OBJECTIVE To investigate whether a family history of LBP influences patient outcomes and treatment effects following home-exercises in older people with chronic LBP. DESIGN Secondary analysis of a randomised controlled trial. SETTING Local community. PARTICIPANTS People over 55 years old with chronic LBP. INTERVENTIONS Participants in the intervention group completed video-game exercises for 60 minutes, 3 times per week, for 8 weeks. Participants in the control group were instructed to maintain their usual levels of activity and care seeking behaviours. MAIN OUTCOMES MEASURES Participants indicated whether any of their immediate family members had a history of 'any' LBP or 'activity-limiting' LBP at baseline. We collected self-reported measures of pain, function, pain self-efficacy, care seeking, physical activity, disability, fear of movement/re-injury, and falls-efficacy at baseline, 8 weeks, 3 months and 6 months. We performed regression analyses to determine whether a family history of LBP predicted patient outcomes and moderated the effects of home-exercise. RESULTS Participants with a family history of any LBP were less likely to be highly active compared to those without a family history (OR=0.08, 95%CI: 0.01-0.42, p=0.003). Home-based video-game exercises led to improvements in function in those without a family history of activity-limiting LBP (β=1.78 95%CI: 0.56-3.00, p=0.006), but not in those with a family history (β=-0.17 95%CI: -2.56 to 2.21, p=0.880) (interaction p=0.049). A family history of LBP did not influence the remaining patient outcomes or treatment effects. CONCLUSION A family history of LBP appears to negatively influence physical activity levels in older people with chronic LBP. Further, home-based video-game exercises appear to be beneficial for older people with chronic LBP that do not have a family history of LBP.

中文翻译：

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家族史影响慢性腰痛老年人居家锻炼的效果：随机对照试验的二次分析

目的 调查 LBP 家族史是否影响慢性 LBP 老年人在家锻炼后的患者预后和治疗效果。设计随机对照试验的二级分析。设置当地社区。参与者 55 岁以上患有慢性 LBP 的人。干预 干预组的参与者完成了 60 分钟的视频游戏练习，每周 3 次，持续 8 周。对照组的参与者被指示保持他们通常的活动水平和寻求护理的行为。主要结果测量参与者指出他们的直系亲属在基线时是否有“任何”LBP 或“活动限制”LBP 的病史。我们收集了自我报告的疼痛、功能、疼痛自我效能、寻求护理、身体活动、残疾、在基线、8 周、3 个月和 6 个月时对运动/再次受伤的恐惧和跌倒疗效。我们进行了回归分析以确定 LBP 家族史是否能预测患者的预后并减轻家庭锻炼的影响。结果 与没有家族史的参与者相比，有任何 LBP 家族史的参与者不太可能高度活跃（OR=0.08，95%CI：0.01-0.42，p=0.003）。以家庭为基础的视频游戏锻炼可以改善没有限制活动的 LBP 家族史的人的功能（β=1.78 95%CI：0.56-3.00，p=0.006），但没有家族史的人（β =-0.17 95%CI：-2.56 到 2.21，p=0.880）（交互作用 p=0.049）。LBP 家族史不影响剩余的患者结果或治疗效果。结论 LBP 家族史似乎对患有慢性 LBP 的老年人的身体活动水平产生负面影响。此外，家庭视频游戏练习似乎对没有 LBP 家族史的慢性 LBP 老年人有益。