Figure 2

a Outcome measures from Group 1 and Group 2 in the 8-foot up-and-go test at four time-points: At baseline (1); after 6-month immediate intervention and control phase (2); after completed crossover phase and delayed intervention phase (3); after completed follow-up 2 phase by Group 1 and follow-up 1 phase by Group 2 (4). 2b Outcome measures from Group 1 and Group 2 in knee-extension strength performance test at four time-points: At baseline (1); after 6-month immediate intervention and control phase (2); after completed crossover phase and delayed intervention phase (3); after completed follow-up 2 phase by Group 1 and follow-up 1 phase by Group 2 (4). 2c Outcome measures from Group 1 and Group 2 in 6 MW endurance performance test at four time-points: At baseline (1); after 6-month immediate intervention and control phase (2); after completed crossover phase and delayed intervention phase (3); after completed follow-up 2 phase by Group 1 and follow-up 1 phase by Group 2 (4).