Gundewall B, Liljeqvist M, Hansson T
Centrumhlsan i Gteborg AB, Askim, Sweden.
Spine (Phila Pa 1976). 1993 Apr;18(5):587-94. doi: 10.1097/00007632-199304000-00011.
The personnel at a geriatric hospital were randomized into two groups. One group was allowed to exercise during working hours to improve back muscle strength, endurance, and coordination. The other group did not participate in the exercise program and received no further advice or information. After 13 months, the training group had increased back muscle strength. One subject had been absent from work 28 days in the training group whereas 12 subjects had been absent 155 days from work because of low back pain in the control group (P < 0.004). The back pain complaints and intensity of back pain in the training group also decreased in a statistically significant way. Every hour spent by the physiotherapist on the training group reduced the work absence among the participants by 1.3 days, resulting in a cost/benefit ratio greater than 10.
一家老年医院的工作人员被随机分为两组。一组被允许在工作时间进行锻炼，以增强背部肌肉力量、耐力和协调性。另一组不参加锻炼计划，也没有得到进一步的建议或信息。13个月后，训练组的背部肌肉力量有所增强。训练组有一名受试者缺勤28天，而对照组有12名受试者因腰痛缺勤155天（P<0.004）。训练组的背痛投诉和背痛强度也有统计学意义的下降。物理治疗师在训练组每花费一小时，参与者的缺勤天数就减少1.3天，成本效益比大于10。
