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Zhao M, Xiao M, Tan Q, Lyu J, Lu F. The effect of aerobic exercise on oxidative stress in patients with chronic kidney disease: a systematic review and meta-analysis with trial sequential analysis. Ren Fail 2023; 45:2252093. [PMID: 37753870 PMCID: PMC10538458 DOI: 10.1080/0886022x.2023.2252093] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/21/2023] [Indexed: 09/28/2023] Open
Abstract
PURPOSE The purpose of this study was to investigate how aerobic exercise affects oxidative stress (OS) in patients with chronic kidney disease (CKD). METHODS Retrieval dates range from the date the database was established to 19 July 2023, without languages being restricted. A meta-analysis and sensitivity analysis were conducted using RevMan 5.3 and Stata 16.0. RESULTS The meta-analysis showed that, compared to usual activity or no exercise, aerobic exercise significantly reduced the oxidative markers malondialdehyde (MDA) (mean differences (MD) - 0.96 (95% CI -1.33, - 0.59); p < 0.00001), advanced oxidation protein product (AOPP) (MD - 3.49 (95% CI - 5.05, - 1.93); p < 0.00001), F2-isoprostanes (F2-iso) (MD - 11.02 (95% CI - 17.79, - 4.25); p = 0.001). Aerobic exercise also increased the antioxidant marker superoxide dismutase (SOD) in CKD patients (standardized mean differences (SMD) 1.30 (95% CI 0.56, 2.04); p = 0.0005). Subgroup analysis showed a significant increase in glutathione peroxidase (GPX) in patients aged ≥60 years (SMD 2.11 (95% CI 1.69, 2.54); p < 0.00001). The change in total antioxidant capacity (TAC) after aerobic exercise was insignificant in patients with CKD. The trial sequential analysis supported aerobic exercise's effectiveness in improving MDA, SOD, AOPP, and F2-iso in patients with CKD. CONCLUSION The results of this review suggest that aerobic exercise improves OS indicators (MDA, SOD, AOPP, and F2-iso) in CKD patients compared to conventional treatment or no exercise and that the effects on GPX and TAC indicators need further confirmation. For better validation of benefits and exploration of the best aerobic exercise regimen to improve OS status with CKD, further studies with high methodological quality and large sample sizes are needed.
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Affiliation(s)
- Mengjie Zhao
- Graduate School of Beijing University of Chinese Medicine, Beijing, P.R. China
- NMPA Key Laboratory for Clinical Research and Evaluation of Traditional Chinese Medicine, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
| | - Mengli Xiao
- NMPA Key Laboratory for Clinical Research and Evaluation of Traditional Chinese Medicine, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
| | - Qin Tan
- NMPA Key Laboratory for Clinical Research and Evaluation of Traditional Chinese Medicine, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
| | - Jian Lyu
- NMPA Key Laboratory for Clinical Research and Evaluation of Traditional Chinese Medicine, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
| | - Fang Lu
- NMPA Key Laboratory for Clinical Research and Evaluation of Traditional Chinese Medicine, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medicine Sciences, Beijing, P.R. China
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Arazi H, Mohabbat M, Saidie P, Falahati A, Suzuki K. Effects of Different Types of Exercise on Kidney Diseases. Sports (Basel) 2022; 10:sports10030042. [PMID: 35324651 PMCID: PMC8952011 DOI: 10.3390/sports10030042] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/26/2022] [Accepted: 03/07/2022] [Indexed: 11/17/2022] Open
Abstract
The effects of exercise on kidney function have been studied for more than three decades. One of the most common health issues among patients with chronic kidney disease (CKD) is a lack of physical activity, which leads to a low exercise capacity in these patients. The majority of maintenance hemodialysis (MHD) patients do not exercise at all. At each stage of dialysis, patients lose 10–12 g of their amino acids through blood sampling. Dialysis also leads to increased cortisol and circadian rhythm sleep disorders in hemodialysis (HD) patients. Studies have also reported higher C-reactive protein levels in HD patients, which causes arterial stiffness. Exercise has a variety of health benefits in these patients, including improved blood pressure control, better sleep, higher physical function, and reduced anxiety and depression. On the other hand, it should be noted that intense exercise has the potential to progress KD, especially when conducted in hot weather with dehydration. This review aimed to investigate the effects of different types of exercise on kidney disease and provide exercise guidelines. In conclusion, moderate-intensity and long-term exercise (for at least a 6-month period), with consideration of the principles of exercise (individualization, intensity, time, etc.), can be used as an adjunctive treatment strategy in patients undergoing dialysis or kidney transplantation.
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Affiliation(s)
- Hamid Arazi
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht 4199843653, Iran; (M.M.); (P.S.); (A.F.)
- Correspondence: (H.A.); (K.S.); Tel.: +98-911-139-9207 (H.A.)
| | - Majid Mohabbat
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht 4199843653, Iran; (M.M.); (P.S.); (A.F.)
| | - Payam Saidie
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht 4199843653, Iran; (M.M.); (P.S.); (A.F.)
| | - Akram Falahati
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht 4199843653, Iran; (M.M.); (P.S.); (A.F.)
| | - Katsuhiko Suzuki
- Faculty of Sport Sciences, Waseda University, Tokorozawa 359-1192, Japan
- Correspondence: (H.A.); (K.S.); Tel.: +98-911-139-9207 (H.A.)
