scholarly journals Preseason to Postseason Changes on the BTrackS Force Plate in a Sample of College Athletes

2020 ◽  
Vol 29 (1) ◽  
pp. 134-136
Author(s):  
Ryan Morrison ◽  
Kyle M. Petit ◽  
Chris Kuenze ◽  
Ryan N. Moran ◽  
Tracey Covassin
Keyword(s):  
Athletic Training ◽  
Path Length ◽  
College Athletes ◽  
Center Of Pressure ◽  
Low Cost ◽  
Force Plate ◽  
Minimal Detectable Change ◽  
Detectable Change ◽  
Competitive Season ◽  
Significant Difference

Context: Balance testing is a vital component in the evaluation and management of sport-related concussion. Few studies have examined the use of objective, low-cost, force-plate balance systems and changes in balance after a competitive season. Objective: To examine the extent of preseason versus postseason static balance changes using the Balance Tracking System (BTrackS) force plate in college athletes. Design: Pretest, posttest design. Setting: Athletic training facility. Participants: A total of 47 healthy, Division-I student-athletes (33 males and 14 females; age 18.4 [0.5] y, height 71.8 [10.8] cm, weight 85.6 [21.7] kg) participated in this study. Main Outcome Measures: Total center of pressure path length was measured preseason and postseason using the BTrackS force plate. A Wilcoxon signed-rank test was conducted to examine preseason and postseason changes. SEM and minimal detectable change were also calculated. Results: There was a significant difference in center of pressure path length differed between preseason (24.6 [6.8] cm) and postseason (22.7 [5.4] cm) intervals (P = .03), with an SEM of 3.8 cm and minimal detectable change of 10.5 cm. Conclusions: Significant improvements occurred for center of pressure path length after a competitive season, when assessed using the BTrackS in a sample of college athletes. Further research is warranted to determine the effectiveness of the BTrackS as a reliable, low-cost alternative to force-plate balance systems. In addition, clinicians may need to update baseline balance assessments more frequently to account for improvements.

scholarly journals Static Balance in Patients with Vestibular Impairments: A Preliminary Study

Scientifica ◽  
2016 ◽  
Vol 2016 ◽  
pp. 1-4 ◽  
Author(s):  
Hossein Talebi ◽  
Mohammad Taghi Karimi ◽  
Seyed Hamid Reza Abtahi ◽  
Niloofar Fereshtenejad
Keyword(s):  
Path Length ◽  
Center Of Pressure ◽  
Balance Control ◽  
Force Plate ◽  
Static Balance ◽  
Eyes Closed ◽  
Significant Difference ◽  
Eyes Open ◽  
Age Limits ◽  
The Difference

Aims. Vestibular system is indicated as one of the most important sensors responsible for static and dynamic postural control. In this study, we evaluated static balance in patients with unilateral vestibular impairments.Materials and Methods. We compared static balance control using Kistler force plate platform between 10 patients with unilateral vestibular impairments and 20 normal counterparts in the same sex ratio and age limits (50±7). We evaluated excursion and velocity of center of pressure (COP) and path length in anteroposterior (AP) and mediolateral (ML) planes with eyes open and with eyes closed.Results. There was no significant difference between COP excursions in ML and AP planes between both groups with eyes open and eyes closed (pvalue > 0.05). In contrast, the difference between velocity and path length of COP in the mentioned planes was significant between both groups with eyes open and eyes closed (pvalue < 0.05).Conclusions. The present study showed the static instability and balance of patients with vestibular impairments indicated by the abnormal characteristics of body balance.

