Department of Rehabilitation and Movement Science, University of Vermont, Burlington, VT 05405, USA.
Department of Health, Exercise, and Sports Sciences, University of New Mexico, Albuquerque, NM 87131, USA.
Int J Environ Res Public Health. 2022 Apr 14;19(8):4768. doi: 10.3390/ijerph19084768.
In this secondary analysis of a light-intensity physical activity intervention, we hypothesized that older cancer survivors would self-select a faster walking cadence to meet their daily step goals. Average steps/day and free-living walking cadence were measured in 41 participants (age 69 ± 3.1 years) with an ActivPAL monitor worn 7 days pre- and post-intervention. Besides peak and average walking cadence, stepping patterns associated with ambulatory intensity were sorted in cadence bands of 20 steps/min from 40−59 (incidental movement) to ≥120 steps/min (fast locomotor movement). Compared to the waitlist Control group (n = 17), the Intervention group (n = 24) increased their peak 30-min cadence (4.3 vs. 1.9 steps/minute; p = 0.03), average 10-min cadence (4.1 vs. −6.6 steps/minute; p = 0.04), and average 30-min cadence (5.7 vs. −0.8 steps/minute, p = 0.03). Steps taken in cadence bands denoting moderate-intensity physical activity (100−119 steps/min) increased by 478 (interquartile range (IQR): −121 to 1844) compared to decreasing by 92 (IQR: −510 to 181) steps/day for the intervention and Control groups, respectively (p < 0.01). Evaluation of free-living walking cadence and patterns of ambulatory behavior can inform future interventions targeting behavior change, especially in those populations most at risk for reduced physical activity and vulnerable to mobility deficits and loss of independence.
在这项低强度体力活动干预的二次分析中，我们假设老年癌症幸存者会自行选择更快的步频来达到日常的步数目标。在干预前和干预后 7 天，使用 ActivPAL 监测器测量 41 名参与者（年龄 69 ± 3.1 岁）的平均每日步数和自由生活步频。除了峰值和平均步频外，还根据与活动强度相关的步频将步行模式分为 20 步/分钟的步频带，从 40-59（偶然运动）到≥120 步/分钟（快速移动运动）。与等待名单对照组（n = 17）相比，干预组（n = 24）增加了他们的峰值 30 分钟步频（4.3 对 1.9 步/分钟；p = 0.03）、平均 10 分钟步频（4.1 对-6.6 步/分钟；p = 0.04）和平均 30 分钟步频（5.7 对-0.8 步/分钟，p = 0.03）。在代表中等强度体力活动（100-119 步/分钟）的步频带中，与干预组和对照组相比，分别增加了 478（四分位距（IQR）：-121 至 1844）和减少了 92（IQR：-510 至 181）步/天（p < 0.01）。评估自由生活步频和活动行为模式可以为未来针对行为改变的干预措施提供信息，特别是在那些活动量减少、易受行动能力下降和丧失独立性影响的风险最高的人群中。