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Meléndez-Oliva E, Sánchez-Vera Gómez-Trelles I, Segura-Orti E, Pérez-Domínguez B, García-Maset R, García-Testal A, Lavandera-Díaz JL. Effect of an aerobic and strength exercise combined program on oxidative stress and inflammatory biomarkers in patients undergoing hemodialysis: a single blind randomized controlled trial. Int Urol Nephrol 2022; 54:2393-2405. [PMID: 35199237 DOI: 10.1007/s11255-022-03146-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 02/09/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Chronic kidney disease patients on hemodialysis treatment are characterized by increased levels of inflammatory markers and oxidative stress, in addition to a significant deterioration in physical function. The benefits of physical exercise on the functional capacity of this patients are well known; however, it can also improve the endogenous antioxidant defense system and the inflammatory state, but still very few studies have been carried out. This is the first study to analyze the effect of a 4-month exercise program with combined aerobic and strength training in patients undergoing hemodialysis, under two modalities. METHODS Seventy-one patients undergoing hemodialysis were enrolled and randomized in two groups, one of them performing an intra-dialysis exercise program (n = 36), and the other carrying out a home-based exercise program (n = 35). Serum levels of oxidative stress and inflammation biomarkers were determined before and after the intervention. RESULTS IL-6 plasma levels showed a significant decrease in the intra-dialysis group after exercise (42.61 ± 9.21 to 26.40 ± 7.84, p = 0.03), while CRP levels decreased significantly in the home-based group (16.12 ± 24.18 to 8.50 ± 11.28, p = 0.03). MCP-1, TNF-α, ICAM-1 and the oxidative stress markers MDA, GSH and GSSG, did not undergo significant changes after the intervention. CONCLUSION Four months of combined strength and aerobic endurance exercise improve the inflammatory status of hemodialysis patients by significantly reducing IL-6 levels in those subjects who perform intra-dialysis exercise and CRP levels in those who do it at home.
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Affiliation(s)
- Erika Meléndez-Oliva
- Department of Biomedical Sciences, Universidad CEU Cardenal Herrera, CEU Universities, Elche, Spain.
| | | | - Eva Segura-Orti
- Department of Physiotherapy, Universidad CEU Cardenal Herrera, CEU Universities, Valencia, Spain
| | - Borja Pérez-Domínguez
- Department of Physiotherapy, Universidad CEU Cardenal Herrera, CEU Universities, Valencia, Spain
| | | | | | - Jose Luis Lavandera-Díaz
- Department of Basic Medical Sciences. Medical School, Universidad CEU San Pablo, CEU Universities, Madrid, Spain.
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Bernier-Jean A, Beruni NA, Bondonno NP, Williams G, Teixeira-Pinto A, Craig JC, Wong G. Exercise training for adults undergoing maintenance dialysis. Cochrane Database Syst Rev 2022; 1:CD014653. [PMID: 35018639 PMCID: PMC8752366 DOI: 10.1002/14651858.cd014653] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Dialysis treatments weigh heavily on patients' physical and psychosocial health. Multiple studies have assessed the potential for exercise training to improve outcomes in adults undergoing dialysis. However, uncertainties exist in its relevance and sustainable benefits for patient-important outcomes. This is an update of a review first published in 2011. OBJECTIVES To assess the benefits and safety of regular structured exercise training in adults undergoing dialysis on patient-important outcomes including death, cardiovascular events, fatigue, functional capacity, pain, and depression. We also aimed to define the optimal prescription of exercise in adults undergoing dialysis. SEARCH METHODS In this update, we conducted a systematic search of the Cochrane Kidney and Transplant Register of Studies up to 23 December 2020. The Register includes studies identified from CENTRAL, MEDLINE, EMBASE, the International Clinical Trials Register (ICTRP) Search Portal and ClinicalTrials.gov as well as kidney-related journals and the proceedings of major kidney conferences. SELECTION CRITERIA Randomised controlled trials (RCTs) and quasi-RCTs of any structured exercise programs of eight weeks or more in adults undergoing maintenance dialysis compared to no exercise or sham exercise. DATA COLLECTION AND ANALYSIS Two authors independently assessed the search results for eligibility, extracted the data and assessed the risk of bias using the Cochrane risk of bias tool. Whenever appropriate, we performed random-effects meta-analyses of the mean difference in outcomes. The primary outcomes were death (any cause), cardiovascular events and fatigue. Secondary outcomes were health-related quality of life (HRQoL), depression, pain, functional capacity, blood pressure, adherence to the exercise program, and intervention-related adverse events. MAIN RESULTS We identified 89 studies involving 4291 randomised participants, of which 77 studies (3846 participants) contributed to the meta-analyses. Seven studies included adults undergoing peritoneal dialysis. Fifty-six studies reported aerobic exercise interventions, 21 resistance exercise interventions and 19 combined aerobic and resistance training within the same study arm. The interventions lasted from eight weeks to two years and most often took place thrice weekly during dialysis treatments. A single study reported death and no study reported long-term cardiovascular events. Five studies directly assessed fatigue, 46 reported HRQoL and 16 reported fatigue or pain