TY - JOUR
T1 - Life style modification improves insulin resistance and liver histology in patients with non-alcoholic fatty liver disease
AU - Bhat, Ganesh
AU - Baba, Chalamalasetty Sreenivasa
AU - Pandey, Amaresh
AU - Kumari, Neeraj
AU - Choudhuri, Gourdas
PY - 2012/12/1
Y1 - 2012/12/1
N2 - Aim: To study the effect of regular aerobic exercise on insulin resistance, serum aminotransferase and liver histology in nonalcoholic fatty liver disease (NAFLD) patients. Methods: Sixty (mean age 40.0 ± 8.5 years, 75% male) NAFLD patients were included in the study. After baseline anthropometric measurement i.e., body mass index (BMI), waist circumference (WC); all patients were advised regular aerobic exercise for 30 min/d, for at least 5 d/wk and trained to achieve around 70% of his maximal heart rate. In addition, moderately energy restricted diet was advised to patients with high BMI (> 25 kg/m2). Monthly follow up was done by measuring BMI, WC, aspartate aminotransferase, and alanine aminotransferase (ALT). Insulin resistance was calculated using homeostasis model assessment (HOMA) of insulin resistance (HOMA-IR) model, at baseline and after 6 mo. Insulin resistance was arbitrarily considered altered when it was = 2. Liver biopsy was done in a section of patients at baseline and after 6 mo. Results: Seventy percent (42/60) patients were overweight or obese; 95% (57/60) had central obesity (WC > 90 cm in men, > 80 cm in women). In the 45 exercise compliant patients insulin resistance decreased from 6.4 ± 6.1 to 1.3 ± 1.0, BMI from 26.7 ± 3.3 kg/m2 to 25.0 ± 3.3 kg/m2, WC from 95.7 ± 8.9 cm to 90.8 ± 7.3 cm and ALT from 84.8 ± 43.5 U/L to 41.3 ± 18.2 U/L (P < 0.01). In 15 exercise noncompliant patient's insulin resistance, BMI, WC and ALT did not show significant change at 6 mo follow up. Six of 8 patients in compliant group on repeat liver biopsy showed significant change in steatosis and necroinflammation. Nonalcoholic steatohepatitis scores improved form 5.3 ± 1.5 to 3.35 ± 1.5. The decline in insulin resistance correlated with decline in ALT (P = 0.01, rs = 0.90) and liver histology (P = 0.03, rs = 0.73). Conclusion: Life style modification improves insulin resistance resulting in improvement in ALT and liver histology in NAFLD patients.
AB - Aim: To study the effect of regular aerobic exercise on insulin resistance, serum aminotransferase and liver histology in nonalcoholic fatty liver disease (NAFLD) patients. Methods: Sixty (mean age 40.0 ± 8.5 years, 75% male) NAFLD patients were included in the study. After baseline anthropometric measurement i.e., body mass index (BMI), waist circumference (WC); all patients were advised regular aerobic exercise for 30 min/d, for at least 5 d/wk and trained to achieve around 70% of his maximal heart rate. In addition, moderately energy restricted diet was advised to patients with high BMI (> 25 kg/m2). Monthly follow up was done by measuring BMI, WC, aspartate aminotransferase, and alanine aminotransferase (ALT). Insulin resistance was calculated using homeostasis model assessment (HOMA) of insulin resistance (HOMA-IR) model, at baseline and after 6 mo. Insulin resistance was arbitrarily considered altered when it was = 2. Liver biopsy was done in a section of patients at baseline and after 6 mo. Results: Seventy percent (42/60) patients were overweight or obese; 95% (57/60) had central obesity (WC > 90 cm in men, > 80 cm in women). In the 45 exercise compliant patients insulin resistance decreased from 6.4 ± 6.1 to 1.3 ± 1.0, BMI from 26.7 ± 3.3 kg/m2 to 25.0 ± 3.3 kg/m2, WC from 95.7 ± 8.9 cm to 90.8 ± 7.3 cm and ALT from 84.8 ± 43.5 U/L to 41.3 ± 18.2 U/L (P < 0.01). In 15 exercise noncompliant patient's insulin resistance, BMI, WC and ALT did not show significant change at 6 mo follow up. Six of 8 patients in compliant group on repeat liver biopsy showed significant change in steatosis and necroinflammation. Nonalcoholic steatohepatitis scores improved form 5.3 ± 1.5 to 3.35 ± 1.5. The decline in insulin resistance correlated with decline in ALT (P = 0.01, rs = 0.90) and liver histology (P = 0.03, rs = 0.73). Conclusion: Life style modification improves insulin resistance resulting in improvement in ALT and liver histology in NAFLD patients.
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U2 - 10.4254/wjh.v4.i7.209
DO - 10.4254/wjh.v4.i7.209
M3 - Article
AN - SCOPUS:84877003841
SN - 1948-5182
VL - 4
SP - 209
EP - 217
JO - World Journal of Hepatology
JF - World Journal of Hepatology
IS - 7
ER -