Two Different Fatigue Protocols and Lower Extremity Motion Patterns During a Stop-Jump Task

Quammen, David; Cortés, Nelson; Lunen, Bonnie L. Van; Lucci, Shawn; Ringleb, Stacie I.; Oñate, James A.

doi:10.4085/1062-6050-47.1.32

Cited by 57 publications

(63 citation statements)

References 44 publications

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“…35). Surprisingly, significant reduction of the normalized reach distance mean were seen in the Group B (9.60%, p<0.001) and Group D (−1.36%, p<0.03).…”

Section: Resultsmentioning

confidence: 89%

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Effects of Kinesio<sup>®</sup> Taping on Dynamic Balance Following Fatigue: a Randomized Controlled Trial

Zulfikri

Justine

2017

Phys Ther Res

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ABSTRACT. The objective of the study was to determine the effects of Kinesio taping (KT) in inhibiting fatigue and preserving dynamic balance. Male recreational athletes were recruited to participate in this study. Participants were blinded from the group assignment and divided into four groups (Group A; KT and fatigue, Group B; no tape and fatigue, Group C; KT and no fatigue and Group D; no tape and no fatigue) using sequentially opaque, sealed envelopes. Pre and post measurements of Modified Star Excursion Balance Test ( SEBT ) composite score and normalized reach distance were used to measure dynamic balance. Adapted Functional Agility Short Term Fatigue Protocol (FAST-FP) was used to induce fatigue. KT was applied to rectus femoris, biceps femoris and medial gastrocnemius of the dominant leg. There was a significant change in the SEBT composite score between groups over time (p<0.05) and in time effect (p<0.05). The main effect comparing the SEBT composite score between the group was not significant (p=0.16). Group A (90.10±9.40) and Group B (86.14±10.50) attained lower mean for SEBT composite score compared to Group C (97.30±10.83) and Group D (98.13±9.47) suggests that fatigue have a diminishing effect on dynamic balance. KT application inhibit the effects of fatigue and preserved lateral and posterior direction of SEBT. KT application may lower the risk for injuries in the lateral and posterior directions following fatigue induction. Key words: dynamic balance, fatigue, Kinesio Taping, Star Excursion Balance Test (SEBT) (Phys Ther Res 00: 00-00, 0000)A large volume of literature has reported the high prevalence of sport-related injuries worldwide [1][2][3] . The most common injury site is the lower limb, and 23%-67% accounted for the knee 1,2) . Fatigue has been found to increase the risk of injury 4) . Fatigue is defined as decreased ability of the muscle to contract and exert a force that develops gradually soon after the onset of the sustained physical activity 5,6) . One of the consequences of fatigue is that it reduces the skill-related physical fitness component such as balance 7 ) and agility 8 ) and strength 4,7 ) which consequently impaired sports performance 9) . Dynamic balance has been well established as a vital component of fitness among athletes such as gymnasts, footballer, golfer, ice-hockey players, rifle shooter and taekwondo practitioners 10,11) . It has been shown that possessing good dynamic balance not only reduces the risk of injuries 12 ) but would increase sports performance 10 ) . Unfortunately, these advantages may be limited after fatigue 12) . Dynamic balance is defined as the ability to maintain the stability of the center of mass during movement 13 ) . Biomechanical deviations of the lower extremity occur during movement of the center of mass away from the base of support 14) . Balance is gained by maintaining equilibrium in a gravitational field and the ability to react quickly yet efficiently manners toward destabilizing forces to regain stability via postural adjustments...

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“…35). Surprisingly, significant reduction of the normalized reach distance mean were seen in the Group B (9.60%, p<0.001) and Group D (−1.36%, p<0.03).…”

Section: Resultsmentioning

confidence: 89%

“…This protocol consisted of vertical jumping, stepping up and down, squatting and L-Drill [33][34][35] . Prior to starting, participants' maximum vertical jump was recorded.…”

Section: Exposure To Fatiguementioning

confidence: 99%

Effects of Kinesio<sup>®</sup> Taping on Dynamic Balance Following Fatigue: a Randomized Controlled Trial

Zulfikri

Justine

2017

Phys Ther Res

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“…21 The average of the 3 maximal jumps was recorded as the participant's maximum vertical-jump height (cm). 18 …”

Section: Preexercisementioning

confidence: 99%

“…11,15 Previous researchers have used exercise protocols that have been short in duration, 11,[17][18][19] consisted only of open kinetic chain tasks, 16 or required participants to repeat a single task such as parallel squats. 14,20 Investigators evaluating longer durations of exercise have used treadmill running or sprinting 18,21 rather than the multidirectional tasks inherent to most sports.…”