through their assessment of HRQoL. Thirty-five studies assessed functional capacity, and 21 reported resting peripheral blood pressure. Twelve studies reported adherence to exercise sessions, and nine reported exercise-related adverse events. Overall, the quality of the included studies was low and blinding of the participants was generally not feasible due to the nature of the intervention. Exercise had uncertain effects on death, cardiovascular events, and the mental component of HRQoL due to the very low certainty of evidence. Compared with sham or no exercise, exercise training for two to 12 months may improve fatigue in adults undergoing dialysis, however, a meta-analysis could not be conducted. Any exercise training for two to 12 months may improve the physical component of HRQoL (17 studies, 656 participants: MD 4.12, 95% CI 1.88 to 6.37 points on 100 points-scale; I² = 49%; low certainty evidence). Any exercise training for two to 12 months probably improves depressive symptoms (10 studies, 441 participants: SMD -0.65, 95% CI -1.07 to -0.22; I² = 77%; moderate certainty evidence) and the magnitude of the effect may be greater when maintaining the exercise beyond four months (6 studies, 311 participants: SMD -0.30, 95% CI 0.14 to -0.74; I² = 71%). Any exercise training for three to 12 months may improve pain (15 studies, 872 participants: MD 5.28 95% CI -0.12 to 10.69 points on 100 points-scale; I² = 63%: low certainty evidence) however, the 95% CI indicates that exercise training may make little or no difference in the level of pain. Any exercise training for two to six months probably improves functional capacity as it increased the distance reached during six minutes of walking (19 studies, 827 participants: MD 49.91 metres, 95% CI 37.22 to 62.59; I² = 34%; moderate certainty evidence) and the number of sit-to-stand cycles performed in 30 seconds (MD 2.33 cycles, 95% CI 1.71 to 2.96; moderate certainty evidence). There was insufficient evidence to assess the safety of exercise training for adults undergoing maintenance dialysis. The results were similar for aerobic exercise, resistance exercise, and a combination of both aerobic and resistance exercise. AUTHORS' CONCLUSIONS It is uncertain whether exercise training improves death, cardiovascular events, or the mental component of HRQoL in adults undergoing maintenance dialysis. Exercise training probably improves depressive symptoms, particularly when the intervention is maintained beyond four months. Exercise training is also likely to improve functional capacity. Low certainty evidence suggested that exercise training may improve fatigue, the physical component of quality of life, and pain. The safety of exercise training for adults undergoing dialysis remains uncertain.
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Affiliation(s)
- Amelie Bernier-Jean
- School of Public Health, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Nadim A Beruni
- Resident Support Unit, Western Sydney Local Health District, Westmead, Australia
| | - Nicola P Bondonno
- School of Biomedical Sciences, The University of Western Australia, Royal Perth Hospital, Perth, Australia
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
| | - Gabrielle Williams
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | | | - Jonathan C Craig
- College of Medicine and Public Health, Flinders University, Adelaide, Australia
- Cochrane Kidney and Transplant, Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Germaine Wong
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
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Effect of blood volume change related to intensity of intradialytic aerobic exercise on hemodialysis adequacy: a pilot study. Int Urol Nephrol 2021; 54:1427-1434. [PMID: 34665412 DOI: 10.1007/s11255-021-03038-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 10/11/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE Intradialytic exercise may improve dialysis efficiency; however, the association between changes in blood volume (BV) related to exercise intensity and solute removal kinetics remains unknown. We herein investigated the relationship between changes in BV with exercise and removal of solute molecules during hemodialysis. METHODS Each of the 21 hemodialysis patients underwent cardiopulmonary exercise test to measure anaerobic threshold (AT). According to the exercise intensity, patients were classified into two groups, the low group (n = 12), whose intensity was below the AT, and the high group (n = 9), whose intensity was at the AT level. Each patient completed two trial arms of resting and discontinuous exercise dialysis sessions in a randomized manner. RESULTS The change in BV with the exercise dialysis session in the high group decreased during exercise (p = 0.028) and remained decreased after exercise (p = 0.016), compared with the low group. In the low group, compared with routine sessions, the removal of potassium (p = 0.030), phosphate (p = 0.024), and urea nitrogen (p = 0.065) increased during exercise, but the total removal of these solutes did not change. In the high group, the removal of phosphate (p < 0.001) and urea nitrogen (p = 0.018) after exercise and even total phosphate (p = 0.027) decreased. CONCLUSION These findings suggest that the removal of small solute molecules is improved during exercise in intradialytic low-intensity exercise with no change in BV, and decreased after exercise in high-intensity exercise with a decrease in BV. CLINICAL TRIALS REGISTRY Trial retrospectively registered at the UMIN Clinical Trials Registry: study number UMIN000038629 (Registration date: September 7, 2019).
