What is the recommended duration for each repetition when static stretching for an individual who is 65 years of age or older? a. 1 second isometric hold at end-range and 1 second on the eccentricb. 2 seconds isometric hold at end-range and 2 seconds on the eccentricc. 2 seconds isometric hold at end-range and 4 seconds on the eccentricd. 3 seconds isometric hold at end-range and 2 seconds on the eccentric