Table 7.

Studies reporting on myopenia in IBD from Asia

S.No	Author	Year	Country	Number	Parameter used to measure muscle mass	Prevalence	Outcome
1	Zhang T et al. 93	2017	China	204 CD‐105 UC‐99	L3 skeletal muscle index on CT scan †	25.5%	Myopenia is associated with higher disease activity and poor clinical outcomes
2	Bamba S et al. 94	2017	Japan	72 CD‐43 UC‐29	L3 skeletal muscle index on CT scan †	42%	Myopenia predicts intestinal resection
3	Zhang T et al. 95	2017	China	114 (CD)	L3 skeletal muscle index on CT scan †	61.4%	Patients undergoing bowel resection with myopenia had higher post‐operative complications
4	Bamba S et al. 96	2020	Japan	187 CD‐99 UC‐88	L3 skeletal muscle index on CT scan †	34.7%	Myopenia is associated with prolonged hospital stay
5	Kang MK et al. 97	2020	South Korea	443 (UC and CD)	Psoas muscle index on CT ‡	34.9%	Sarcopenia was an independent risk factor for NAFLD in patients with IBD
6	Kurban M et al. 98	2020	China	47 (CD)	Bioelectrical impedance analysis	66%	Body composition analysis is more accurate for muscle mass assessment than nutrition assessment scales
7	Lee CH et al. 99	2020	South Korea	79 (CD)	L3 skeletal muscle index on CT scan †	51%	Myopenia correlated with CRP levels
8	Ge Xi et al. 100	2021	China	233 (ASUC)	L3 skeletal muscle index on CT scan †	50.2%	Myopenia associated with failure of response to IV steroid, higher colectomy rates and postoperative complications
9	Boparai et al. 101	2021	India	44 (CD)	L3 skeletal muscle index on CT scan †	43%	Combination of myopenia and high visceral fat was associated with poor outcomes in CD
10	Ge Xi et al. 102	2022	China	254 (ASUC)	L3 skeletal muscle index on CT scan †	50%	Sarcopenia is an independent predictor for rescue therapy and colectomy
11	Nam K et al. 103	2023	South Korea	1027 CD‐854 UC‐173	L3 skeletal muscle index on CT scan †	56.8%	Myopenia is associated with perianal CD

^† L3 skeletal muscle index: Total cross‐sectional area of the skeletal muscles at L3 level divided by height (in meters) squared.

^‡ Psoas muscle index: Total psoas cross‐sectional area at L3 level divided by height (in meters) squared.

ASUC, acute severe ulcerative colitis; CD, Crohn's disease; NAFLD, non‐alcoholic fatty liver disease; UC, ulcerative colitis.