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de Brito JS, Vargas D, da Silva GS, Marinho S, Borges NA, Cardozo LFMF, Fonseca L, Ribeiro M, Chermut TR, Moura M, Regis B, Meireles T, Nakao LS, Mafra D. Uremic toxins levels from the gut microbiota seem not to be altered by physical exercise in hemodialysis patients. Int Urol Nephrol 2021; 54:687-693. [PMID: 34254218 DOI: 10.1007/s11255-021-02945-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 07/06/2021] [Indexed: 12/25/2022]
Abstract
PURPOSE Regular physical exercise may result in many benefits to patients with chronic kidney disease (CKD) on hemodialysis (HD), including gut microbiota modulation and solute removal. The study aimed to evaluate the effects of two programs of intradialytic exercises on uremic toxins plasma levels in HD patients. METHODS In experiment 1, twenty HD patients [12 men, 44.1 ± 8.9 years, BMI of 23.4 ± 2.4 kg/m2] were randomized into two groups: Aerobic exercise group (AEG, n = 11) that performed aerobic exercise on an adapted exercise bike three times a week for three months (36 sessions) and Control group (CG, n = 9). In experiment 2, twenty-six HD patients [19 men, 47.6 ± 11.0 years, BMI of 25.9 ± 3.6 kg/m2] were randomized into Resistance exercise group (REG, n = 14) that performed a resistance exercise program (using elastic bands and ankle cuffs with both lower limbs) monitored three times a week, during six months (72 sessions) and CG (n = 12). P-cresyl sulfate (p-CS), indoxyl sulfate (IS), and indol-3-acetic acid (IAA) plasma levels were determined by high-performance liquid chromatography (HPLC) with fluorescent detection. RESULTS The uremic toxins plasma levels did not reduce in both exercise programs, aerobic exercise (IS: 32.7 ± 14.0 vs 33.0 ± 15.4 mg/L, p = 0.86; p-CS: 59.9 ± 39.3 vs 60.0 ± 41.2 mg/L, p = 0.99; IAA: 2233 [1488-2848] vs 2227 [1275-2824] µg/L, p = 0.72) and resistance exercise (IS: 28.3 ± 11.3 vs 29.1 ± 9.7 mg/L, p = 0.77; p-CS: 31.4 ± 21.3 vs 34.2 ± 19.8 mg/L, p = 0.63; IAA: 1628 [1330-3530] vs 2000 [971-3085] µg/L, p = 0.35) in HD patients. CONCLUSION According to our findings, physical exercise does not appear to alter the levels of uremic toxins produced by the gut microbiota in HD patients.
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Affiliation(s)
- Jessyca Sousa de Brito
- Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Drielly Vargas
- Division of Nephrology, Graduate Program in Medical Clinic, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | - Sandra Marinho
- Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Natália Alvarenga Borges
- State University of Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Ludmila F M F Cardozo
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
- Clinical Research Unit, Antônio Pedro Hospital, Fluminense Federal University, Rua Marquês de Paraná, 303/4 andar, Niterói-RJ, 24033-900, Brazil
| | - Larissa Fonseca
- Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Marcia Ribeiro
- Graduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Tuany Ramos Chermut
- Graduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | - Mariana Moura
- Clinical Research Unit, Antônio Pedro Hospital, Fluminense Federal University, Rua Marquês de Paraná, 303/4 andar, Niterói-RJ, 24033-900, Brazil
| | - Bruna Regis
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil
| | | | - Lia S Nakao
- Federal University of Paraná, Curitiba, PR, Brazil
| | - Denise Mafra
- Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil.
- Graduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil.
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói-RJ, Brazil.
- Clinical Research Unit, Antônio Pedro Hospital, Fluminense Federal University, Rua Marquês de Paraná, 303/4 andar, Niterói-RJ, 24033-900, Brazil.
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Traditional Chinese exercise potential role as prevention and adjuvant therapy in patients with COVID-19. Complement Ther Clin Pract 2021; 43:101379. [PMID: 33839522 PMCID: PMC8017910 DOI: 10.1016/j.ctcp.2021.101379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/07/2021] [Accepted: 03/27/2021] [Indexed: 01/17/2023]
Abstract
The epidemic situation of COVID-19 is a great public health emergency worldwide characterized by fastest spreading, widest infection range and the mostly difficult to prevent and control in recent years. According to medical experience, traditional Chinese exercises (TCE) have been applied for COVID-19 prevention, adjuvant treatment or rehabilitation, and achieved some curative effects. They can enhance the body immunity, improve the function of organs, especially cardiopulmonary function, promote physical and mental rehabilitation by adjusting the body, regulating the breath, regulating the mind. This paper aims to investigate the potential value of TCE for health preservation in the prevention and adjuvant treatment for COVID-19 according to an overview of application and analysis of existing evidence. On this basis, this review proposed the TCE plan by visiting clinical and practice experts, so as to provide some references for the prevention and treatment of COVID-19 with TCE in the world.
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McGuire S, Horton EJ, Renshaw D, Chan K, Krishnan N, McGregor G. Cardiopulmonary and metabolic physiology during hemodialysis and inter/intradialytic exercise. J Appl Physiol (1985) 2021; 130:1033-1042. [PMID: 33507853 DOI: 10.1152/japplphysiol.00888.2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hemodialysis is associated with numerous symptoms and side effects that, in part, may be due to subclinical hypoxia. However, acute cardiopulmonary and metabolic physiology during hemodialysis is not well defined. Intradialytic and interdialytic exercise appear to be beneficial and may alleviate these side effects. To better understand these potential benefits, the acute physiological response to exercise should be evaluated. The aim of this study was to compare and characterize the acute physiological response during hemodialysis, intradialytic exercise, and interdialytic exercise. Cardiopulmonary physiology was evaluated during three conditions: 1) hemodialysis without exercise (HD), 2) intradialytic exercise (IDEx), and 3) interdialytic exercise (Ex). Exercise consisted of 30-min constant load cycle ergometry at 90% V̇O2AT (anaerobic threshold). Central hemodynamics (via noninvasive bioreactance) and ventilatory gas exchange were recorded during each experimental condition. Twenty participants (59 ± 12 yr, 16/20 male) completed the protocol. Cardiac output (Δ = -0.7 L/min), O2 uptake (Δ = -1.4 mL/kg/min), and arterial-venous O2 difference (Δ = -2.0 mL/O2/100 mL) decreased significantly during HD. Respiratory exchange ratio exceeded 1.0 throughout HD and IDEx. Minute ventilation was lower (P = 0.001) during IDEx (16.5 ± 1.1 L/min) compared with Ex (19.8 ± 1.0 L/min). Arterial-venous O2 difference was partially restored further to IDEx (4.6 ± 1.9 mL/O2/100 mL) compared with HD (3.5 ± 1.2 mL/O2/100 mL). Hemodialysis altered cardiopulmonary and metabolic physiology, suggestive of hypoxia. This dysregulated physiology contributed to a greater physiological demand during intradialytic exercise compared with interdialytic exercise. Despite this, intradialytic exercise partly normalized cardiopulmonary physiology during treatment, which may translate to a reduction in the symptoms and side effects of hemodialysis.NEW & NOTEWORTHY This study is the first, to our knowledge, to directly compare cardiopulmonary and metabolic physiology during hemodialysis, intradialytic exercise, and interdialytic exercise. Hemodialysis was associated with increased respiratory exchange ratio, blunted minute ventilation, and impaired O2 uptake and extraction. We also identified a reduced ventilatory response during intradialytic exercise compared with interdialytic exercise. Impaired arterial-venous O2 difference during hemodialysis was partly restored by intradialytic exercise. Despite dysregulated cardiopulmonary and metabolic physiology during hemodialysis, intradialytic exercise was well tolerated.
