CClinicalTrials.gg
CompletedNCT05037747Updated Jul 7, 2022

Effects of TRF on Obese Patients With CKD Stage 3-4

An interventional study of Time-restricted feeding(TRF) in Time Restricted Feeding, Renal Insufficiency, Chronic and Obesity, sponsored by Guangdong Provincial Hospital of Traditional Chinese Medicine. Completed at 1 site in China. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2022-07-07.

Sponsored by Guangdong Provincial Hospital of Traditional Chinese Medicine · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
28
Allocation
Non-randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

Obesity is associated with glomerular hyperfiltration leading to renal impairment and is a risk factor for the progression of kidney disease.Weight loss can reduce proteinuria and improve eGFR.Intermittent fasting is safe and effective, and in addition to improving body shape and weight in obese patients, it can also improve glucolipid metabolism, reduce proteinuria, improve kidney function and delay the progression of kidney disease.

Read the detailed description

KDOQI clinical practice guideline for nutrition in chronic kidney disease (CKD) uses a low-protein diet to reduce renal impairment and delay progression. The current research hotspot is dietary intervention. Time-restricted feeding was used to intervene in the progression of CKD. It restrict the time of eating but not the eaten calories, which have a higher compliance and safety. Studies have shown that intermittent fasting in obese patients with CKD is not only reduce body weight, but also improves glycolipid metabolism, reduces proteinuria and delays the progression of kidney disease. Intermittent fasting is currently a scientific research hotspot, and there are few international studies on the implementation of intermittent fasting to delay the deterioration of renal function in obese CKD patients, and lack of data on Chinese patients, which has great research potential. Based on the above background, this study was conducted as an pilot clinical trial to explore the effects of intermittent fasting on obese patients with CKD and to observe its effectiveness, safety and compliance.

02

Conditions studied

  • Time Restricted Feeding
  • Renal Insufficiency, Chronic
  • Obesity

Keywords

  • time-restricted feeding
  • chronic kidney disease
  • obesity
03

In context

Renal Insufficiency

1,995 studies on the registry are indexed under Renal Insufficiency; 173 are open to participants now.

This study's enrollment of 28 is below the median of 43 across 1,503 interventional studies indexed under Renal Insufficiency.

Browse Renal Insufficiency studies →

Lead sponsor

Guangdong Provincial Hospital of Traditional Chinese Medicine is the lead sponsor of 40 studies on the registry; 9 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age 18-65 years
  • CKD stage 3-4 and not on dialysis (eGFR: 15-59ml/min/1.73m2)
  • BMI ≥ 25 kg/m2
  • Good reading and comprehension skills, simple smartphone operation and no communication difficulties
  • Signed informed consent

Exclusion criteria

Exclusion Criteria:

  • Pregnant and breastfeeding
  • End-stage diseases
  • Acute and active diseases such as gastrointestinal bleeding or acute infections, serious decompensation with diseases such as cirrhosis decompensation stage, malignant tumor, serious heart and lung diseases, severe primary diseases of hematopoietic system, severe hypertension (systolic blood pressure ≥200mmHg, diastolic blood pressure ≥120mmHg) and difficult to control blood pressure, within 3 months after major surgery, such as open surgery
  • Mental patients
  • Using medium-high doses of hormones and immunosuppressants
  • Participating in other researchers
  • Taking other dietary therapies, undergoing weight loss treatment
  • Vegetarian
  • Type 1 diabetes and type 2 diabetes using insulin
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
28 participants (actual)

Study arms

  • Experimental
    Time-restricted feeding(TRF)

    The TRF group was asked to restrict the eating window to 8 hours a day, during waking hours and also continue a low-protein diet.

    Behavioral: Time-restricted feeding(TRF)

  • No intervention
    Control

    The control group was asked to continue their usual low-protein diet eating schedule and pattern.

Interventions

  • BehavioralTime-restricted feeding(TRF)

    The TRF group was asked to restrict the eating window to 8 hours a day, during waking hours and also continue a low-protein diet.

06

What researchers measure

Primary outcomes

  1. Change in eGFR (ml/min/1.73m2)

    eGFR at final visit - eGFR at initial visit

    Time frame: 12 weeks

Secondary outcomes

  1. Changes in body weight (Kilograms)

    body weight at final visit - body weight at initial visit

    Time frame: 12 weeks

  2. Changes in waist circumference (cm)

    waist circumference at final visit - waist circumference at initial visit

    Time frame: 12 weeks

  3. Change in body mass index (kg/m2)

    body mass index at final visit - body mass index at initial visit

    Time frame: 12 weeks

  4. Changes in serum total cholesterol levels (mmol/L)

    serum total cholesterol levels at final visit - serum total cholesterol levels at initial visit

    Time frame: 12 weeks

  5. Changes in serum low density lipoprotein cholesterol levels (mmol/L)

    serum low density lipoprotein cholesterol levels at final visit - serum low density lipoprotein cholesterol levels at initial visit

