaving school. From our data we could not identify an association between the time of HIV diagnosis and changes in sports activity. In conclusion, fewer HIV-infected individuals report physical activity than non-infected individuals. Sociodemographic studies to evaluate potential differences in sports behaviour are required in order to inform exercise guidelines for HIV-infected patients.

Intervention to influence behaviors linked to risk of chronic diseases: a multisite randomized controlled trial with African-American HIV-serodiscordant heterosexual couples

BACKGROUND

The high morbidity and mortality in African Americans associated with behavior-linked chronic diseases are well documented.

METHODS

We tested the efficacy of an intervention to increase multiple health-related behaviors in African Americans. In a multisite cluster-randomized controlled trial, groups of African American human immunodeficiency virus (HIV)-serodiscordant heterosexual couples in Atlanta (Georgia), Los Angeles (California), New York (New York), and Philadelphia (Pennsylvania) were allocated to an individual-focused health promotion that addressed multiple health-related behaviors or to a couple-focused HIV/sexually transmitted disease (STD) risk reduction intervention. Primary outcomes were adherence to fruit and vegetable consumption and physical activity guidelines assessed preintervention, immediately postintervention, and 6 and 12 months postintervention. Secondary outcomes included fatty food consumption, prostate and breast cancer screening, and alcohol use. Generalized estimating equations tested the efficacy of the health promotion intervention over the postintervention assessments.

RESULTS

Health promotion intervention participants were more likely to report consuming 5 or more servings of fruits and vegetables daily (rate ratio [RR], 1.38; 95% confidence interval [CI], 1.18 to 1.62) and adhering to physical activity guidelines (1.39; 1.22 to 1.59) compared with HIV/STD intervention participants. In the health promotion intervention compared with the HIV/STD intervention, participants consumed fatty foods less frequently (mean difference, -0.18; 95% CI, -0.30 to -0.07), more men received prostate cancer screening (RR, 1.51; 95% CI, 1.21 to 1.88), and more women received a mammogram (RR, 1.26; 95% CI, 1.06 to 1.50). Alcohol use did not differ between the intervention groups.

CONCLUSION

This trial demonstrates the efficacy of interventions targeting multiple health-related behaviors in African American HIV-seropositive and HIV-seronegative men and women. Trial Registration clinicaltrials.gov Identifier: NCT00644163.

Aerobic exercise interventions for adults living with HIV/AIDS

BACKGROUND

Access to combination antiretroviral therapy has turned HIV into a chronic and manageable disease for many. This increased chronicity has been mirrored by increased prevalence of health-related challenges experienced by people living with HIV (Rusch 2004). Exercise is a key strategy for people living with HIV and by rehabilitation professionals to address these disablements; however, knowledge about the effects of exercise among adults living with HIV still is emerging.

OBJECTIVES

To examine the safety and effectiveness of aerobic exercise interventions on immunologic and virologic, cardiopulmonary, psychologic outcomes and strength, weight, and body composition in adults living with HIV.

SEARCH STRATEGY

Searches of MEDLINE, EMBASE, SCIENCE CITATION INDEX, CINAHL, HEALTHSTAR, PsycINFO, SPORTDISCUS and Cochrane Review Group Databases were conducted between 1980 and June 2009. Searches of published and unpublished abstracts and proceedings from major international and national HIV/AIDS conferences were conducted, as well as a handsearch of reference lists and tables of contents of relevant journals and books.

SELECTION CRITERIA

We included studies of randomised controlled trials (RCTs) comparing aerobic exercise interventions with no aerobic exercise interventions or another exercise or treatment modality, performed at least three times per week for at least four weeks among adults (18 years of age or older) living with HIV.

DATA COLLECTION AND ANALYSIS

Data on study design, participants, interventions, outcomes, and methodological quality were abstracted from included studies by two reviewers. Meta-analyses, using RevMan 5 computer software, were performed on outcomes when possible.

