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Table 1 Calf exercise dosage for each group

From: LOAD-intensity and time-under-tension of exercises for men who have Achilles tendinopathy (the LOADIT trial): a randomised feasibility trial

  High Load Low Load
  with High TUT
(Group 1)
with Low TUT
(Group 2)
with High TUT
(Group 3)
with Low TUT
(Group 4)
Load intensity 6 RM 6 RM 18 RM 18 RM
Repetition 6 6 18 18
Sets 4 4 4 4
Contraction time/rep 3 s concentric
3 s eccentric
1 s concentric
1 s eccentric
3 s concentric
3 s eccentric
1 s concentric
1 s eccentric
Rest in between reps No No No No
Contraction time per set 36 s 12 s 108 s 36 s
Total contraction time 288 s 96 s 864 s 288 s
Volitional muscular failure Yes Yes Yes Yes
Range of motion 0° to 15° DF
0° to 50° PF
0° to 15° DF
0° to 50° PF
0° to 15° DF
0° to 50° PF
0° to 15° DF
0° to 50° PF
  1. Abbreviations: TUT time-under-tension, RM repetition maximum, TUT time-under-tension, DF dorsiflexion, PF planter flexion, S seconds