Paraná Technological Federal University, Department of Physical Education, Rua Pedro Gusso, 2601, NeoVille, Curitiba, Praraná 81.310-900, Brazil.
Federal University of Paraná, Department of Physical Education, Coronel Heráclito dos Santos, 100, Jardim das Américas, Curitiba, Paraná 81530-000, Brazil.
Gait Posture. 2024 Sep;113:528-533. doi: 10.1016/j.gaitpost.2024.07.298. Epub 2024 Aug 10.
Running exposes the body to physiological and mechanical stresses that generate musculoskeletal injuries, such as low back pain due to large spinal loading. Increasing running cadence may reduce impact forces and spinal shrinkage.
This study aimed to determine the relationship between spinal loading and running cadence.
This cross-sectional study included 15 runners from the local community (36 ± 11 years; 23 ± 2 kg.m, and 8 ± 9 years of running experience) who ran for 30 min (R30) and 60 min (R60) at a constant speed (10 km.h). The spinal loading was assessed via fine stature variation measurements before the run (baseline) at R30 and R60. Cadence was monitored via a wristwatch. The cadence ranged from 150 to 180 steps.min. A t-test was used to compare stature loss between R30 and R60 (relative to baseline), and a stepwise linear regression equation was used to identify the relationship between cadence and stature variation in each instant.
There was a stature loss throughout the race (R30 = 5.27 ± 1.92 mm and R60 =7.51 ± 2.51 mm). A linear regression analysis revealed a negative relationship between stature loss and cadence, indicating that running at a faster cadence produces smaller spinal loading than running at slower cadences after R60 (R = 0.38; p<0.05).
Increasing running cadence might cause less spinal loading than running with a slower cadence, which may reduce the risk of injury and back disorders in runners.
跑步会使身体承受生理和机械压力，从而导致肌肉骨骼损伤，例如由于脊柱负重过大导致的下背痛。增加跑步步频可能会减少撞击力和脊柱缩短。
本研究旨在确定脊柱负重与跑步步频之间的关系。
这是一项横断面研究，共纳入了 15 名来自当地社区的跑步者（36±11 岁；23±2kg.m，以及 8±9 年的跑步经验），他们以恒定速度（10km.h）分别跑 30min（R30）和 60min（R60）。在跑步前（基线）、R30 和 R60 通过精细身高变化测量来评估脊柱负重。通过手表监测步频。步频范围为 150-180 步.min。使用 t 检验比较 R30 和 R60 之间的身高损失（相对于基线），并使用逐步线性回归方程来确定每个时刻步频与身高变化之间的关系。
整个跑步过程中身高都有损失（R30=5.27±1.92mm，R60=7.51±2.51mm）。线性回归分析显示，身高损失与步频呈负相关，表明在 R60 后，以更快的步频跑步比以较慢的步频跑步产生的脊柱负重更小（R=0.38；p<0.05）。
增加跑步步频可能比以较慢的步频跑步产生的脊柱负重更小，这可能会降低跑步者受伤和背部疾病的风险。
