Abstract
Study Design: A within-subject design for the reliability of the multiple hop test and a between-groups design for the validity.
Objectives: To investigate the reliability and validity of a multiple hop test in patients with chronic ankle instability.
Background: Results of studies indicate that subjects with unstable ankle joints need significantly more time to stabilize the body when landing on the unstable ankle (Wikstrom, 2005; Ross, 2004). However the applied test protocols require sophisticated equipment.
Methods and Measures: 29 subjects with healthy ankle joints (mean age 22,1 years, mean body length 177,2 cm; mean body weight 68,7 kg) and 30 patients with chronic ankle instability (mean age 25 years, mean body length 177,3 cm, mean body weight 75,4 kg) performed twice the multiple hop test with a one-week time interval. Subjects had to hop and land with the same leg in a crossed direction indicated by 10 tape markers. The goal of the test was to avoid any postural correction when landing on the ankle. Before hopping to another marker subjects had to stand perfectly still. Stability control was studied using digital video images and the time (in sec.) needed to complete the test was assessed with a digital chronometer.
For the reliability, Intra Class Coefficients (ICCs) were calculated. For the between-groups comparison, an independent sample t- test was used with the significance level set at p <.05.
Results: The ICCs of both ankles was .87 in healthy subjects and ranged from .91 to .97 in patients. Patients (mean 41,2 sec. ± 12,5 sec) needed significantly more time (p= .000) to complete the test when compared to healthy subjects (mean 31,4 sec. ± 5,5 sec).
Conclusion: From our results, the multiple hop test is a valid tool to assess the quality of postural control in patients with chronic ankle instability
Objectives: To investigate the reliability and validity of a multiple hop test in patients with chronic ankle instability.
Background: Results of studies indicate that subjects with unstable ankle joints need significantly more time to stabilize the body when landing on the unstable ankle (Wikstrom, 2005; Ross, 2004). However the applied test protocols require sophisticated equipment.
Methods and Measures: 29 subjects with healthy ankle joints (mean age 22,1 years, mean body length 177,2 cm; mean body weight 68,7 kg) and 30 patients with chronic ankle instability (mean age 25 years, mean body length 177,3 cm, mean body weight 75,4 kg) performed twice the multiple hop test with a one-week time interval. Subjects had to hop and land with the same leg in a crossed direction indicated by 10 tape markers. The goal of the test was to avoid any postural correction when landing on the ankle. Before hopping to another marker subjects had to stand perfectly still. Stability control was studied using digital video images and the time (in sec.) needed to complete the test was assessed with a digital chronometer.
For the reliability, Intra Class Coefficients (ICCs) were calculated. For the between-groups comparison, an independent sample t- test was used with the significance level set at p <.05.
Results: The ICCs of both ankles was .87 in healthy subjects and ranged from .91 to .97 in patients. Patients (mean 41,2 sec. ± 12,5 sec) needed significantly more time (p= .000) to complete the test when compared to healthy subjects (mean 31,4 sec. ± 5,5 sec).
Conclusion: From our results, the multiple hop test is a valid tool to assess the quality of postural control in patients with chronic ankle instability
| Original language | English |
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| Title of host publication | Conference Proceedings of the 3Th International Ankle Symposium Dublin |
| Publication status | Published - 2006 |
| Event | Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet - Stockholm, Sweden Duration: 21 Sept 2009 → 25 Sept 2009 |
Publication series
| Name | Conference Proceedings of the 3Th International Ankle Symposium Dublin |
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Conference
| Conference | Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet |
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| Country/Territory | Sweden |
| City | Stockholm |
| Period | 21/09/09 → 25/09/09 |
Keywords
- ankle instability. hop test, postural control, val