Jürgensen S P, Borghi-Silva A, Bastos A M F G, Correia G N, Pereira-Baldon V S, Cabiddu R, Catai A M, Driusso P
Laboratório de Pesquisa em Saúde da Mulher, Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil.
Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos, São Carlos, SP, Brasil.
Braz J Med Biol Res. 2017 Sep 21;50(11):e5996. doi: 10.1590/1414-431X20175996.
The objective of this study was to evaluate the relationship between aerobic capacity and pelvic floor muscles (PFM) function in adult women. Women aged 18 or over and without urinary dysfunction or other chronic diseases were eligible to participate. They completed the habitual physical activity (HPA) questionnaire, underwent a PFM functional evaluation by palpation and perineometry, and performed a submaximal (between 75 and 85% of maximum heart rate) cardiopulmonary exercise (CPX) test to determine the ventilatory anaerobic threshold (VAT). Forty-one women were included (35±16 years, 75% physically active, 17% very active, and 8% sedentary and 17% presented grade 1 PFM contraction, 31.8% grade 2, 26.8% grade 3, and 24.4% grade 4, according to the modified Oxford Scale). The average PFM contraction pressure obtained by perineometer was 53±26 cmH2O and the average oxygen consumption at VAT (VO2VAT) obtained from CPX was 14±2 mL·kg-1·min-1. Significant correlations were found between PFM contraction pressure and VO2VAT (r=0.55; P<0.001); between PFM contraction pressure and HPA score (r=0.38; P=0.02); between age and VO2VAT (r=-0.25; P=0.049); and between VO2VAT and HPA score (r=0.36; P=0.02). An age-adjusted multiple linear regression equation (R2=0.32) was derived to estimate VO2VAT from the contraction value obtained by perineometer, so that the PFM contraction pressure was able to predict VO2VAT. The equation was validated using data from another group of 20 healthy women (33±12 years; PFM contraction: 49±23 cmH2O) and no significant difference was found between actual VO2VAT and predicted VO2VAT (13.1±1.9 vs 13.8±2.0 mL·kg-1·min-1). In conclusion, PFM function is associated with aerobic capacity in healthy women and PFM contraction pressure may be used to estimate VO2VAT in this population.
本研究的目的是评估成年女性有氧能力与盆底肌肉（PFM）功能之间的关系。年龄在18岁及以上、无排尿功能障碍或其他慢性疾病的女性有资格参与。她们完成了习惯性身体活动（HPA）问卷，通过触诊和会阴压力测定法进行了PFM功能评估，并进行了次极量（最大心率的75%至85%之间）心肺运动（CPX）测试以确定通气无氧阈（VAT）。纳入了41名女性（年龄35±16岁，75%身体活动活跃，17%非常活跃，8%久坐不动，根据改良牛津量表，17%表现为1级PFM收缩，31.8%为2级，26.8%为3级，24.4%为4级）。通过会阴压力测定仪获得的平均PFM收缩压力为53±26 cmH2O，通过CPX获得的VAT时的平均耗氧量（VO2VAT）为14±2 mL·kg-1·min-1。发现PFM收缩压力与VO2VAT之间存在显著相关性（r = 0.55；P < 0.001）；PFM收缩压力与HPA评分之间（r = 0.38；P = 0.02）；年龄与VO2VAT之间（r = -0.25；P = 0.049）；以及VO2VAT与HPA评分之间（r = 0.36；P = 0.02）。推导了一个年龄校正的多元线性回归方程（R2 = 0.32），以便根据通过会阴压力测定仪获得的收缩值来估计VO2VAT，从而使PFM收缩压力能够预测VO2VAT。使用另一组20名健康女性（年龄33±12岁；PFM收缩：49±23 cmH2O）的数据对该方程进行了验证，实际VO2VAT与预测VO2VAT之间未发现显著差异（13.1±1.9 vs 13.8±2.0 mL·kg-1·min-1）。总之，在健康女性中，PFM功能与有氧能力相关，PFM收缩压力可用于估计该人群的VO2VAT。
