Brożek Grzegorz M, Zejda Jan E, Jarosińska Agnieszka, Idzik Agnieszka, Lawson Joshua, Barański Kamil
Department of Epidemiology, College of Medicine, Medical University of Silesia, Katowice, Poland.
Department of Medicine and Canadian Center for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Canada.
Postepy Dermatol Alergol. 2018 Jun;35(3):314-316. doi: 10.5114/ada.2018.75434. Epub 2018 Apr 24.
It is recommended that spirometric testing in children be completed while sitting. Our experience indicates that children prefer standing during spirometry.
We sought to compare spirometric results obtained from the sitting (SIP) and standing (STP) positions.
Two testing sessions were performed in random order (SIP vs. STP: 30-45 min apart) in 118 children (7-13 years), attending one, randomly selected, primary school (response rate: 92%).
Acceptable quality was found in 77.9% of STP and 77.1% of SIP maneuvers. Higher values of spirometric variables on STP, compared to SIP, were obtained for forced vital capacity (FVC) (2.12 ±0.41 l vs. 2.11 ±0.39 l) and forced expiratory volume in 1 s (FEV) (1.78 ±0.36 l vs. 1.77 ±0.35 l) but the differences were not statistically significant. Relative between-position differences (RBPD) ≤ 5% were found with the following frequencies: FVC: 56.4%, FEV: 69.2%, PEF: 21.7%, and FEF: 24.3%. Similar patterns were found for FEF, FEF, and FEF. Relative between-position differences were related to age in the case of FEV ( = 0.005), FEF ( = 0.02), and FEF ( = 0.01) where older children had smaller RBPD. Forced vital capacity RBPD was lower ( = 0.01) in subjects with current wheeze; PEF RBPD were lower ( = 0.02) in children with asthma.
In epidemiological studies, the position of spirometric testing does not affect the results of lung function assessment.
建议儿童进行肺功能测试时采用坐姿完成。但我们的经验表明，儿童在肺功能测试时更喜欢站立姿势。
我们试图比较坐姿（SIP）和站姿（STP）下获得的肺功能测试结果。
对118名7至13岁儿童（来自一所随机选择的小学，应答率为92%）按照随机顺序进行了两次测试（SIP与STP：间隔30 - 45分钟）。
77.9%的STP动作和77.1%的SIP动作质量合格。与SIP相比，STP时的用力肺活量（FVC）（2.12±0.41升对2.11±0.39升）和第1秒用力呼气量（FEV）（1.78±0.36升对1.77±0.35升）的肺功能变量值更高，但差异无统计学意义。发现相对位置间差异（RBPD）≤5%的频率如下：FVC为56.4%，FEV为69.2%，呼气峰值流速（PEF）为21.7%，用力呼气流量（FEF）为24.3%。对于FEF、FEF和FEF也发现了类似模式。在FEV（P = 0.005）、FEF（P = 0.02）和FEF（P = 0.01）情况下，相对位置间差异与年龄有关，年龄较大的儿童RBPD较小。当前有喘息症状的受试者用力肺活量RBPD较低（P = 0.01）；哮喘儿童的PEF RBPD较低（P = 0.02）。
在流行病学研究中，肺功能测试的姿势不影响肺功能评估结果。