MAIN RESULTS

A total of 14 studies met inclusion criteria for this review and 30 meta-analyses over several updates were performed. Main results indicated that performing constant or interval aerobic exercise, or a combination of constant aerobic exercise and progressive resistive exercise for at least 20 minutes at least three times per week for at least five weeks appears to be safe and may lead to significant improvements in selected outcomes of cardiopulmonary fitness (maximum oxygen consumption), body composition (leg muscle area, percent body fat), and psychological status (depression-dejection symptoms). These findings are limited to participants who continued to exercise and for whom there were adequate follow-up data.

AUTHORS' CONCLUSIONS

Aerobic exercise appears to be safe and may be beneficial for adults living with HIV. These findings are limited by the small sample sizes and large withdrawal rates described in the studies. Future research would benefit from participant follow-up and intention-to-treat analysis. Further research is required to determine the optimal parameters in which aerobic exercise may be most beneficial for adults living with HIV.

Benefícios do treinamento aeróbio e/ou resistido em indivíduos HIV+: uma revisão sistemática

A aids é uma doença crônica, caracterizada pela depleção dos linfócitos T, sendo o vírus HIV o seu agente causador. A sua infecção e tratamento farmacológico estão ligados às alterações físicas e fisiológicas, que podem diminuir a qualidade de vida. Sendo assim, o objetivo do estudo foi elaborar uma revisão sistemática sobre os estudos publicados no PubMed e Capes entre 1998 e 2008, com humanos soropositivos e que investigaram os impactos do treinamento aeróbio e/ou resistido nos aspectos fisiológicos, metabólicos, psicológicos, imunológicos e físicos. Foram discutidos protocolos que utilizaram apenas treinamento de força ou aeróbio e os que utilizaram ambos e a grande maioria encontrou resultados favoráveis às variáveis pesquisadas. Quanto ao modelo de prescrição para essa população, este deve ser composto por exercícios de força, de oito a 15 repetições máximas (trabalho de hipertrofia) e por exercícios aeróbios (contínuo ou intervalado), com duração de 20 a 60 minutos e intensidade variando de 50 a 85% da frequência cardíaca máxima ou 45-85% do consumo máximo de oxigênio, ambos três a cinco vezes por semana. Dessa forma, ao elaborar um programa de atividade física, é importante conhecer a atual condição física e fisiológica do indivíduo HIV+, para que a sua condição de esforço não seja superestimada ou subestimada.

Impact of Aerobic and Resistance Exercise on the Health of HIV-Infected Persons

Individuals infected with HIV experience numerous comorbidities caused by the disease progression and medications, lack of (or inability to perform) physical activity, malnutrition, or a combination of these causes. Common symptoms include loss of muscle mass, fatigue, lypodystrophy, lypoatrophy, and decreases in strength, functional capacity, and overall quality of life. Studies have shown that exercise is a potential treatment of many of these symptoms. Research suggests that exercise may produce beneficial physiological changes in the HIV-infected population such as improved body composition and increases in both strength and endurance. In addition, psychological conditions such as depression and anxiety have been shown to be positively affected by exercise. The purpose of this review is to examine the literature regarding effects of aerobic, resistance, and combined aerobic and resistance exercise training on HIV-infected individuals.

Body mass index and nutritional intake in patients with HIV and chronic diarrhea: a secondary analysis

PURPOSE

The purpose of this study was to examine the differences in nutritional intake and body mass index (BMI) in HIV patients with chronic diarrhea via secondary analysis of patients' nutritional diaries. A secondary purpose was to evaluate the quality of diets against national dietary guidelines.

DATA SOURCES

Seventy-five ambulatory patients with HIV were included in this study. Patients were categorized using baseline BMI as normal weight (BMI 18.5-24.9 kg/m2), overweight (BMI 25.0-29.9 kg/m2), and obese (BMI >or=30.0 kg/m2). Seven-day nutritional diaries were used to estimate diet in terms of dietary fats, cholesterol, fiber, protein, and sugar. A one-way analysis of variance was conducted to evaluate the relationship between BMI and mean nutritional intake from fat, saturated fat, polyunsaturated fat, monounsaturated fat, cholesterol, fiber, and sugar.

