Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL 60612, USA.
Transl Behav Med. 2021 Oct 23;11(10):1857-1862. doi: 10.1093/tbm/ibab009.
Hippocampal atrophy is associated with cognitive decline. Physical activity (PA) can reverse the hippocampal loss. This study investigated the effects of the 4 month BAILAMOS dance program on hippocampal volume and self-reported PA in Latinos. Participants were randomized to the BAILAMOS dance program or waitlist control group (N = 14, n = 10 intervention, n = 4 waitlist, 67 ± 6.1 years old, 70% female). Hippocampal volumes were derived from Magnetic Resonance Imaging whole-brain T1-weighted images. Participants self-reported PA through the Community Healthy Activities Model Program for Seniors Physical Activity Questionnaire for older adults. There were no statistically significant changes in hippocampal volume preintervention to postintervention (F[1, 8] = .077, p = .79, d = .05) and no associations between PA change and hippocampal volume (F[4, 13] = .71, p = .61). However, dance participants self-reported more PA (d = .54) compared to the control. These findings demonstrate that the BAILAMOS dance program did not decrease hippocampal atrophy; however, it increased self-reported PA. Future studies should include longer and more cognitively demanding interventions to determine whether dance can reduce cognitive decline through hippocampal changes.
海马体萎缩与认知能力下降有关。身体活动（PA）可以逆转海马体的损失。本研究调查了为期 4 个月的 BAILAMOS 舞蹈计划对拉丁裔人群海马体体积和自我报告的 PA 的影响。参与者被随机分配到 BAILAMOS 舞蹈计划或候补名单对照组（N = 14，n = 10 干预组，n = 4 候补名单组，67 ± 6.1 岁，70%为女性）。海马体体积来自磁共振成像全脑 T1 加权图像。参与者通过社区健康活动模式计划老年人物理活动问卷（用于老年人的物理活动问卷）自我报告 PA。从干预前到干预后，海马体体积没有统计学上的显著变化（F[1, 8] =.077，p =.79，d =.05），并且 PA 变化与海马体体积之间没有关联（F[4, 13] =.71，p =.61）。然而，与对照组相比，舞蹈参与者自我报告的 PA 更多（d =.54）。这些发现表明，BAILAMOS 舞蹈计划并没有减少海马体萎缩；然而，它增加了自我报告的 PA。未来的研究应该包括更长时间和更具认知挑战性的干预措施，以确定舞蹈是否可以通过海马体变化来减缓认知能力下降。
