Moreover, being 70–79 years of age (IRR = 3.89; 95% CI 1.61–9.44), being 80 years of age or older (IRR = 8.07; 95% CI 3.05–21.36), having osteoporosis (IRR = 1.76; 95% CI 1.02–3.03) and having low IGF-1 (IRR = 1.76; 95% CI 1.02–3.04) were also risk factors for the incidence of dynapenia. The gene discussed is IGF1; the disease is osteoporosis.