CONCLUSIONS

39.7% and 13.3% of participants were overweight and obese, respectively. The mean intake of fat, saturated fat, and cholesterol was higher than the recommended levels by the National Cholesterol Education Program (NCEP), while the mean intake of monounsaturated fat, polyunsaturated fat, and fiber was below the NCEP guideline. Although the results were not statistically different between groups, grams of fiber intake were lowest for individuals with BMI >or=30.0 kg/m2.

IMPLICATIONS FOR PRACTICE

Advanced practice nurses should encourage increased physical activity and healthy diets at each visit for individuals living with HIV. The continued use of nutritional supplements to boost weight should also be reviewed at each visit to prevent the consumption of unnecessary calories.

Moderate intensity exercise training reverses functional aerobic impairment in HIV-infected individuals

HIV infection and HIV drug therapies result in physical and psychological challenges to those living with HIV. These conditions contribute to decreased functional aerobic capacity (FAC). The aim of this study was to determine the effects of a combined moderate-intensity aerobic and resistance exercise intervention on the FAC of HIV-infected individuals. Forty HIV-infected individuals were randomized to an exercise group (EX) who completed six weeks of moderate-intensity exercise training, or to a control group (CON) that did not receive the exercise intervention. Twice weekly, the EX group completed 30 minutes of moderate-intensity aerobic training followed by moderate-intensity resistance training. Prior to, and following, the intervention the FAC for each subject was determined by graded exercise treadmill stress test (GXT). At baseline testing, the mean FAC as determined by treadmill time-based estimation of maximal oxygen consumption was 25% below age-predicted values, a level of reduction indicating the presence of functional aerobic impairment (FAI). Following the intervention, the EX had a significant increase in time to fatigue and estimated VO(2) max (p<.001). Further, FAI was eliminated (1% above age predicted values) during the exercise training. The EX group also experienced decreased heart rates during Stages 1 (p=.02), 2 (p=.01), 4 (p=.05) and 6 (p=.02) of the GXT. The CON had no significant changes during the intervention period. These data indicate that six weeks of combined moderate-intensity aerobic and resistance training can improve FAC and eliminate FAI in those with HIV. Results suggest that the functional limitations common in HIV-infected individuals are due in part to detraining that is reversible through moderate exercise adherence.

Physical activity in a cohort of HIV-positive and HIV-negative injection drug users

Physical activity is beneficial for persons with HIV infection but little is known about the relationships between physical activity, HIV treatment and injection drug use (IDU). This study compared physical activity levels between HIV-negative and HIV-positive injection drug users (IDUs) and between HIV-positive participants not on any treatment and participants on highly active antiretroviral therapy (HAART). Anthropometric measurements were obtained and an interviewer-administered modified Paffenbarger physical activity questionnaire was administered to 324 participants in a sub-study of the AIDS Linked to Intravenous Experiences (ALIVE) cohort, an ongoing study of HIV-negative and HIV-positive IDUs. Generalized linear models were used to obtain univariate means and to adjust for confounding (age, gender, employment and recent IDU). Vigorous activity was lower among HAART participants than HIV-positive participants not on treatment (p=0.0025) and somewhat lower than HIV-negative participants (p=0.11). Injection drug use and viral load were not associated with vigorous activity. Energy expenditure in vigorous activity was also lower among HAART participants than both HIV-negative and HIV-positive participants not on treatment. Thus, HIV-positive participants on HAART spend less time on vigorous activity independent of recent IDU. More research is needed into the reasons and mechanism for the lack of vigorous activities, including behavioral, psychological and physiological reasons.

Counteracting muscle wasting in HIV-infected individuals

HIV-infected persons often experience a loss of lean tissue mass, which includes decreases in skeletal muscle mass. This HIV-associated wasting is significant because it has been associated with accelerated disease progression and increased morbidity. Signalling related to several circulating molecules, including tumour necrosis factor (TNF)-alpha, growth hormone, insulin-like growth factor (IGF)-1 and testosterone, has been associated with the aetiology of muscle wasting. Additionally, nutritional status related to malnutrition and specific dietary deficiencies may be involved. In an attempt to counter muscle wasting in HIV-infected persons, treatments have been suggested that target these mechanisms. Nutritional supplementation, cytokine reduction, hormone therapy and resistance exercise training are potential treatments for this condition. Resistance exercise training, which is more easily accessible to this population than other treatments, holds promise in counteracting the process of HIV wasting, as it has been successfully used to increase lean tissue mass in healthy and clinical populations. This review will explore the HIV/AIDS muscle-wasting syndrome, its aetiology, and the treatments used to counteract wasting.

