背景: 醫療人員從事職業而引起的背痛在過去的文獻中己經有充份的證據，然而佷少研究有去評估背痛與心肺復甦術之間的關係。
目的：比較以跪坐、站立於小板凳以及站立此三種不同姿勢進行心肺復甦術對背痛及施救者疲乏之影響。
研究方法:此研究設計為前瞻性隨機研究，共有24位教學醫院之急診醫療人員參與； 每位受測者以隨機決定，分別以跪坐、站立於小板凳以及站立三種不同的急救姿勢在假人身上操作心肺復甦術，每次操作間隔一個星期。操作時，受測者被要求以每分鐘壓胸100次且持續10分鐘之久。操作24及48小時後，需填寫一份「簡式-簡易疼痛量表」以便評估背痛的強度以及疼痛對日常生活干擾情形。此外，我們利用角度測量器貼在參與者的下背部，去監測彎曲角度。
結果:心肺復甦術24小時後的背痛總分，以站立姿勢顯著高於跪坐及站立在小板凳，其分數分別為11.0 (6.5~16.8)、3.5 (1.3~8.0)以及7.0 (3.0~10.5)，p < 0.001。而生活干擾總分方面，也是站立姿勢最高，其分數分別為5.0 (0.3~9.0)、0.0 (0.0~2.8)以及0.5 (0.0~5.8)，p = 0.004。而48小時後的背痛總分及生活干擾總分也是以站立姿勢最為顯著，但其分數較24小時下降。另一方面，以跪坐姿勢進行心肺復甦術能維持有效的胸部按壓長達六分鐘之久，而站立及站立在小板凳分別只能維持3分鐘和不及4分鐘。此外，背部以及手肘的彎曲角度間距，也是以站立姿態操作心肺復甦術時的角度間距顯著大於其他兩種姿勢。
結論: 此研究發現醫療人員操作心肺復甦術長逹10分鐘之久會引起背痛。其中，站立姿勢是最不好的急救姿勢，會引起最嚴重的背痛，且較早發生施救者疲乏的現象。為了維持高品質心肺復甦術，我們建議若是施救者只有一位，在操作心肺復甦術可採用跪坐的姿勢，因為它能維持較長時間的有效胸部按壓及較不會引起背痛。若是有經驗的施救者有兩位以上，則建議在以跪坐姿勢進行心肺復甦術時，應每六分鐘換手一次，其餘兩種姿勢則應每3分鐘換手一次。以避免施救疲乏及過多中斷。

Background: Back pain as an occupational disorder of health care providers has been well documented in the literature, but few studies evaluated the association between back pain and cardiopulmonary resuscitation (CPR).
Objective: Comparison of back pain and rescuer fatigue following CPR with different postures, including kneeling, standing on taboret, and standing.
Methods: We conducted a prospective randomized study on 24 emergency department personnel recruited from a teaching hospital. Each participant performed CPR on a manikin with kneeling, standing on a taboret, and standing postures in one week apart, and the sequence of postures was assigned through a randomization process. In each session, the participant was asked to perform fast and effective cardiac massages at a rate of 100 times per minutes for 10 minutes and then fill out a Brief Pain Inventory Short-form 24 hours and 48 hours later. In addition, we attached a goniometer to the participant to monitor the motion.
Results: The total severity pain score after CPR on 24 hours, was significant higher in standing posture than standing on taboret and standing, the score were 11.0 (6.5~16.8), 3.5 (1.3~8.0), and 7.0 (3.0~10.5), p < 0.001, so was the total social interference score 5.0 (0.3~9.0), 0.0 (0.0~2.8), and 0.5 (0.0~5.8), p = 0.004. The same findings with declined of pain and social interference scores were found on 48 hours. On the other hand, CPR with kneeling could maintain adequate compression up to 6 minutes, but CPR with the other two postures could last for 3 and no more than 4 minutes only. Moreover, the ranges of motion of elbow and back during CPR with standing were higher than those with the other two postures.
Conclusion: The current study found that CPR for 10 minutes might induce back pain among health care providers. Standing was the worst posture to perform CPR because it not only cause back pain but also lead to inadequate chest compression sooner. In order to maintain high quality of CPR, we recommend that if the rescuer is alone, CPR with kneeling posture should be taken because it may keep a longer duration of effective compression and is the least likely to cause back pain. If two or more experience rescuers are available, we recommend switching the rescuers every 6 minutes with kneeling posture, but every 3 minutes with standing and standing on taboret to avoid rescuer fatigue and minimize interruptions.

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