Nutritional Strategy to Minimize Early Lean Mass Loss after SG: The Role of Low-BCAA Soy Peptide Supplements.

The LBP group demonstrated significantly lower percentage FFM loss from total weight loss (%FFML/WL) compared to the CP and WP groups at one month postoperatively.

• Differences in %FFML/WL between groups were statistically significant (p < 0.05)
• Differences remained significant after covariate adjustment for age, sex, and baseline BMI
• Study used a retrospective cohort design with 200 SG patients
• Body composition was assessed using bioelectrical impedance analysis before and one month after surgery

The LBP group showed smaller reductions in absolute FFM compared to the CP and WP groups one month after surgery.

• Differences in absolute FFM reduction were statistically significant (p < 0.05)
• Comparisons were adjusted for age, sex, and baseline BMI
• Three protein supplement types were compared: low-BCAA soy peptide-based (LBP), whey protein-based (WP), and compound protein-based (CP)
• Primary outcomes included changes in total and regional FFM

Subgroup analysis indicated greater FFM preservation with LBP supplementation in female patients, those under 30 years of age, and patients with baseline FFM ≤ 50 kg.

• Subgroup analyses were based on age, sex, and baseline FFM
• Patients with baseline FFM ≤ 50 kg showed greater preservation compared to those with higher baseline FFM
• Younger patients (under 30 years of age) benefited more from LBP supplementation
• These subgroup differences suggest differential responses to protein supplementation type based on patient characteristics

Sleeve gastrectomy often results in rapid fat-free mass loss during the early postoperative period, which may impair recovery and metabolic stability.

• SG is described as an effective bariatric procedure
• Early postoperative FFM loss was the primary concern motivating the study
• The study period focused on the first month after surgery
• The study enrolled 200 SG patients categorized by postoperative protein supplementation strategy

The authors suggest that LBP may be an effective component of early postoperative nutritional care to minimize muscle loss, with adequate protein intake and physical activity being important combined factors.

• Low-BCAA soy peptide supplementation was associated with 'superior early FFM preservation after SG'
• The authors highlight 'the combined importance of adequate protein intake and physical activity in optimizing lean mass preservation'
• LBP was described as particularly beneficial for younger and leaner patients
• The findings are based on a retrospective cohort study design, limiting causal inference