Lifestyle Interventions, Kidney Disease Progression, and Quality of Life: A Systematic Review and Meta-analysis

The effect of exercise training in people with pre-dialysis chronic kidney disease: a systematic review with meta-analysis

BACKGROUND

Chronic kidney disease (CKD) is a global health issue with high mortality and economic costs. Exercise has potential benefits for pre-dialysis CKD management. This review examines the impact of exercise on CKD patients not on dialysis, focusing on improvement in various health parameters. Findings aim to inform the role of exercise in pre-dialysis CKD care.

METHODS

A systematic search of MEDLINE, EMBASE, the Cochrane Library of Controlled Trials, CINAHL, and SPORTDiscus, up to August 31, 2023, used key terms relating to pre-dialysis CKD and exercise. We pooled randomized controlled trials (RCTs) comparing exercise with usual care and conducted meta-analyses based on a random effects inverse variance model with the effect measure of mean difference.

RESULTS

Of 1162 identified studies, 37 RCTs met the inclusion criteria including 1248 participants. Significant improvements were identified for peak VO2, mean difference [MD] (2.66 mL/kg/min; 95% confidence interval [CI] 1.48, 3.83; p < 0.00001); the 6-min walk (MD 58.83 m; 95% CI 35.26, 82.41; p < 0.00001), timed up and go (standardised mean difference - 0.35; 95% CI - 0.54, - 0.15; p = 0.0006), 2-min step (MD 57.48 steps; 95% CI 27.80, 87.16; p = 0.0001), and sit to stand tests (MD 4.55 repetitions; 95% CI 1.49, 7.60; p = 0.004); short form [SF]-36 general health (MD 4.26; 95% CI 0.04, 8.47; p = 0.05); SF-36 mental component summary (MD 1.84; 95% CI 0.18, 3.51; p = 0.03); estimated glomerular filtration rate (MD 2.19 mL/min/1.73 m2; 95% CI 0.97, 3.50; p = 0.001); serum cystatin-C (MD - 0.06 mg/L; 95% CI - 0.11, - 0.02; p = 0.004); resting heart rate (MD - 1.97 bpm; 95% CI - 3.84, - 0.11; p = 0.04); triglycerides (MD - 12.97mg/dL; 95% CI - 17.30, - 8.63; p < 0.00001); glycosylated haemoglobin (MD - 0.25%; 95% CI - 0.50, - 0.01; p = 0.04); waist circumference (MD - 3.12 cm; 95% CI - 4.37, - 1.86; p < 0.00001); and interleukin-6 (MD - 2.24 pg/mL; 95% CI - 3.87. - 0.61; p = 0.007).

CONCLUSIONS

Analysis revealed improvements in aerobic capacity, functional ability, quality of life, estimated glomerular filtration rate, serum cystatin-C, resting heart rate, waist circumference, triglyceride, glycosylated haemoglobin, and interleukin-6 levels.

Preferences of people with chronic kidney disease regarding digital health interventions that promote healthy lifestyle: qualitative systematic review with meta-ethnography

OBJECTIVES

Diet and physical activity are crucial for people with chronic kidney disease (CKD) to maintain good health. Digital health interventions can increase access to lifestyle services. However, consumers' perspectives are unclear, which may reduce the capacity to develop interventions that align with specific needs and preferences. Therefore, this review aims to synthesise the preferences of people with CKD regarding digital health interventions that promote healthy lifestyle.

DESIGN

Qualitative systematic review with meta-ethnography.

DATA SOURCES

Databases Scopus, CENTRAL, MEDLINE, CINAHL and SPORTDiscus were searched between 2000 and 2023.

ELIGIBILITY CRITERIA

Primary research papers that used qualitative exploration methods to explore the preferences of adults with CKD (≥18 years) regarding digital health interventions that promoted diet, physical activity or a combination of these health behaviours.

DATA EXTRACTION AND SYNTHESIS

Two independent reviewers screened title, abstract and full text. Discrepancies were resolved by a third reviewer. Consumers' quotes were extracted verbatim and synthesised into higher-order themes and subthemes.

