Ward John S, Coats Jesse, Ramcharan Michael, Humphries Kelley, Tong Tammy, Chu Cheuk
Assistant Professor/Research Fellow, Department of Physiology and Chemistry, Texas Chiropractic College, Pasadena, TX.
J Chiropr Med. 2012 Dec;11(4):233-41. doi: 10.1016/j.jcm.2012.10.005.
The purpose of this study was to determine if thoracolumbar chiropractic manipulative therapy (CMT) had an immediate impact on exercise performance by measuring blood lactate concentration, exercise heart rate, and rating of perceived exertion during a treadmill-based graded exercise test (GXT).
Ten healthy, asymptomatic male and 10 female college students (age = 27.5 ± 3.7 years, height = 1.68 ± 0.09 m, body mass = 71.3 ± 11.6 kg: mean ± SD) were equally randomized into an AB:BA crossover study design. Ten participants were in the AB group, and 10 were in the BA group. The study involved 1 week of rest in between each of the 2 conditions: A (prone Diversified T12-L1 CMT) vs B (no CMT). Participants engaged in a treadmill GXT 5 minutes after each week's condition (A or B). Outcome measures were blood lactate concentration, exercise heart rate, and rating of perceived exertion monitored at the conclusion of each 3-minute stage of the GXT. The exercise test continued until the participant achieved greater than 8 mmol/L blood lactate, which correlates with maximal to near-maximal exercise effort. A dependent-samples t test was used to make comparisons between A and B conditions related to exercise performance.
No statistically significant difference was shown among any exercise response dependent variables in this study.
The results of this research preliminarily suggest that CMT to T12-L1 does not immediately impact exercise performance during a treadmill-based GXT using healthy college students.
本研究的目的是通过在基于跑步机的分级运动试验（GXT）期间测量血乳酸浓度、运动心率和主观用力感觉评分，来确定胸腰椎整脊手法治疗（CMT）是否对运动表现有即时影响。
将10名健康、无症状的男性和10名女性大学生（年龄 = 27.5 ± 3.7岁，身高 = 1.68 ± 0.09米，体重 = 71.3 ± 11.6千克：均值 ± 标准差）平均随机分为AB:BA交叉研究设计。10名参与者在AB组，10名在BA组。该研究在两种情况之间各休息1周：A（俯卧位T12 - L1节段的改良整脊手法）与B（无CMT）。参与者在每周的每种情况（A或B）后5分钟进行跑步机GXT。在GXT的每个3分钟阶段结束时监测的结果指标为血乳酸浓度、运动心率和主观用力感觉评分。运动试验持续进行，直到参与者的血乳酸浓度超过8 mmol/L，这与最大到接近最大运动强度相关。使用配对样本t检验对与运动表现相关的A和B两种情况进行比较。
本研究中任何运动反应相关变量之间均未显示出统计学上的显著差异。
本研究结果初步表明，对于健康大学生，在基于跑步机的GXT期间，T12 - L1节段的CMT不会立即影响运动表现。
