Gastroenterology Department, University of São Paulo Medical School, Brazil.
Orthopedics and Traumatology Department, University of São Paulo Medical School, Brazil.
J Musculoskelet Neuronal Interact. 2024 Mar 1;24(1):31-37.
The aim of our study was to assess postoperative lower limbs muscle strength (MS) as a predictor of late surgical success (36 months).
Body composition analyses and isokinetic dynamometry evaluation were performed before (T0: n=123), six months (T1: n=123) and 36 months (T2: n=79) after Roux-en-y gastric bypass (RYGB). Surgical success (SS) was defined as ≥ 50% excess weight loss (EWL) 36 months after surgery or ≤ 50% surgical failure (SF).
There was no difference between relative MS extension (Ext) and flexion (Flex) in T1 and T2. There was also, no difference between relative MS Ext and Flex in T1 and T2 between patients with SS and SF. There was a difference in relative MS Ext (144.9 ± 39.8 Nm/kg x 125.5 ± 29.2 Nm/kg; p=0.04) and Flex (73.6 ± 21.8 Nm/kg x 60.4 ± 15.8 Nm/kg; p=0.02) between SS and SF patients only in T2. Patients with an increment in Ext and Flex MS ≥4 Nm/kg at T1 had approximately 76% of SS at 36 months.
An increase of lower limbs MS ≥4 Nm/kg 6 months after RYGB predicts SS at 36 months.
gov ID: NCT04129801.
我们研究的目的是评估术后下肢肌肉力量（MS）作为预测晚期手术成功（36 个月）的指标。
在 Roux-en-y 胃旁路术（RYGB）前（T0：n=123）、术后 6 个月（T1：n=123）和 36 个月（T2：n=79）进行身体成分分析和等速测力评估。手术成功（SS）定义为手术后 36 个月体重减轻≥50%（EWL）或≤50%手术失败（SF）。
T1 和 T2 时，相对伸肌（Ext）和屈肌（Flex）的 MS 无差异。SS 和 SF 患者 T1 和 T2 时，相对伸肌和 Flex 的 MS 也无差异。仅在 T2 时，SS 和 SF 患者的相对伸肌 Ext（144.9±39.8 Nm/kg 对 125.5±29.2 Nm/kg；p=0.04）和 Flex（73.6±21.8 Nm/kg 对 60.4±15.8 Nm/kg；p=0.02）有差异。T1 时 MS Ext 和 Flex 增加≥4 Nm/kg 的患者，36 个月时 SS 约为 76%。
RYGB 后 6 个月下肢 MS 增加≥4 Nm/kg 可预测 36 个月时的 SS。
gov ID：NCT04129801。