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Affiliation(s)
- S McGuire
- Faculty of Health and Life Sciences, Centre for Sport, Exercise, and Life Sciences, Coventry University, Coventry, United Kingdom
| | - E J Horton
- Faculty of Health and Life Sciences, Centre for Sport, Exercise, and Life Sciences, Coventry University, Coventry, United Kingdom
| | - D Renshaw
- Faculty of Health and Life Sciences, Centre for Sport, Exercise, and Life Sciences, Coventry University, Coventry, United Kingdom
| | - K Chan
- Faculty of Health and Life Sciences, Centre for Sport, Exercise, and Life Sciences, Coventry University, Coventry, United Kingdom
| | - N Krishnan
- Faculty of Health and Life Sciences, Centre for Sport, Exercise, and Life Sciences, Coventry University, Coventry, United Kingdom.,Department of Nephrology, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom
| | - G McGregor
- Faculty of Health and Life Sciences, Centre for Sport, Exercise, and Life Sciences, Coventry University, Coventry, United Kingdom.,Department of Nephrology, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom.,Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, United Kingdom
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Yabe H, Kono K, Onoyama A, Kiyota A, Moriyama Y, Okada K, Kasuga H. Predicting a target exercise heart rate that reflects the anaerobic threshold in nonbeta-blocked hemodialysis patients: The Karvonen and heart rate reserve formulas. Ther Apher Dial 2021; 25:884-889. [PMID: 33511760 DOI: 10.1111/1744-9987.13628] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 12/16/2020] [Accepted: 01/16/2021] [Indexed: 11/28/2022]
Abstract
The aim of this study was to evaluate constants of the Karvonen (k) and heart rate reserve (HRR) (α) formulas that correspond to the anaerobic threshold (AT) to conveniently estimate the intensity of exercise therapy in nonbeta-blocked patients undergoing hemodialysis. Twenty-three patients undergoing hemodialysis performed cardiopulmonary exercise testing (CPX) and their HR at AT was measured. The predictor coefficients for a target HR corresponding to AT were calculated for each patient based on CPX. Interclass correlation coefficients (ICC) and Bland-Altman analysis were used to evaluate the reliability of the formulas. Mean values of coefficient k of the Karvonen formula and α of the HRR formula were 0.24 ± 0.11 and 17.4 ± 8, respectively. The target HR calculated with k = 0.24 and α = 17 had significant ICC between HR at AT (0.74 and 0.77, respectively; P < 0.05). Using the Karvonen and HRR formulas to determine a target HR corresponding to AT is a simple and easy method that can be used to develop exercise programs for hemodialysis patients.
