scholarly journals The Effects of Plyometric Training on Performance and the Feed-forward Activation of Calf Muscles in Active Females with Functional Ankle Instability in Single Leg Drop Landing

2017 ◽  
Vol 25 (2) ◽  
pp. 42-54
Author(s):  
Somayeh Momeni ◽  
Amirhoseyn Barati ◽  
Amir Letafatkar ◽  
Aliashraf Jamshidi ◽  
Fariborz Hovanlo ◽  
...  
Keyword(s):  
Ankle Instability ◽  
Plyometric Training ◽  
Functional Ankle Instability ◽  
Feed Forward ◽  
Drop Landing ◽  
Calf Muscles

scholarly journals Effect of a Four-week Core Stability Training Program on the Kinetic Parameters in Athletes With Functional Ankle Instability During Single-leg Drop Landing

2020 ◽  
Vol 11 (1) ◽  
pp. 33-42
Author(s):  
Narges Pirmohammadi ◽  
◽  
Elham Shirzad ◽  
Hooman Minounejad ◽  
◽  
...  
Keyword(s):  
Kinetic Parameters ◽  
Ankle Instability ◽  
Core Stability ◽  
Analysis Of Covariance ◽  
Functional Ankle Instability ◽  
Drop Landing ◽  
Post Test ◽  
Stability Training ◽  
And Control ◽  
Experimental Group

Introduction: This study aimed to investigate the effect of a 4-week core stability training program on landing kinetic parameters in athletes with functional ankle instability during a single-leg drop landing exercise. Methods: This study used a pre-post quasi-experimental design and was conducted in the biomechanics laboratory. A total number of 24 athletes with functional ankle instability participated in two experimental (n=12) and control (n=12) groups. The experimental group performed core stability training for 4 weeks. The kinetic variables (maximum vertical Ground-Reaction Force [GRF], maximum shear GRF, and time to peak vertical GRF) were measured with force plate at the frequency of 400 Hz, in the pre-test and post-test. The obtained data were compared using Analysis of Covariance (ANCOVA) and multivariate analysis of covariance MANCOVA in SPSS V. 18. Results: In the experimental group, all variables significantly differ between the pre-test and post-test. Also, the ANCOVA and MANCOVA indicated significant differences between the experimental and control groups in all variables. Conclusion: The results indicated that the core stability training improved the kinetic parameters of landing in people with functional ankle instability; thus, it can reduce the re-injury risk of the ankle.

scholarly journals Effects of balance and plyometric training on balance control among individuals with functional ankle instability

2020 ◽  
Vol 28 (2) ◽  
pp. 38-45
Author(s):  
Aileen Surakhamhaeng ◽  
Sunee Bovonsunthonchai ◽  
Roongtiwa Vachalathiti
Keyword(s):  
Ankle Instability ◽  
Balance Control ◽  
Plyometric Training ◽  
Functional Ankle Instability

scholarly journals Lower Extremity Biomechanics in Athletes With Ankle Instability After a 6-Week Integrated Training Program

2014 ◽  
Vol 49 (2) ◽  
pp. 163-172 ◽  
Author(s):  
Pi-Yin Huang ◽  
Wen-Ling Chen ◽  
Cheng-Feng Lin ◽  
Heng-Ju Lee
Keyword(s):  
Training Program ◽  
Postural Sway ◽  
Ankle Instability ◽  
Control Group ◽  
Controlled Clinical Trial ◽  
Plyometric Training ◽  
Lower Limb Injury ◽  
Men 2 ◽  
Drop Landing ◽  
Drop Landings

Context: Plyometric exercise has been recommended to prevent lower limb injury, but its feasibility in and effects on those with functional ankle instability (FAI) are unclear. Objective: To investigate the effect of integrated plyometric and balance training in participants with FAI during a single-legged drop landing and single-legged standing position. Design: Randomized controlled clinical trial. Setting: University motion-analysis laboratory. Patients or Other Participants: Thirty athletes with FAI were divided into 3 groups: plyometric group (8 men, 2 women, age = 23.20 ± 2.82 years; 10 unstable ankles), plyometric-balance (integrated)–training group (8 men, 2 women, age = 23.80 ± 4.13 years; 10 unstable ankles), and control group (7 men, 3 women, age = 23.50 ± 3.00 years; 10 unstable ankles). Intervention(s): A 6-week plyometric-training program versus a 6-week integrated-training program. Main Outcome Measure(s): Postural sway during single-legged standing with eyes open and closed was measured before and after training. Kinematic data were recorded during medial and lateral single-legged drop landings after a 5-second single-legged stance. Results: Reduced postural sway in the medial-lateral direction and reduced sway area occurred in the plyometric- and integrated-training groups. Generally, the plyometric training and integrated training increased the maximum angles at the hip and knee in the sagittal plane, reduced the maximum angles at the hip and ankle in the frontal and transverse planes in the lateral drop landing, and reduced the time to stabilization for knee flexion in the medial drop landing. Conclusions: After 6 weeks of plyometric training or integrated training, individuals with FAI used a softer landing strategy during drop landings and decreased their postural sway during the single-legged stance. Plyometric training improved static and dynamic postural control and should be incorporated into rehabilitation programs for those with FAI.

