I'd like to point out that when looking only at persons aged <60 OR persons with a BMI >25, the strongest (upper) third group did NOT have the lowest death rate

I'd like to point out that when looking only at persons aged <60 OR persons with a BMI >25, the strongest (upper) third group did NOT have the lowest death rate in this study. Instead it was the "middle" group in both cases. Admittedly with not much of a difference from the upper group. And again, this study did not claim causation between strength and mortality, but association. Although if we just play with the thought and assume a causation between strength and mortality and if you are under 60 years of age or have a BMI over 25 and you want to minimize your mortality rate, your one-repetition maximum (1RM) strength goals in a lifting weight / body weight ratio would be x: Bench press: 0.7 < x < 1.1 Leg press: 1.4 < x < 1.9