Breast cancer survivors reduce accelerometer-measured sedentary time in an exercise intervention.
Breast cancer survivors reduce accelerometer-measured sedentary time in an exercise intervention.
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乳腺癌幸存者在运动干预中减少了加速计测量的静坐时间。
DOI：
10.1007/s11764-019-00768-8
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Hartman,SheriJ
中科院分区：
文献类型：
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作者：
Weiner,LaurenS;Takemoto,Michelle;Godbole,Suneeta;Nelson,SandahlH;Natarajan,Loki;Sears,DorothyD;Hartman,SheriJ
目的癌症幸存者是高度久坐和低体力活动。身体活动干预如何影响久坐行为仍不清楚。二次分析研究了乳腺癌幸存者中久坐行为的变化，参与了体力活动干预，显着增加中度到剧烈的体力活动（MVPA）methodsinadequately活跃的乳腺癌幸存者被随机分配到一个12周的体力活动干预（运动臂）或对照arm. The干预只集中在增加MVPA，没有针对久坐行为的内容。在基线和12周时测量总久坐行为、轻度体力活动（LPA）和MVPA（ActiGraph GT 3X+加速计）。单独的线性混合效应模型测试了对久坐行为的干预效果，对LPA的干预效果，MVPA变化与久坐行为变化之间的关系，和潜在的调解人的干预效果久坐行为。结果锻炼臂有显着更大的减少久坐行为比对照组（平均-24.9 min/d（SD = 5.9）vs.-4.8 min/d（SD = 5.9），B=-20.1（SE = 8.4），p= 0.02）。MVPA的较大增加与久坐行为的较大减少相关（B=-1.9（SE = 0.21），p< 0.001）。远离手术的女性久坐行为的减少明显大于接近手术的女性（B=-0.91（SE = 0.5），p= 0.07）。从基线到12周，LPA的变化没有显著的组间差异（B= 5.64（SE = 7.69），p= 0.48）.ConclusionsBreast cancer survivors in a physical activity intervention reduced total seditary time additionally to increase MVPA.Implications for Cancer SurvivorsBoth increased physical activity and reducing seditary behavior are needed to promote optimal health in cancer survivors.这些结果表明，MVPA和久坐行为可以成功地共同靶向，特别是在长期癌症幸存者中。 www.ClinicalTrials.gov (NCT 02332876）。
PurposeCancer survivors are highly sedentary and have low physical activity. How physical activity interventions impact sedentary behavior remains unclear. This secondary analysis examined changes in sedentary behavior among breast cancer survivors participating in a physical activity intervention that significantly increased moderate-to-vigorous physical activity (MVPA).MethodsInsufficiently active breast cancer survivors were randomized to a 12-week physical activity intervention (exercise arm) or control arm. The intervention focused solely on increasing MVPA with no content targeting sedentary behavior. Total sedentary behavior, light physical activity (LPA), and MVPA were measured at baseline and 12 weeks (ActiGraph GT3X+ accelerometer). Separate linear mixed-effects models tested intervention effects on sedentary behavior, intervention effects on LPA, the relationship between change in MVPA and change in sedentary behavior, and potential moderators of intervention effects on sedentary behavior.ResultsThe exercise arm had significantly greater reductions in sedentary behavior than the control arm (mean − 24.9 min/day (SD = 5.9) vs. − 4.8 min/day (SD = 5.9),b= − 20.1 (SE = 8.4),p= 0.02). Larger increases in MVPA were associated with larger decreases in sedentary behavior (b= − 1.9 (SE = 0.21),p< 0.001). Women farther out from surgery had significantly greater reductions in sedentary behavior than women closer to surgery (b= − 0.91 (SE = 0.5),p= 0.07). There was no significant group difference in change in LPA from baseline to 12 weeks (b= 5.64 (SE = 7.69),p= 0.48).ConclusionsBreast cancer survivors in a physical activity intervention reduced total sedentary time in addition to increasing MVPA.Implications for Cancer SurvivorsBoth increasing physical activity and reducing sedentary behavior are needed to promote optimal health in cancer survivors. These results show that MVPA and sedentary behavior could be successfully targeted together, particularly among longer-term cancer survivors.Clinical trial registrationThis study is registered at www.ClinicalTrials.gov (NCT 02332876).