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Affiliation(s)
- Hiroki Yabe
- Department of Physical Therapy, School of Rehabilitation Sciences, Seirei Christopher University, Hamamatsu, Shizuoka, Japan.,Department of Rehabilitation, Nagoya Kyoritsu Hospital, Nagoya, Japan
| | - Kenichi Kono
- Department of Physical Therapy, International University of Health and Welfare, School of Health Sciences at Narita, Narita, Japan
| | - Ayaka Onoyama
- Department of Rehabilitation, Nagoya Kyoritsu Hospital, Nagoya, Japan
| | - Akiho Kiyota
- Department of Rehabilitation, Nagoya Kyoritsu Hospital, Nagoya, Japan
| | | | - Keiko Okada
- Department of Nephrology, Nagoya Kyoritsu Hospital, Nagoya, Japan
| | - Hirotake Kasuga
- Department of Nephrology, Nagoya Kyoritsu Hospital, Nagoya, Japan
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de Oliveira Brito-Monzani J, Stoyell-Conti FF, Shecaira TP, Dos Santos Ferreira Silva MP, da Silva Dias D, Bernardes N, De Angelis K. Aerobic or resistance training improves autonomic control of circulation in oophorectomized rats with cardiometabolic dysfunctions: Impact on renal oxidative stress. Exp Gerontol 2020; 145:111181. [PMID: 33340684 DOI: 10.1016/j.exger.2020.111181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/09/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
Cardiovascular autonomic dysfunction is associated with end organ damage and increased risk of mortality. Menopause and metabolic syndrome increase the risk for cardiorenal complications. In this study, we investigated the effects of aerobic or resistance exercise training on autonomic control of circulation and renal oxidative stress in a model of menopause and metabolic syndrome. Female Wistar rats and spontaneously hypertensive rats (SHR) were divided into 5 groups (n = 8): control (C), hypertensive (H), and sedentary (FHO), aerobic trained (FHOTa) and resistance trained (FHOTr) oophorectomized hypertensive treated with fructose (100 mg/mL drink water for 19 weeks). The FHO group presented increased vascular sympathetic modulation (LF-SBP), impaired baroreflex sensitivity (BRS) associated with increased blood pressure (BP) when compared to the H group. Aerobic exercise training enhanced tachycardic responses, while resistance training improved bradycardic responses to BP changes, thus ameliorating BRS. Moreover, despite unchanged BP, both exercise training protocols were effective in preventing increase in LF-SBP, reduction in systemic nitric oxide bioavailability (NOx), and increase in oxidative stress in the renal tissue, by decreasing lipid and protein oxidation in renal tissue. Positive correlation between LF-SBP and renal lipoperoxidation (r = 0.63, p < 0.05), as well as a negative correlation between NOx and renal lipoperoxidation (r = -0.66, p < 0.05) were observed. In conclusion, both aerobic and resistance exercise training were effective in improving autonomic control of circulation and reducing renal oxidative stress, thus attenuating the deleterious effects induced by arterial hypertension and fructose overload in female rats after ovarian hormone deprivation.
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Affiliation(s)
- Janaina de Oliveira Brito-Monzani
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), Sao Paulo, Brazil; Federal University of Maranhao (UFMA), Maranhao, Brazil
| | - Filipe Fernandes Stoyell-Conti
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), Sao Paulo, Brazil; Department of Surgery, University of Miami, Miami, FL, USA
| | - Tânia Plens Shecaira
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), Sao Paulo, Brazil; Department of Physiology, Federal University of Sao Paulo (UNIFESP), Sao Paulo, SP, Brazil
| | | | - Danielle da Silva Dias
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), Sao Paulo, Brazil; Department of Physiology, Federal University of Sao Paulo (UNIFESP), Sao Paulo, SP, Brazil
| | - Nathalia Bernardes
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), Sao Paulo, Brazil; Human Movement Laboratory, Sao Judas Tadeu University (USJT), Sao Paulo, SP, Brazil
| | - Kátia De Angelis
- Laboratory of Translational Physiology, Universidade Nove de Julho (UNINOVE), Sao Paulo, Brazil; Department of Physiology, Federal University of Sao Paulo (UNIFESP), Sao Paulo, SP, Brazil.
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11
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Jiménez-Prieto CM, González-Tamajón R, Rodolfo Crespo-Montero R. Beneficios del ejercicio físico en la sesión de hemodiálisis. Una revisión sistemática. ENFERMERÍA NEFROLÓGICA 2020. [DOI: 10.37551/s2254-28842020024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Objetivo: El objetivo principal de esta revisión fue conocer los principales beneficios del ejercicio físico durante la sesión de diálisis, en los pacientes en programa de hemodiálisis periódicas.Material y Método: Se llevó a cabo una revisión sistemática a través de las bases de datos Pubmed, Science Direct y Google Académico. Se incluyeron artículos científicos en inglés y español, y se analizaron los artículos que trataban sobre ejercicio físico en la sesión de hemodiálisis. Se excluyeron aquellos artículos que no presentaran resultados y en los que el ejercicio físico fuese domiciliario.Resultados: Se incluyeron 18 artículos publicados entre 2015 y 2019. Todos los artículos fueron de diseño experimental. Se encontró una mejoría significativa de la fuerza muscular, al igual que de la capacidad física y de de la sintomatología depresiva. En menor medida, se observó una disminución de la presión arterial, disminución del proceso inflamatorio, mejoría de los valores nutricionales y mejora de la calidad de vida de estos pacientes.Conclusiones: El ejercicio físico en la sesión de hemodiálisis tiene beneficios para la salud de los pacientes. El ejercicio físico de baja intensidad, así como la electroestimulación neuromuscular en las sesiones de diálisis, mejora objetivamente la fuerza muscular, aumenta la capacidad física, mejora la sintomatología depresiva con un mejor manejo del estrés y la ansiedad. Además, perece que puede mejorar el proceso inflamatorio, parámetros nutricionales y disminuir la presión arterial, así como mejorar la calidad de vida. La electroestimulación neuromuscular y el ejercicio físico de baja intensidad, son los ejercicios más utilizados.
