Haskin-Popp C, Nazareno D, Wegner J, Franklin B A, Schafer J, Gordon S, Timmis G C
Department of Cardiac Rehabilitation, William Beaumont Hospital, Royal Oak, Michigan 48009, USA.
Am J Cardiol. 1998 May 15;81(10):1243-5. doi: 10.1016/s0002-9149(98)00123-4.
Lawn mowing approximates 4 to 6 METs and may evoke heart rate and systolic blood pressure responses that approach and exceed those attained during maximal exercise testing. The excessive cardiac demands may be deceptively camouflaged by the moderate aerobic requirements and perceived effort.
修剪草坪相当于4到6梅脱（代谢当量），可能会引起心率和收缩压反应，接近甚至超过最大运动测试时达到的水平。适度的有氧需求和主观用力程度可能会掩盖这种过高的心脏负荷。
