Fig. 4 | Scientific Reports

Fig. 4

From: MRI-based analysis of thigh intramuscular fat and its associations with age, sex, and BMI using data from the osteoarthritis initiative data

Fig. 4

Row 1: men vs. women. Representative MR images of right thighs from 65-year-old man (a) and a 61-year-old woman (b), both with a of BMI = 34 kg/m2 are shown. Note the abundance of fatty streaks in all muscle groups, particularly in the hamstrings in (b) compared to (a). GGs in (b) ranged from 2–3 for all muscles, while GGs in (a) ranged from 0–1 for all muscles. Row 2: normal weight vs. obese. Representative MR images of right thighs from a 58-year-old man with BMI = 19 kg/m2 (c) and 60-year-old man with BMI = 36 kg/m2 (d) are shown. Despite similar ages in both men, higher GGs, ranging between 1 and 3, were recorded in the participant with higher BMI (d) compared to the lean participant (c) with GGs ranging between 0 and 1. Row 3: younger vs. older. Representative MR Images of right thighs from a 48-year-old woman with BMI = 32 kg/m2 (e) and a 71-year-old woman with BMI = 31 kg/m2 (f) are shown. Note the higher abundance of fatty streaks within all muscle compartments in (f), representing increased intramuscular fat with older age. GGs ranged between 0–1 in (e) and 0–3 in (f).

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