Table 9.
Reliability and validity measures for core strength tests.
| Core strength | Measured variable | Reliability | Construct validity (correlation with self-reported climbing ability) |
|---|---|---|---|
| Super-man (86) | Con.-ecc. MS | Inter-session: ICC = 0.87 (86) | – |
| Momentum absorption (15, 32) | Con. MS | – | r = -.01 –.31 (15) |
| Core rotation test (86) | Con. MS | – | – |
| Body lock off (86) | Iso. SE | Inter-session: ICC = .79 (86) | – |
| Plank (14) | Iso. SE | – | – |
| Sorensen test (4, 96) | Iso. SE | – | – |
| Kraus Weber test battery (96) | Iso. SE | – | – |
| Sit-ups (31) | Con.-ecc- SE | – | – |
| Curl-ups (3, 97, 114) | Con.-ecc- SE | – | – |
| Fishing kicks (15, 32), (86) | Con.-ecc. SE | Inter-session: ICC = 0.91 (86) | r = -.42—-.12 (15) |
| Leg raise (14, 95, 96) | Core + lower leg iso. SE | – | r = .30 –.45 (95) |
MS, maximum strength; ME, muscular endurance; iso., isometric; con., concentric; ecc, eccentric.