Cardiorespiratory Responses During Underwater and Land Treadmill Exercise in College Athletes

2011 ◽  
Vol 20 (3) ◽  
pp. 345-354 ◽  
Author(s):  
Peter Brubaker ◽  
Cemal Ozemek ◽  
Alimer Gonzalez ◽  
Stephen Wiley ◽  
Gregory Collins
Keyword(s):  
Athletic Training ◽  
Outcome Measures ◽  
Sports Medicine ◽  
Perceived Exertion ◽  
College Athletes ◽  
Random Order ◽  
Original Research ◽  
Cardiorespiratory Responses ◽  
Significant Difference ◽  
The Relationship

Context:Underwater treadmill (UTM) exercise is being used with increased frequency for rehabilitation of injured athletes, yet there has been little research conducted on this modality.Objective:To determine the cardiorespiratory responses of UTM vs land treadmill (LTM) exercise, particularly with respect to the relationship between heart rate (HR) and oxygen consumption (VO2).Design and Setting:This quantitative original research took place in sports medicine and athletic training facilities at Wake Forest University.Participants:11 Wake Forest University student athletes (20.8 ± 0.6 y, 6 women and 5 men).Intervention:All participants completed the UTM and LTM exercise-testing protocols in random order. After 5 min of standing rest, both UTM and LTM protocols had 4 stages of increasing belt speed (2.3, 4.9, 7.3, and 9.6 km/h) followed by 3 exercise stages at 9.6 km/h with increasing water-jet resistance (30%, 40%, and 50% of jet capacity) or inclines (1%, 2%, and 4% grade).Main Outcome Measures:A Cosmed K4b2 device with Polar monitor was used to collect HR, ventilation (Ve), tidal volume (TV), breathing frequency (Bf), and VO2 every minute. Ratings of perceived exertion (RPE) were also obtained each minute.Results:There was no significant difference between UTM and LTM for VO2 at rest or during any stage of exercise except stage 3. Furthermore, there were no significant differences between UTM and LTM for HR, Ve, Bf, and RPE on any exercise stage. Linear regression of HR vs VO2, across all stages of exercise, indicates a similar relationship in these variables during UTM (r = .94, y = .269x − 10.86) and LTM (r = .95, y = .291x − 12.98).Conclusions:These data indicate that UTM and LTM exercise elicits similar cardiorespiratory responses and that HR can be used to guide appropriate exercise intensity for college athletes during UTM.

scholarly journals The Effect of Sound and Vibration on Postural Balance in Healthy Young Adults

2018 ◽  
Vol 16 (12) ◽  
pp. 975-983
Author(s):  
Sunee BOVONSUNTHONCHAI ◽  
Pichaya HENGSOMBOON ◽  
Sitapa TANGLUANG ◽  
Pran ANUSRI ◽  
Pavitta CHOTIKUL ◽  
...  
Keyword(s):  
Young Adults ◽  
Interaction Effect ◽  
Postural Balance ◽  
Center Of Pressure ◽  
Force Plate ◽  
Repeated Measure ◽  
Significant Difference ◽  
Main Effect ◽  
Young Subjects ◽  
The One

Postural balance is influenced by alteration of somatosensory inputs. Sound and vibratory senses, one of several human senses may assist the postural control in a specific impaired situation. The aim of this pilot study was to quantify the effect of sound and vibration on postural balance in healthy young adults. Ten healthy young subjects volunteered to participate in the study. The average age, weight, height, and body mass index were 21.88 ± 0.42 years, 56.21 ± 9.80 kg, 159.75 ± 5.20 cm, and 21.99 ± 3.52 kg/m2. They were assessed for standing postural balance on a force plate over 6 conditions of sound and vibration applications under vision was excluded by using a blindfold. Postural balance variables consisted of planar deviation of Center of Pressure (CoP) and the maximum ranges of CoP in the medio-lateral (ML) and antero-posterior (AP) directions. Two-way ANOVA was used to find the effect and interaction effect of sound and vibration on the postural balance variables. Further analyses of the variables were performed on a basis of each factor. Between sound conditions (no sound and open sound), the variables were analyzed by the paired t-test. In addition, the effect of vibration (no vibration, vibration on quadriceps, and vibration on gastrocnemius) on the variables were analyzed by the one-way repeated measure ANOVA. Results demonstrated no interaction effect and main effect of sound and vibration on the postural balance variables (p > 0.05). In addtion, no significant difference of the postural balance variables between sound conditions (p > 0.05) as well as among vibration conditions (p > 0.05). In conclusion, sound and vibration did not effect to the postural balance during standing in healty young adults.

