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Abstract: SA-PO292

Physical Activity and Sleep Levels in Hemodialysis Patients as Quantified by a Wearable Device

Session Information

Category: Dialysis

  • 701 Dialysis: Hemodialysis and Frequent Dialysis

Authors

  • Han, Maggie, Renal Research Institute, New York, New York, United States
  • Thwin, Ohnmar, Renal Research Institute, New York, New York, United States
  • Tao, Xia, Renal Research Institute, New York, New York, United States
  • Rivera Fuentes, Lemuel, Renal Research Institute, New York, New York, United States
  • Patel, Amrish U., Renal Research Institute, New York, New York, United States
  • Kotanko, Peter, Renal Research Institute, New York, New York, United States
Background

Hemodialysis (HD) patients have a high prevalence of sedentary lifestyle and poor sleep. Decreased physical activity level (PAL) and sleep are associated with negative outcomes. Wearable activity trackers (WAT) allow the remote monitoring of PAL and sleep parameters. We aimed to objectively quantify PAL and sleep using a WAT in HD patients.

Methods

HD patients from 4 New York City clinics were enrolled starting June 2018 and followed for up to 1 year. Ambulatory patients ≥18 years, on maintenance HD, and owning a mobile device were included. Each patient was provided with and taught how to use the Fitbit Charge 2. The 1st month of the study was the baseline period. PAL was measured by steps/day (s/d). Sleep duration was measured by total time asleep; sleep efficiency was calculated as (total time asleep)/(total time in bed). PAL were categorized based on average number of s/d: sedentary: < 5K s/d; fairly active: 5-10k s/d; active: 10-15k s/d; very active: > 15k s/d. Sleep duration of ≥ 7 hrs were categorized as having good sleep.

Results

We enrolled 119 patients (age 54±12 years; 59% Black; 37% lived alone; 54% had an education level of college and above). 1,561 and 1,066 patient days PAL and sleep data, respectively, from the baseline period were included in the analysis. Results of the PAL and sleep data are shown in Fig. 1. On average, patients walked 6,120 s/d, slept 292 minutes/day, and had a sleep efficiency of 93%.

Conclusion

Most patients walked less than the daily recommended 10k s/d and slept less than 7 hrs. However, they had high sleep efficiency indicating that though they have shortened sleep durations, their time in bed is mostly spent asleep. Barriers to PAL and good sleep should be explored to improve these factors which attribute greatly to a patient’s quality of life and health outcomes.

Funding

  • Commercial Support –