My Baby, My Move: A Perinatal Physical Activity Intervention

描述（由申请人提供）：拟议研究的主要目的是制定产前身体活动干预措施，以促进定期休闲身体活动（RLPA）的参与。为了告知干预措施的发展，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，以及这些因素在第一次或经验丰富的孕妇之间以及目前参与RLPA的孕妇与不参与RLPA的孕妇（即久坐或参与低水平RLPA）之间可能存在多大程度的差异。拟议的身体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身体活动的有效媒介。研究的具体目的是：1）进行人种学研究，以检查孕妇参与体力活动的障碍和促进因素; 2）制定一份程序手册，进行随机体力活动试点干预，以增加产前定期休闲体力活动; 3）根据类型确定哪些招聘策略（例如医疗保健提供者、社区组织、印刷广告）和环境（如保健诊所、医院、社区组织）; 4）在孕妇中进行试点测试的方法（n=40; 20例干预，20例对照），以提供必要的信息（例如效应量、依从性和损耗率），指导未来在产前进行大规模随机对照体力活动干预试验。在更大规模的RCT试验中检验的假设包括：1）与对照组相比，参与体力活动干预的妇女将报告更高水平的身体自我效能感、行为技能和社会支持; 2）与对照组相比，干预组妇女将报告RLPA增加，产前体重增加减少，产前抑郁和感知压力减少; 3）产前参与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.