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Volume 08 Journal of Novel Physiotherapies Rehabilitation Medicine 2018
May 18-19, 2018
May 18-19, 2018 Osaka, Japan
7th World Congress on
Physical Medicine and Rehabilitation
Comparison of the fatigue effect on lower extremity movements in subjects with or without chronic ankle
instability during a lateral hopping task.
Ting Chun Huang
Chiung Yu Cho National Cheng Kung University, Taiwan.
Research Objectives: Ankle sprain is one of most common sport injury. Fatigue was regarded as the risk factor which may
increase the incidence of ankle sprain. Lots of researchers have investigated the pathological changes on the ankle sprain side;
however, few studies have discussed the compensating mechanism on the sound side. Therefore, the purpose of this study was
to compare the movement patterns in both lower extremities between the athletes with chronic lateral ankle sprain and the
healthy participants during a lateral hopping task before and after fatigue.
Methodology: Twenty-six athletes were recruited from school or stadium. Half were subjects with chronic ankle sprain. After
the warm-up exercise, the subjects may practice the lateral hopping task couple times until they were familiar with it. After
performing the lateral hopping task, a fatigue task was performed. After the fatigue task, subjects performed the same task as
before. The motion of the lower extremities was captured by the Qualisys System during the lateral hop task, and the data were
analyzed for 200ms pre- and post-initial contact. Independent t test was used to analyze the baseline data (e.g. height, body
weight) between control group and chronic ankle instability group. Three-way ANOVA was used to analyze the dependent
variable, all results were analyzed by SPSS version 17.0 (SPSS, Inc., Chicago, IL, USA). The significant level was set at p<0.05.
Result: Currently, we analyzed 16 subjects. For the ankle sagittal plane motion at initial contact, there was no interaction effect
on time, group, and side factors. For the ankle frontal plane motion, there was a main effect on side (p=.028), and a significant
interaction for group X time X side in ankle instability group (p=0.04). Post hoc analysis was processed. The ankle sprain group
had a more-inverted ankle on the injury side than the sound side (+5.99°) at initial contact before fatigue task (p=.093). In
normal group, they had a more-inverted ankle on their dominant side than their non-dominant side (+8.24°) after fatigue task,
and the result stated significant difference (p=.021). Conclusion: Although there was no significant difference between groups
in two sides of ankle motion at initial contact for both before and after fatigue task, some differences were found subsequently.
The ankle sprain group had a more-inverted ankle on the injury side than the sound side (+5.99°) at initial contact before
fatigue task. In the normal group, they had a more-inverted ankle on their dominant side than their non-dominant side at
initial contact after fatigue task, and these differences may be related to increased risk of ankle injury.
Biography
Ting Chun Huang is a senior of master’s degree student in Postural and Balance Lab in the Department of Physical Therapy in National Cheng Kung University in
Taiwan. He is a physical therapist and usually participates in sports events for providing athletes physical therapy treatment in international competitions, such as
WBSC IV U-12 Baseball World Cup® 2017. His advisor is Dr. Chiung-Yu Cho, who is the associate professor in the Department of Physical Therapy and specializes
in “Motor Control and Cumulative Trauma Disorder’’. Professor Cho has published more than 70 papers in reputed journals and has been serving as an editorial
board member of repute.
Ting Chun Huang, J Nov Physiother 2018, Volume 8
DOI: 10.4172/2165-7025-C2-026