Department of Medicine, Division of Physical Medicine and Rehabilitation, University of British Columbia, Vancouver, BC, Canada.
International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, BC, Canada.
Spinal Cord. 2021 Mar;59(3):311-318. doi: 10.1038/s41393-020-00562-9. Epub 2020 Oct 10.
Cross-sectional construct validation study.
To test the construct validity of the Leisure Time Physical Activity Questionnaire for People with Spinal Cord Injury (LTPAQ-SCI) by examining associations between the scale responses and cardiorespiratory fitness (CRF) in a sample of adults living with spinal cord injury (SCI).
Three university-based laboratories in Canada.
Participants were 39 adults (74% male; M age: 42 ± 11 years) with SCI who completed the LTPAQ-SCI and a graded exercise test to volitional exhaustion using an arm-crank ergometer. One-tailed Pearson's correlation coefficients were computed to examine the association between the LTPAQ-SCI measures of mild-, moderate-, heavy-intensity and total minutes per week of LTPA and CRF (peak volume of oxygen consumption [V̇O] and peak power output [PO]).
Minutes per week of mild-, moderate- and heavy-intensity LTPA and total LTPA were all positively correlated with V̇O. The correlation between minutes per week of mild intensity LTPA and V̇O was small-medium (r = 0.231, p = 0.079) while all other correlations were medium-large (rs ranged from 0.276 to 0.443, ps < 0.05). Correlations between the LTPAQ-SCI variables and PO were also positive but small (rs ranged from 0.087 to 0.193, ps > 0.05), except for a medium-sized correlation between heavy-intensity LTPA and PO (r = 0.294, p = 0.035).
People with SCI who report higher levels of LTPA on the LTPAQ-SCI also demonstrate greater levels of CRF, with stronger associations between moderate- and heavy-intensity LTPA and CRF than between mild-intensity LTPA and CRF. These results provide further support for the construct validity of the LTPAQ-SCI as a measure of LTPA among people with SCI.
横断面结构验证研究。
通过检查在脊髓损伤（SCI）成人样本中，该量表的反应与心肺功能（CRF）之间的相关性，来测试脊髓损伤人群休闲时间体力活动问卷（LTPAQ-SCI）的结构效度。
加拿大的三个大学实验室。
参与者为 39 名成年人（74%为男性；M 年龄：42±11 岁），他们完成了 LTPAQ-SCI 以及使用臂式测功计进行的至力竭的分级运动测试。计算单尾 Pearson 相关系数，以检验 LTPAQ-SCI 中轻度、中度、高强度和每周总 LTPA 分钟数与 CRF（最大摄氧量[V̇O]和最大功率输出[PO]）之间的关联。
每周轻度、中度和高强度 LTPA 以及总 LTPA 分钟数与 V̇O 均呈正相关。每周轻度强度 LTPA 与 V̇O 之间的相关性为小-中（r=0.231，p=0.079），而其他所有相关性均为中-大（rs 范围为 0.276 至 0.443，p<0.05）。LTPAQ-SCI 变量与 PO 之间的相关性也是正相关但较小（rs 范围为 0.087 至 0.193，p>0.05），除了高强度 LTPA 与 PO 之间呈中大小相关（r=0.294，p=0.035）。
在 LTPAQ-SCI 上报告更高水平 LTPA 的 SCI 患者也表现出更高水平的 CRF，其中中高强度 LTPA 与 CRF 之间的相关性强于轻度 LTPA 与 CRF 之间的相关性。这些结果进一步支持 LTPAQ-SCI 作为 SCI 人群 LTPA 测量工具的结构效度。