    Time frame: 12 weeks

  6. Changes in serum triglyceride levels (mmol/L)

    serum triglyceride levels at final visit - serum triglyceride levels at initial visit

    Time frame: 12 weeks

  7. Changes in serum high density lipoprotein cholesterol levels (mmol/L)

    serum high density lipoprotein cholesterol levels at final visit - serum high density lipoprotein cholesterol levels at initial visit

    Time frame: 12 weeks

  8. Changes in serum albumin (g/L)

    serum albumin at final visit - serum albumin at initial visit

    Time frame: 12 weeks

  9. Changes in total serum protein (g/L)

    total serum protein at final visit - total serum protein at initial visit

    Time frame: 12 weeks

  10. Changes in fat free mass (kg)

    fat free mass at final visit - fat free mass at initial visit

    Time frame: 12 weeks

  11. Changes in body fat mass (kg)

    body fat mass at final visit - body fat mass at initial visit

    Time frame: 12 weeks

  12. Changes in percent body fat (%)

    percent body fat at final visit - percent body fat at initial visit

    Time frame: 12 weeks

  13. Changes in waist-hip ratio

    waist-hip ratio at final visit - waist-hip ratio at initial visit

    Time frame: 12 weeks

  14. Changes in soft lean mass (kg)

    soft lean mass at final visit - soft lean mass at initial visit

    Time frame: 12 weeks

  15. Changes in visceral fat area (cm2)

    visceral fat area at final visit - visceral fat area at initial visit

    Time frame: 12 weeks

  16. Changes in arm circumference (cm)

    arm circumference at final visit - arm circumference at initial visit

    Time frame: 12 weeks

  17. Changes in triceps skin fold thickness (cm)

    triceps skin fold thickness at final visit - triceps skin fold thickness at initial visit

    Time frame: 12 weeks

  18. Changes in grip strength (kg)

    grip strength at final visit - grip strength at initial visit

    Time frame: 12 weeks

  19. Changes in fasting blood glucose (mmol/L)

    fasting blood glucose at final visit - fasting blood glucose at initial visit

    Time frame: 12 weeks

  20. Changes in serum creatinine (umol/L)

    serum creatinine at final visit - serum creatinine at initial visit

    Time frame: 12 weeks

  21. Changes in blood urea nitrogen (mmol/L)

    blood urea nitrogen at final visit - blood urea nitrogen at initial visit

    Time frame: 12 weeks

  22. Changes in serum uric acid (umol/L)

    serum uric acid at final visit - serum uric acid at initial visit

    Time frame: 12 weeks

  23. Changes in proteinuria creatinine ratio (g/g)

    proteinuria creatinine ratio at final visit - proteinuria creatinine ratio at initial visit

    Time frame: 12 weeks

  24. Changes in serum cystatin C (mg/L)

    serum cystatin C at final visit - serum cystatin C at initial visit

    Time frame: 12 weeks

  25. Changes in total urine urea in 24 hours (mmol/24h)

    total urine urea in 24 hours at final visit - total urine urea in 24 hours at initial visit

    Time frame: 12 weeks

  26. Changes in interleukin-6 (pg/mL)

    interleukin-6 at final visit - interleukin-6 at initial visit

    Time frame: 12 weeks

  27. Changes in tumor necrosis factor-α (pg/mL)

    tumor necrosis factor-α at final visit - tumor necrosis factor-α at initial visit

    Time frame: 12 weeks

  28. Changes in C-reactive protein (mg/L)

    C-reactive protein at final visit - C-reactive protein at initial visit

    Time frame: 12 weeks

  29. Changes in species of intestinal flora

    species of intestinal flora at final visit - species of intestinal flora at initial visit

    Time frame: 12 weeks

Other outcomes

  1. Changes in hunger scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  2. Changes in fatigue scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  3. Changes in satiety scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  4. Changes in gastrointestinal flatulence scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  5. Changes in nausea and vomiting scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  6. Changes in constipation scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  7. Changes in diarrhea scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  8. Changes in dry mouth and bitterness scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  9. Changes in dizziness and headache scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  10. Changes in irritability scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  11. Changes in anxiety scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

  12. Changes in depression scores

    Assessed using Visual Analog Scales (VAS with a scale of 1-10)

    Time frame: Weeks 6 and 12

07

Study locations

1 site
  • Guangdong Provincial Hospital of Chinese Medicine
    Guangzhou, Guangdong 510120, China
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 7, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05037747
Lead sponsor
Guangdong Provincial Hospital of Traditional Chinese Medicine
Responsible party
Liu Xu-sheng (Head of Nephrology, Director, Principal Investigator, Clinical Professor, Guangdong Provincial Hospital of Traditional Chinese Medicine) — Principal investigator
First posted
Sep 8, 2021
Start date
Aug 12, 2021
Primary completion
Mar 30, 2022
Completion
Jul 1, 2022
Last update
Jul 7, 2022

Study contacts

Xu-sheng Liu, M.M
study chair · Guangdong Provincial Hospital of Traditional Chinese Medicine

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2022. You cannot join it, but the record below documents what was studied.

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