RESULTS

Database search yielded 5761 records. One record was identified following communication with a primary author. 15 papers were included. These papers comprised 197 consumers (mean age 51.0±7.2), including 83 people with CKD 1-5; 61 kidney transplant recipients; 53 people on dialysis. Sex was reported in 182 people, including 53% male. Five themes were generated regarding consumers' preferences for digital lifestyle interventions. These included simple instruction and engaging design; individualised interventions; virtual communities of care; education and action plans; and timely reminders and automated behavioural monitoring.

CONCLUSION

Digital health interventions were considered an important mechanism to access lifestyle services. Consumers' preferences are important to ensure future interventions are tailored to specific needs and goals. Future research may consider applying the conceptual framework of consumers' preferences in this review to develop and evaluate the effect of a digital lifestyle intervention on health outcomes.

PROSPERO REGISTRATION NUMBER

CRD42023411511.

The 10-Year Effects of Intensive Lifestyle Intervention on Kidney Outcomes

Rationale & Objective

Limited data exist on longitudinal kidney outcomes after nonsurgical obesity treatments. We investigated the effects of intensive lifestyle intervention on kidney function over 10 years.

Study Design

Post hoc analysis of Action for Health in Diabetes (Look AHEAD) randomized controlled trial.

Setting & Participants

We studied 4,901 individuals with type 2 diabetes and body mass index of ≥25 kg/m2 enrolled in Look AHEAD (2001-2015). The original Look AHEAD trial excluded individuals with 4+ urine dipstick protein, serum creatinine level of >1.4 mg/dL (women), 1.5 mg/dL (men), or dialysis dependence.

Exposures

Intensive lifestyle intervention versus diabetes support and education (ie, usual care).

Outcome

Primary outcome was estimated glomerular filtration rate (eGFR, mL/min/1.73 m2) slope. Secondary outcomes were mean eGFR, slope, and mean urine albumin to creatinine ratio (UACR, mg/mg).

Analytical Approach

Linear mixed-effects models with random slopes and intercepts to evaluate the association between randomization arms and within-individual repeated measures of eGFR and UACR. We tested for effect modification by baseline eGFR.

Results

At baseline, mean eGFR was 89, and 83% had a normal UACR. Over 10 years, there was no difference in eGFR slope (+0.064 per year; 95% CI: -0.036 to 0.16; P = 0.21) between arms. Slope or mean UACR did not differ between arms. Baseline eGFR, categorized as eGFR of <80, 80-100, or >100, did not modify the intervention's effect on eGFR slope or mean.

Limitations

Loss of muscle may confound creatinine-based eGFR.

Conclusions

In patients with type 2 diabetes and preserved kidney function, intensive lifestyle intervention did not change eGFR slope over 10 years. Among participants with baseline eGFR <80, lifestyle intervention had a slightly higher longitudinal mean eGFR than usual care. Further studies evaluating the effects of intensive lifestyle intervention in people with kidney disease are needed.

Underlying Mechanisms and Treatment of Hypertension in Glomerular Diseases

PURPOSE OF REVIEW

This review aims to explore the underlying mechanisms that lead to hypertension in glomerular diseases and the advancements in treatment strategies and to provide clinicians with valuable insights into the pathophysiological mechanisms and evidence-based therapeutic approaches for managing hypertension in patients with glomerular diseases.

RECENT FINDINGS

In recent years, there have been remarkable advancements in our understanding of the immune and non-immune mechanisms that are involved in the pathogenesis of hypertension in glomerular diseases. Furthermore, this review will encompass the latest data on management strategies, including RAAS inhibition, endothelin receptor blockers, SGLT2 inhibitors, and immune-based therapies. Hypertension (HTN) and cardiovascular diseases are leading causes of mortality in glomerular diseases. The latter are intricately related with hypertension and share common pathophysiological mechanisms. Hypertension in glomerular disease represents a complex and multifaceted interplay between kidney dysfunction, immune-mediated, and non-immune-mediated pathology. Understanding the complex mechanisms involved in this relationship has evolved significantly over the years, shedding light on the pathophysiological processes underlying the development and progression of glomerular disease-associated HTN, and is crucial for developing effective therapeutic strategies and improving patients' outcomes.