Theories of fatigue: application in HIV/AIDS

A number of theoretical fatigue frameworks have been developed by nurse scientists with the intention of guiding research, practice, and education in fatigue. However, there is a significant gap between theory development and research utilization of fatigue frameworks in clinical and intervention trials. The purpose of this report is to assess an example of an inductive fatigue framework and a deductive symptom management model: The Integrated Fatigue Model (IFM) and the revised University of California, San Francisco, Symptom Management Model (UCSF-SMM), to investigate their potential to guide future nursing research projects on fatigue. The IFM is a fatigue-specific comprehensive framework of 14 biological and psychosocial patterns that influence signs and symptoms of fatigue and trigger six fatigue dimensions. The developers emphasized that patterns could be interrelated and influence the dimensionality of fatigue. The UCSF-SMM is a multidimensional symptom management model embedded within the three nursing domains: person, environment, and health and illness. The model places symptom perceptions, symptom management strategies, and outcomes within these nursing domains to be the key components of a highly complex symptom management process. The IFM is an important development in the understanding and conceptualization of fatigue in cancer and in HIV/AIDS. However, it does not reach the level of integration of the UCSF-SMM in taking fatigue research a significant step forward by integrating symptom impact, symptom management, and symptom outcomes. Both models have significant weaknesses because of their complexity.

Social support and maladaptive coping as predictors of the change in physical health symptoms among persons living with HIV/AIDS

This study examined social support and maladaptive coping as predictors of HIV-related health symptoms. Sixty-five men and women living with HIV/AIDS completed baseline measures assessing coping strategies, social support, and HIV-related health symptoms. The sample was primarily low-income and diverse with respect to gender, ethnicity, and sexual orientation. Three, 6, and 12 months after completing baseline assessments, physical health symptoms associated with HIV disease were assessed. After controlling for demographic characteristics, CD4 T-cell count, and baseline HIV-related health symptoms, individuals reporting lower increase in HIV-related health symptoms used less venting (expressing emotional distress) as a strategy for coping with HIV. However, when satisfaction with social support was added to the model, the use of this coping strategy was no longer significant, and individuals reporting more satisfying social support were more likely to report lower increase in their HIV-related health symptoms, suggesting that social support is a robust predictor of health outcomes over time independent of coping style and baseline medical status. These findings provide further evidence that social support can buffer deleterious health outcomes among individuals with a chronic illness. Future research needs to examine mediating pathways that can explain this relationship.

Rehabilitation in HIV/AIDS: development of an expanded conceptual framework

In industrialized countries where HIV infection is becoming a chronic, episodic condition, rehabilitation services have the potential to play an expanded role for people living with HIV/AIDS (PLHAs). However, little is known about rehabilitation in the context of HIV. This paper documents the development of an enhanced, multidisciplinary conceptual framework of rehabilitation in the context of HIV, using the perceptions of PLHAs and rehabilitation professionals. Rehabilitation, broadly defined, is a dynamic process that includes all prevention and/or treatment activities and/or services that address body impairments, activity limitations and participation restrictions for an individual. The framework was developed through broad consultation and interviews with thirteen key informants. Themes that emerged from analysis of interviews related to concepts of rehabilitation in the context of HIV, rehabilitation professionals' roles in the context of HIV, and barriers to access and delivery of rehabilitation services. While there was some variation, key informants generally viewed rehabilitation as a goal-oriented and client-centered process with the potential to impact a range of life domains. Themes were presented to members of a national advisory committee (including PLHAs and health care providers), who produced the foundation of the HIV rehabilitation framework. The framework uses the perspective of the person living with HIV/AIDS, and includes individual life domains that may be affected by HIV, drawing and expanding upon the World Health Organization's (WHO's) International Classification of Functioning, Disability and Health.