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Intradialytic Cycling Does Not Exacerbate Microparticles or Circulating Markers of Systemic Inflammation in Haemodialysis Patients

Abstract

Purpose: Patients receiving haemodialysis (HD) display elevated circulating microparticle (MP) concentration, tissue factor (TF) expression and markers of systemic inflammation, though regular intradialytic cycling (IDC) may have a therapeutic effect. This study investigated the impact of regular, moderate-intensity IDC on circulating MPs and inflammatory markers in unit-based HD patients.

Methods: Patients were cluster-randomised to intervention (n = 20, age: 51.4 ± 18.1 years, body mass: 77.6 ± 18.3 kg, mean ± SD) or no-exercise control (n = 20, 56.8 ± 14.0 years, 80.5 ± 26.5 kg). Intervention participants completed 30 min of moderate intensity (rating of perceived exertion [RPE] of 12-14) IDC, thrice weekly for 6 months. Pre-dialysis venous blood samples were obtained at 0, 3 and 6 months. Circulating MP phenotypes, cytokines, chemokine and MP TF expression were quantified using flow cytometry and cytometric bead array assays.

Results: Despite high exercise compliance (82%), no IDC-dependent effects were observed for any MP, cytokine or chemokine measure (p ≥ 0.051, η ≤ 0.399) other than TNF-α (p = 0.001, η = 0.186), though no significance was revealed upon post hoc analysis.

Conclusion: Six months of regular, moderate-intensity IDC had no effect on MPs, cytokines or chemokines. This suggests that the exercise did not exacerbate thrombotic or inflammatory status, though further functional assays are required to confirm this.

Trial Registration: ISRCTN1129707, prospectively registered on 05/03/2015.

Citing Articles

Effects of Exercise on Inflammatory Markers in Individuals with Chronic Kidney Disease: A Systematic Review and Meta-Analysis.

Baiao V, Cunha V, Duarte M, Andrade F, Ferreira A, Nobrega O Metabolites. 2023; 13(7).

PMID: 37512502 PMC: 10385645. DOI: 10.3390/metabo13070795.


Effect of Exercise on Inflammation in Hemodialysis Patients: A Systematic Review.

Melendez Oliva E, Villafane J, Alonso Perez J, Alonso Sal A, Molinero Carlier G, Quevedo Garcia A J Pers Med. 2022; 12(7).

PMID: 35887685 PMC: 9322638. DOI: 10.3390/jpm12071188.

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