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confidence: 99%

Lower Extremity Landing Biomechanics in Both Sexes After a Functional Exercise Protocol

Wesley

Aronson

Docherty

2015

Journal of Athletic Training

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Context: Sex differences in landing biomechanics play a role in increased rates of anterior cruciate ligament (ACL) injuries in female athletes. Exercising to various states of fatigue may negatively affect landing mechanics, resulting in a higher injury risk, but research is inconclusive regarding sex differences in response to fatigue.Objective: To use the Landing Error Scoring System (LESS), a valid clinical movement-analysis tool, to determine the effects of exercise on the landing biomechanics of males and females.Design: Cross-sectional study. Setting: University laboratory.Patients or Other Participants: Thirty-six (18 men, 18 women) healthy college-aged athletes (members of varsity, club, or intramural teams) with no history of ACL injury or prior participation in an ACL injury-prevention program.Intervention(s): Participants were videotaped performing 3 jump-landing trials before and after performance of a functional, sportlike exercise protocol consisting of repetitive sprinting, jumping, and cutting tasks.Main Outcome Measure(s): Landing technique was evaluated using the LESS. A higher LESS score indicates more errors. The mean of the 3 LESS scores in each condition (preexercise and postexercise) was used for statistical analysis.Results: Women scored higher on the LESS (6.3 6 1.9) than men (5.0 6 2.3) regardless of time (P ¼ .04). Postexercise scores (6.3 6 2.1) were higher than preexercise scores (5.0 6 2.1) for both sexes (P ¼ .01), but women were not affected to a greater degree than men (P ¼ .62).Conclusions: As evidenced by their higher LESS scores, females demonstrated more errors in landing technique than males, which may contribute to their increased rate of ACL injury. Both sexes displayed poor technique after the exercise protocol, which may indicate that participants experience a higher risk of ACL injury in the presence of fatigue. Women consistently demonstrated higher Landing Error Scoring System scores than men, committing more errors in landing technique both before and after exercise. The Landing Error Scoring System scores for both sexes increased after exercise, indicating that both males and females were more likely to demonstrate high-risk landing mechanics when fatigued. A relatively short period of intense exercise was sufficient to cause detrimental changes in landing mechanics.

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“…Specifically, place calibration markers on the greater trochanters, bilateral medial and lateral knee and medial and lateral malleoli. Place tracking markers on the posterior and anterior superior iliac crests, and place clusters on the thighs and shanks, and five markers on each foot [19][20] . 4.…”

Section: Subject Preparationmentioning

confidence: 99%

A Novel Application of Musculoskeletal Ultrasound Imaging

Eranki

Cortés

Ferencek

et al. 2013

JoVE

Self Cite

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Ultrasound is an attractive modality for imaging muscle and tendon motion during dynamic tasks and can provide a complementary methodological approach for biomechanical studies in a clinical or laboratory setting. Towards this goal, methods for quantification of muscle kinematics from ultrasound imagery are being developed based on image processing. The temporal resolution of these methods is typically not sufficient for highly dynamic tasks, such as drop-landing. We propose a new approach that utilizes a Doppler method for quantifying muscle kinematics. We have developed a novel vector tissue Doppler imaging (vTDI) technique that can be used to measure musculoskeletal contraction velocity, strain and strain rate with sub-millisecond temporal resolution during dynamic activities using ultrasound. The goal of this preliminary study was to investigate the repeatability and potential applicability of the vTDI technique in measuring musculoskeletal velocities during a drop-landing task, in healthy subjects. The vTDI measurements can be performed concurrently with other biomechanical techniques, such as 3D motion capture for joint kinematics and kinetics, electromyography for timing of muscle activation and force plates for ground reaction force. Integration of these complementary techniques could lead to a better understanding of dynamic muscle function and dysfunction underlying the pathogenesis and pathophysiology of musculoskeletal disorders.

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Two Different Fatigue Protocols and Lower Extremity Motion Patterns During a Stop-Jump Task

Cited by 57 publications

References 44 publications

Effects of Kinesio<sup>®</sup> Taping on Dynamic Balance Following Fatigue: a Randomized Controlled Trial

Effects of Kinesio<sup>®</sup> Taping on Dynamic Balance Following Fatigue: a Randomized Controlled Trial

Lower Extremity Landing Biomechanics in Both Sexes After a Functional Exercise Protocol

A Novel Application of Musculoskeletal Ultrasound Imaging

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