My Baby, My Move: A Perinatal Physical Activity Intervention

描述(由申请人提供)：拟议研究的主要目标是开发产前体力活动干预措施，以促进参与定期休闲体力活动(RLPA)。为了更好地了解干预措施的进展情况，将进行人种学研究，以更好地了解哪些因素促进和阻止孕妇参与RLPA，以及第一次或退伍军人孕妇和目前从事RLPA的孕妇与不参与RLPA的孕妇(即久坐或从事低水平RLPA)之间的差异有多大。拟议的体力活动干预试点将旨在改善某些个人决定因素(即自我效能、行为技能和社会支持)。这些个人决定因素被认为是体力活动的有效中介。这项研究的具体目的是：1)进行人种学研究，以检查孕妇参与体育活动的障碍和促进者；2)制定程序手册，进行随机体力活动试点干预，以增加产前定期休闲体育活动；3)根据类型(例如，医疗保健提供者、社区组织、印刷广告)和环境(例如，医疗诊所、医院、社区组织)确定哪种招募策略产生最有效的收益；4)在孕妇中进行试点测试方法(n=40；20干预，20对照)，以提供必要的信息(如效果大小、依从性和流失率)，以指导今后在产前期间实施大规模随机对照体力活动干预试验。将在更大规模的RCT试验中检验的假设包括：1)与控制组妇女相比，参加体力活动干预的妇女报告的身体自我效能、行为技能和社会支持水平更高；2)干预组妇女报告的RLPA增加，产前体重增加、产前抑郁和感觉到的压力比她们的控制组妇女低；以及3)参加产前RLPA将降低不良分娩结局、产后抑郁和超重的风险。

DESCRIPTION (provided by applicant): The main objective of the proposed study is to develop an antenatal physical activity intervention to promote engagement in regular leisure physical activity (RLPA). In order to inform the development of the intervention, ethnographic studies will be conducted to better understand what factors facilitate and prevent pregnant women from engaging in RLPA and to what extent these may differ among pregnant women who are first time or veteran mothers and among pregnant women who currently engage in RLPA versus those who do not (i.e. are sedentary or engage in low levels of RLPA). The proposed pilot physical activity intervention will be designed to improve certain personal determinants (i.e. self-efficacy, behavioral skills, and social support). These personal determinants have been suggested to be effective mediators of physical activity. The specific aims of the study are to: 1) conduct ethnographic studies to examine barriers and facilitators to physical activity engagement among pregnant women; 2) Develop a manual of procedures to conduct a randomized physical activity pilot intervention to increase antenatal regular leisure physical activity; 3) Determine which recruitment strategies based on type (e.g. healthcare provider, community organizations, print advertisements) and setting (e.g. healthcare clinics, hospitals, community organizations) that produce the most effective yield; 4) Pilot test methodologies in pregnant women (n=40; 20 intervention, 20 control) to provide necessary information (e.g. effect sizes, adherence and attrition rates) to guide future implementation of a large-scale, randomized controlled physical activity intervention trial in the antenatal period. The hypotheses to be tested in the larger RCT trial include 1) women who engage in the physical activity intervention will report greater levels of physical self-efficacy, behavioral skills, and social support, compared to women in the control group; 2) women in the intervention group will report an increase in RLPA, decrease in antenatal weight gain, antenatal depression and perceived stress compared to their control counterparts; and 3) engagement in antenatal RLPA will reduce the risk of adverse birth outcomes, postpartum depression and overweight.