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Affiliation(s)
- Carmen Mª Jiménez-Prieto
- Departamento de Enfermería. Facultad de Medicina y Enfermería. Universidad de Córdoba. Córdoba. España
| | - Rosa González-Tamajón
- Departamento de Enfermería. Facultad de Medicina y Enfermería. Universidad de Córdoba. Córdoba. España
| | - Rodolfo Rodolfo Crespo-Montero
- Departamento de Enfermería. Facultad de Medicina y Enfermería. Universidad de Córdoba. Córdoba. España. Servicio de Nefrología. Hospital Universitario Reina Sofía de Córdoba. Córdoba. España. Instituto Maimónides de Investigación Biomédica de Córdoba. Córdoba. España
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12
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Intradialytic Cardiovascular Exercise Training Alters Redox Status, Reduces Inflammation and Improves Physical Performance in Patients with Chronic Kidney Disease. Antioxidants (Basel) 2020; 9:antiox9090868. [PMID: 32942555 PMCID: PMC7554691 DOI: 10.3390/antiox9090868] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/09/2020] [Accepted: 09/11/2020] [Indexed: 02/07/2023] Open
Abstract
Redox status (RS) perturbations and inflammation are fundamental features of chronic kidney disease (CKD) that are substantially exacerbated in end-stage renal disease (ESRD). This study aimed at investigating the efficacy of a 6-month intradialytic exercise training program on RS, inflammation and physical performance in patients with ESRD. Twenty hemodialysis (HD) patients (17 males, three females) were randomly assigned to either an intradialytic training (bedside cycling) group (TR; n = 10) or a control group (CON; n = 10) for 6 months. Anthropometrics [body mass and height, body mass index (BMI), body composition], physical performance (VO2peak), functional capacity [North Staffordshire Royal Infirmary (NSRI) walk test, sit-to-stand test (STS-60)], quality of life (short form-36 (SF-36) as well as RS [thiobarbituric acid reactive substances (TBARS), protein carbonyls (PC), reduced (GSH) and oxidized (GSSG) glutathione, GSH/GSSG, total antioxidant capacity (TAC), catalase activity (CAT)] and high-sensitivity C-reactive protein (hs-CRP) were assessed at baseline and after the 6-month intervention. Peak oxygen consumption (VO2peak) increased by 15% only in TR (p < 0.01). Performance in NSRI, STS-60 and SF-36 improved by 4–13% only in TR (p < 0.01). Exercise training reduced TBARS (by 28%), PC (by 31%) and hs-CRP (by 15%), and elevated GSH (by 52%), GSH/GSSG (by 51%), TAC (by 59%) and CAT (by 15%) (p < 0.01). These findings suggest that engagement in chronic intradialytic cardiovascular exercise alters RS, reduces inflammation and improves performance in patients with ESRD.
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13
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Andrade FP, Rezende PDS, Ferreira TDS, Borba GC, Müller AM, Rovedder PME. Effects of intradialytic exercise on cardiopulmonary capacity in chronic kidney disease: systematic review and meta-analysis of randomized clinical trials. Sci Rep 2019; 9:18470. [PMID: 31804617 PMCID: PMC6895108 DOI: 10.1038/s41598-019-54953-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 11/04/2019] [Indexed: 01/27/2023] Open
Abstract
Patients with chronic kidney disease show poorer functional and cardiorespiratory capacity than healthy individuals, and these impairments result in sedentarism. The aim of this study was to conduct a systematic review and meta-analysis of randomized clinical trials on the effects of different intradialytic exercise protocols on cardiopulmonary capacity in chronic kidney disease patients. The primary outcome was peak oxygen consumption (VO2peak) and the secondary outcomes were exercise duration and ventilation in the cardiopulmonary test. The quality of the evidence was evaluated using the GRADE guidelines. Seven studies with a total of 124 participants met the inclusion criteria. Compared to the non-exercise group, the exercise group improved in mean VO2peak (MD 4.06 [IC 0.81; 7.31]). In a separate analysis according to exercise modality, aerobic exercise plus strength training performed better than aerobic exercise alone (MD 5.28 [IC 3.90; 6.66]). In the exercise group, both exercise tolerance values (MD 3.10 [IC 1.70; 4.51]) and ventilation values in the cardiopulmonary test were better than those of the control group (MD 13.10 [IC 7.12; 19.09]). Thus, intradialytic exercise protocols can improve cardiopulmonary function, exercise tolerance and ventilatory efficiency in chronic kidney disease patients.
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Affiliation(s)
- Francini Porcher Andrade
- Programa de Pós Graduação em Ciências Pneumológicas at Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, postcode 90040-060, Brazil.
| | - Patrícia de Souza Rezende
- Physiotherapy Course, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, postcode 90040-060, Brazil
| | - Tatiane de Souza Ferreira
- Programa de Pós Graduação em Ciências Pneumológicas at Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, postcode 90040-060, Brazil
| | - Gabrielle Costa Borba
- Programa de Pós Graduação em Ciências Pneumológicas at Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, postcode 90040-060, Brazil
| | - Alice Mânica Müller
- Programa de Pós Graduação em Ciências Pneumológicas at Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, postcode 90040-060, Brazil
| | - Paula Maria Eidt Rovedder
- Programa de Pós Graduação em Ciências Pneumológicas at Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, postcode 90040-060, Brazil. .,Physiotherapy Course, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, postcode 90040-060, Brazil. .,Hospital de Clínicas de Porto Alegre, Porto Alegre, postcode 90035-903, Brazil.