scholarly journals Effects of Different Ankle Supports on the Single-Leg Lateral Drop Landing Following Muscle Fatigue in Athletes with Functional Ankle Instability

2020 ◽  
Vol 17 (10) ◽  
pp. 3438 ◽  
Author(s):  
Cheng-Chieh Lin ◽  
Shing-Jye Chen ◽  
Wan-Chin Lee ◽  
Cheng-Feng Lin
Keyword(s):  
Muscle Fatigue ◽  
Ankle Instability ◽  
Reaction Force ◽  
Vertical Ground Reaction Force ◽  
Functional Ankle Instability ◽  
Kinesio Tape ◽  
Drop Landing ◽  
Ankle Brace ◽  
Induced Changes ◽  
The Impact

Background: Ankle support has been utilized for athletes with functional ankle instability (FAI), however, its effect on the landing performance during muscle fatigue is not well understood. This study aimed to examine the effects of ankle supports (ankle brace vs. Kinesio tape) on athletes with FAI following fatigued single-leg landing. Methods: Thirty-three young FAI athletes (CAIT scores < 24) were randomly allocated to control (Cn), ankle brace (AB) and Kinesio tape (KT) groups. All athletes performed single-leg lateral drop landings following ankle fatigue protocol. The fatigue-induced changes in kinetic parameters were measured among three groups. Results: A significant increase in peak vertical ground reaction force (vGRF) was found in the AB group (0.12% body weight (BW)) compared to that of the KT (0.02% BW) and Cn (median = 0.01% BW) groups. Significant decrease in both COP medial-lateral (ML) and anterior-posterior (AP) ranges were also found in the KT group (median = −0.15% foot width (FW) & median = −0.28% foot length (FL)) than those of the Cn group (median = 0.67% FW& median = 0.88% FL). Conclusions: Ankle braces might hamper the ability to absorb the impact force during landing. On the other hand, Kinesio tape might be beneficial for the postural control during landing.

scholarly journals Effects of Plyometric and Balance Training on Neuromuscular Control of Recreational Athletes with Functional Ankle Instability: A Randomized Controlled Laboratory Study

2021 ◽  
Vol 18 (10) ◽  
pp. 5269
Author(s):  
Pi-Yin Huang ◽  
Amornthep Jankaew ◽  
Cheng-Feng Lin
Keyword(s):  
Ankle Instability ◽  
Balance Training ◽  
Absolute Error ◽  
Position Sense ◽  
Joint Position Sense ◽  
Joint Position ◽  
Plyometric Training ◽  
Plantar Flexors ◽  
Drop Landing ◽  
Before And After

Plyometric exercise has been suggested for knee injury prevention in sports participation, but studies on ankle plyometric training are limited. This study aims to investigate the change of joint position sense and neuromuscular activity of the unstable ankle after six-week integrated balance/plyometric training and six-week plyometric training. Thirty recreational athletes with functional ankle instability were allocated into three groups: plyometric group (P) vs. plyometric integrated with balance training group (BP) vs. control group (C). Ankle joint position sense, integrated electromyography (EMG), and balance adjusting time during medial single-leg drop-landing tasks were measured before and after the training period. Following the six-week period, both training groups exhibited a lower absolute error in plantar flexion (P group: pre: 3.79° ± 1.98°, post: 2.20° ± 1.31°, p = 0.016; BP group: pre: 4.10° ± 1.87°, post: 2.94° ± 1.01°, p = 0.045), and the integrated group showed a lower absolute error in inversion angles (pre 2.24° ± 1.44° and post 1.48° ± 0.93°, p = 0.022), and an increased integrated EMG of ankle plantar flexors before landing. The plyometric group exhibited a higher integrated EMG of the tibialis anterior before and after landing (pre: 102.88 ± 20.93, post: 119.29 ± 38.33, p = 0.009 in post-landing) and a shorter adjusting time of the plantar flexor following landing as compared to the pre-training condition (pre: 2.85 ± 1.15 s, post: 1.87 ± 0.97 s, p = 0.006). In conclusion, both programs improved ankle joint position sense and muscle activation of the ankle plantar flexors during single-leg drop landing. The plyometric group showed a reduced adjusting time of the ankle plantar flexor following the impact from drop landing.

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