Table 2. Interrater reliability and 95% limits of agreement between Raters 1 and 2 for total, single and contraction-phase specific time-under-tension.
| Mean rater 1 seconds (±SD) | Mean rater 2 seconds (±SD) | Mean difference between raters, seconds (95% CI) | Intraclass correlation (95% CI) | 95% Limits of agreement (seconds) | Agreement (percentage of mean TUT from stretch-sensor) | |
|---|---|---|---|---|---|---|
| Total TUT (n=60) | 49.28 (12.9) | 49.50 (13.2) | -0.23 (-0.53-0.08)** | 1.00 (0.99-1.00) | -2.11-2.56 | 4.7% |
| Single repetition TUT (n=600) | 4.93 (2.11) | 4.95 (2.14) | -0.02 (-0.04-0.00)* | 0.99 (0.99-0.99) | -0.46-0.50 | 9.7% |
| Total concentric TUT (n=60) | 17.66 (5.30) | 18.06 (5.39) | -0.40 (-0.52--0.28)* | 0.99 (0.96-1.00) | -1.32-0.51 | 5.2% |
| Total eccentric TUT (n=60) | 29.02 (7.23) | 28.87 (7.41) | 0.15 (-0.15-0.45)** | 0.99 (0.98-1.00) | -2.40-2.10 | 7.7% |
| Concentric TUT (n=600) | 1.77 (1.02) | 1.81 (1.02) | -0.04 (-0.05--0.03)* | 0.99 (0.99-0.99) | -0.28-0.10 | 13.6% |
| Eccentric TUT (n=600) | 2.90 (1.43) | 2.89 (1.43) | 0.02 (0.00-0.03)** | 0.99 (0.99-0.99) | -0.41-0.44 | 14.5% |
Abbreviations: TUT: Time-under-tension
*
p<0.05
**
p>0.05