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14
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Ferreira GD, Bohlke M, Correa CM, Dias EC, Orcy RB. Does Intradialytic Exercise Improve Removal of Solutes by Hemodialysis? A Systematic Review and Meta-analysis. Arch Phys Med Rehabil 2019; 100:2371-2380. [DOI: 10.1016/j.apmr.2019.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 02/20/2019] [Accepted: 02/20/2019] [Indexed: 01/23/2023]
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15
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Dias EC, Orcy R, Antunes MF, Kohn R, Rombaldi AJ, Ribeiro L, Oses JP, Ferreira GD, Araújo AM, Boff IF, Böhlke M. Intradialytic exercise with blood flow restriction: Something to add to hemodialysis adequacy? Findings from a crossover study. Hemodial Int 2019; 24:71-78. [PMID: 31612630 DOI: 10.1111/hdi.12793] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 08/30/2019] [Accepted: 09/04/2019] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Hemodialysis (HD) increases the lifespan of chronic kidney disease (CKD) patients. However, HD is only partially effective in replacing renal function. The aim of this study is to compare HD adequacy between sessions with intradialytic exercise with or without blood flow restriction (BFR) with sessions without exercise. METHODS A crossover study including 22 adult CKD patients on HD. The patients were assigned to BFR (n = 11) or exercise alone group (n = 11). Each patient was submitted to four HD sessions (two with exercise and two control sessions). HD adequacy was assessed by equilibrated Kt/V-urea (eKT/V), single-pool Kt/V-urea (sp-Kt/V), urea and phosphorus rebound, urea reduction ratio (URR) and removal of urea and phosphorus in dialysate. FINDINGS BFR exercise improved eKt/V and sp-Kt/V (1.32 ± 0.21 vs. 1.10 ± 0.16 for control, P < 0.001; 1.53 ± 0.26 vs. 1.27 ± 0.19 for control, P < 0.001, respectively) and URR (72.5 ± 5.4% vs. 66.1 ± 7.7% for control, P < 0.001). No difference in eKt/V, sp-Kt/V or URR could be detected between exercise alone and control HD sessions. Urea rebound was lower in BFR exercise vs. control sessions (-8.9 ± 9.1% vs. 30.7 ± 12.8%, P < 0.01) and exercise alone vs. control sessions (13.3 ± 29.0% vs. 42.4 ± 15.3%, P < 0.01). Phosphorus rebound was marginally lower in exercise vs. control sessions (14.4 ± 19.1% vs. 28.4 ± 22.1%, P = 0.18). Urea and phosphorus mass removal in dialysate were marginally higher in exercise vs. control sessions (42.2 ± 19.4 g vs. 35.7 ± 12.5 g, P = 0.24; 912.1 ± 360.9 mg vs. 778.6 ± 245.1 mg, P = 0.28). CONCLUSIONS Intradialytic exercise with BFR was more effective than standard exercise in increasing HD adequacy.
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Affiliation(s)
- Etiene C Dias
- Postgraduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil
| | - Rafael Orcy
- Physiology Department, Federal University of Pelotas, Pelotas, Brazil
| | - Maria F Antunes
- Postgraduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil
| | - Rodrigo Kohn
- Postgraduate Program in Physical Education, Federal University of Pelotas, Pelotas, Brazil
| | - Airton J Rombaldi
- Postgraduate Program in Physical Education, Federal University of Pelotas, Pelotas, Brazil
| | - Larissa Ribeiro
- Postgraduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil.,Dialysis and Renal Transplantation Unit, São Francisco de Paula University Hospital, Catholic University of Pelotas, Pelotas, Brazil
| | - Jean P Oses
- Postgraduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil
| | | | - Aline M Araújo
- Postgraduate Program in Physical Education, Federal University of Pelotas, Pelotas, Brazil
| | - Isis F Boff
- Postgraduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil
| | - Maristela Böhlke
- Postgraduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil.,Dialysis and Renal Transplantation Unit, São Francisco de Paula University Hospital, Catholic University of Pelotas, Pelotas, Brazil
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16
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Kirkman DL, Scott M, Kidd J, Macdonald JH. The effects of intradialytic exercise on hemodialysis adequacy: A systematic review. Semin Dial 2019; 32:368-378. [PMID: 30968465 DOI: 10.1111/sdi.12785] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dialysis adequacy is an independent predictor of high mortality rates in hemodialysis patients. Intradialytic exercise is a potential strategy to increase uremic solute removal by increasing blood flow to low perfusion tissue beds. The purpose of this review is to establish the efficacy of intradialytic exercise for hemodialysis adequacy. Additionally, this review aims to provide practical information to aid health care professionals implement intradialytic exercise for dialysis adequacy. Database and hand searches identified 15 published interventional studies that implemented intradialytic exercise for dialysis adequacy as a primary outcome measure in adult maintenance hemodialysis patients. Data pertaining to dialytic solute clearance of urea, creatinine, beta2 microglobulin, phosphate, and potassium were extracted. Mean differences, normalized to percentages, and effect sizes were calculated and reported. The current data pertaining to the use of intradialytic exercise for improving dialysis adequacy in terms of Kt/Vurea or small molecule uremic toxin clearance are equivocal. Limited data showed that intradialytic exercise has no effect middle molecule toxin (beta2 - microglobulin) clearance. Intradialytic exercise favored increased phosphate removal showing medium to large effects for reduced serum concentrations, reduced rebound and increased clearance. In summary, supervised light to moderate intradialytic aerobic cycling appears to be beneficial for increasing phosphate removal and may be an adjunct therapy for patients failing to meet clinical phosphate targets. Further work is required to establish the effect of intradialytic exercise on Kt/Vurea and other middle molecule and protein bound solutes. Research aimed at establishing the most effective exercise prescription for improved solute clearance is warranted.
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Affiliation(s)
- Danielle L Kirkman
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, Virginia
| | - Matthew Scott
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, Virginia
| | - Jason Kidd
- Department of Internal Medicine, Division of Nephrology, Virginia Commonwealth University, Richmond, Virginia
| | - Jamie H Macdonald
- School of Sport Health and Exercise Sciences, Bangor University, Wales, UK
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