3 59 Normative Calf Muscle Strength-Endurance Values: An International Study Supplementary Table 2. Normative data for the HRET metrics for the left leg and right leg. Normative values HRET metrics (n=495) Median (95%RI)* Overall Female Male Left Repetitions (n) 24 (11 – 51) 23 (11 – 46) 26 (13-59) Total work (J) 1304 (537 – 2743) 1125 (467 – 2097) 1622 (663 – 3024) Total displacement (cm) 185 (80 – 379) 172 (74 – 353) 206 (97 – 418) Peak height (cm) 9.7 (5.5 – 13.8) 9.4 (5.4 – 12.8) 10.1 (5.5 – 14.0) Peak power (Watt) 249 (124 – 508) 213 (118 – 436) 281 (169 – 541) Vertical height loss (%) 20.7 (1.0 – 71.5) 19.4 (0.9 – 73.1) 20.9 (1.3 – 70.3) Right Repetitions (n) 25 (13 – 52) 24 (13 – 46) 27 (14 – 55) Total work (Joule) 1379 (599 – 2755) 1203 (544 – 2147) 1676 (623 – 3094) Total displacement (cm) 191 (86 – 377) 178 (83 – 347) 209 (91 – 431) Peak height (cm) 9.3 (5.2 – 13.0) 9.2 (5.5 – 12.5) 9.4 (4.9 – 14.0) Peak power (Watt) 242 (136 – 447) 218 (131 – 387) 290 (152 – 502) Vertical height loss (%) 21.4 (0.7 – 72.4) 19 (0.5 – 65.9) 23.9 (1.0 – 77.4) Abbreviations: HRET; Heel Rise Endurance Test, RI; Reference Interval. * Values are median with 95% reference interval (2.5th and 97.5th percentile) Supplementary Table 3. Difference in HRET metrics between the dominant and the non-dominant leg for both sides. Mean difference P-value Left Repetitions (n) -1.5 0.517 Total work (Joule) -93.2 0.211 Total displacement (cm) -17.9 0.164 Peak height (cm) -0.05 0.886 Peak power (Watt) -0.4 0.905 Vertical height loss (%) -0.16 0.398 Right Repetitions (n) -0.3 0.641 Total work (Joule) -8.5 0.608 Total displacement (cm) -6.1 0.311 Peak height (cm) 0.02 0.944 Peak power (Watt) 14.6 0.205 Vertical height loss (%) -1.6 0.567 Abbreviations: HRET; Heel Rise Endurance Test
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