加强锻炼被证明与增强体质密切相关。因此适度的锻炼，即使是每天30分钟的

加强锻炼被证明与增强体质密切相关。因此适度的锻炼，即使是每天30分钟的缓慢散步，都可能降低老年人突发心脏病的风险

結果 (英文) 1:

Exercise proves is closely related to health. Moderate exercise, even the slow walking 30 minutes a day, can reduce the risk of elderly heart attack

結果 (英文) 2:

Strengthening exercises proved to be closely related to enhance physical fitness. Therefore, moderate exercise, even 30 minutes a day walking slowly, may reduce the risk of heart attack in the elderly

結果 (英文) 3:

Strengthening exercise proved to be closely related to physical fitness. So moderate exercise, even a 30 minute walk a day, may reduce the risk of heart attack in older people.