由于网络的普及,如今老年人在家中学习电脑或上网已是平常事。但上网老年人的共同体会是:由于长时间使用显示器、键盘、鼠标和电话,常常会感到身心疲惫、脾气急躁、腰酸腿痛,并且食欲不振。为此,医学专家提出以下3条原则:一是应保持自然的脊柱弯曲度。即调整椅子靠背,使之稳稳 Due to the popularity of the Internet, it is now commonplace for the elderly to learn about the Internet at home or at home. However, the common understanding of the elderly on the Internet is that due to prolonged use of monitors, keyboards, mice and phones, they often feel physically and mentally exhausted, irritable, backache, and loss of appetite. To this end, medical experts put forward the following three principles: First, maintain the curvature of the natural spine. That is, adjust the chair back to make it stable