scholarly journals Applying the Minimal Detectable Change of a Static and Dynamic Balance Test Using a Portable Stabilometric Platform to Individually Assess Patients with Balance Disorders

Healthcare ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 402 ◽  
Author(s):  
Juan De la Torre ◽  
Javier Marin ◽  
Marco Polo ◽  
José J. Marín
Keyword(s):  
Center Of Pressure ◽  
Balance Control ◽  
Dynamic Balance ◽  
Static Balance ◽  
Minimal Detectable Change ◽  
Detectable Change ◽  
Balance Test ◽  
Balance Disorders ◽  
Eyes Closed ◽  
Specialist Physician

Balance disorders have a high prevalence among elderly people in developed countries, and falls resulting from balance disorders involve high healthcare costs. Therefore, tools and indicators are necessary to assess the response to treatments. Therefore, the aim of this study is to detect relevant changes through minimal detectable change (MDC) values in patients with balance disorders, specifically with vertigo. A test-retest of a static and dynamic balance test was conducted on 34 healthy young volunteer subjects using a portable stabilometric platform. Afterwards, in order to show the MDC applicability, eight patients diagnosed with balance disorders characterized by vertigo of vestibular origin performed the balance test before and after a treatment, contrasting the results with the assessment by a specialist physician. The balance test consisted of four tasks from the Romberg test for static balance control, assessing dynamic postural balance through the limits of stability (LOS). The results obtained in the test-retest show the reproducibility of the system as being similar to or better than those found in the literature. Regarding the static balance variables with the lowest MDC value, we highlight the average velocity of the center of pressure (COP) in all tasks and the root mean square (RMS), the area, and the mediolateral displacement in soft surface, with eyes closed. In LOS, all COP limits and the average speed of the COP and RMS were highlighted. Of the eight patients assessed, an agreement between the specialist physician and the balance test results exists in six of them, and for two of the patients, the specialist physician reported no progression, whereas the balance test showed worsening. Patients showed changes that exceeded the MDC values, and these changes were correlated with the results reported by the specialist physician. We conclude that (at least for these eight patients) certain variables were sufficiently sensitive to detect changes linked to balance progression. This is intended to improve decision making and individualized patient monitoring.

Influence of Foot Type and Orthotics on Static and Dynamic Postural Control

2004 ◽  
Vol 13 (1) ◽  
pp. 54-66 ◽  
Author(s):  
Lauren C. Olmsted ◽  
Jay Hertel
Keyword(s):  
Postural Control ◽  
Athletic Training ◽  
Outcome Measures ◽  
Repeated Measures ◽  
Center Of Pressure ◽  
Group Interaction ◽  
Force Plate ◽  
Balance Test ◽  
Repeated Measures Design ◽  
Plate Dynamic

Context:The effects of custom-molded foot orthotics on neuromuscular processes are not clearly understood.Objective:To examine these effects on postural control in subjects with different foot types.Design:Between-groups, repeated-measures design.Setting:Athletic training laboratory.Subjects:30 healthy subjects assigned to groups by foot type: planus (n = 11), rectus (n = 12), or cavus (n = 7).Interventions:Custom-fit semirigid orthotics.Main Outcome Measures:Static postural control was measured on a force plate. Dynamic postural control was measured using the Star Excursion Balance Test. Both measurements were assessed with and without orthotics at baseline and 2 weeks later.Results:For static postural control, a significant condition-by-group interaction was found. Subjects with cavus feet had a decreased center-of-pressure velocity while wearing orthotics. For dynamic postural control, a significant condition-by-direction-by-group interaction was found. Subjects with cavus feet had increased reach distances in 3 of 8 directions while wearing orthotics.Conclusions:Custom orthotics were associated with some improvements in static and dynamic postural control in subjects with cavus feet.

scholarly journals Center of pressure-based postural sway differences on parallel and single leg stance in Olympic deaf basketball and volleyball players

2021 ◽  
Vol 17 (6) ◽  
pp. 418-427
Author(s):  
Yücel Makaracı ◽  
Recep Soslu ◽  
Ömer Özer ◽  
Abdullah Uysal
Keyword(s):  
Postural Control ◽  
Postural Stability ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Force Plate ◽  
Basketball Players ◽  
Male Athletes ◽  
Significant Difference ◽  
Single Leg Stance ◽  
Volleyball Players

In sports such as basketball and volleyball, loss of balance due to the inability to maintain body stability and lack of postural control adversely affect athletic performance. Deaf athletes appear to struggle with balance and postural stability problems. The purpose of this study was to examine postural sway values in parallel and single leg stance of Olympic deaf basketball and volleyball players and reveal differences between the branches. Twenty-three male athletes from the Turkish national deaf basketball (n= 11) and volleyball (n= 12) teams participated in the study. After anthropometric measurements, the subjects completed postural sway (PS) tests in parallel/single leg stances with open eyes and closed eyes on a force plate. PS parameters (sway path, velocity, and area) obtained from the device software were used for the statistical analysis. The Mann-Whitney U-test was used to compare differences in PS parameters between basketball and volleyball players, and the alpha value was accepted as 0.05. Volleyball players had significantly better results in parallel stance and dominant leg PS values than basketball players (P<0.05). There was no significant difference between the groups in nondominant leg PS values (P>0.05). We think that proprioceptive and vestibular system enhancing training practices to be performed with stability exercises will be beneficial in terms of both promoting functional stability and interlimb coordination. Trainers and strength coaches should be aware of differences in the postural control mechanism of deaf athletes.

scholarly journals Assessment of Visual Reliance in Balance Control: An Inexpensive Extension of the Static Posturography

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Jozef Púčik ◽  
Marián Šaling ◽  
Tomáš Lukáč ◽  
Oldřich Ondráček ◽  
Martin Kucharík
Keyword(s):  
Center Of Pressure ◽  
Balance Control ◽  
Low Cost ◽  
Force Plate ◽  
Sensory Information ◽  
Health Concern ◽  
Elderly Subjects ◽  
Upright Stance ◽  
Discrimination Power ◽  
Age Related

Ability of humans to maintain balance in an upright stance and during movement activities is one of the most natural skills affecting everyday life. This ability progressively deteriorates with increasing age, and balance impairment, often aggravated by age-related diseases, can result in falls that adversely impact the quality of life. Falls represent serious problems of health concern associated with aging. Many investigators, involved in different science disciplines such as medicine, engineering, psychology, and sport, have been attracted by a research of the human upright stance. In a clinical practice, stabilometry based on the force plate is the most widely available procedure used to evaluate the balance. In this paper, we have proposed a low-cost extension of the conventional stabilometry by the multimedia technology that allows identifying potentially disturbing effects of visual sensory information. Due to the proposed extension, a stabilometric assessment in terms of line integral of center of pressure (COP) during moving scene stimuli shows higher discrimination power between young healthy and elderly subjects with supposed stronger visual reliance.

scholarly journals Comparison of Postural Sway, Plantar Cutaneous Sensation According to Saccadic Eye Movement Frequency in Young Adults

2020 ◽  
Vol 17 (19) ◽  
pp. 7067
Author(s):  
Youngsook Bae
Keyword(s):  
Young Adults ◽  
Eye Movement ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Force Plate ◽  
Saccadic Eye Movement ◽  
Cutaneous Sensation ◽  
Plantar Surface ◽  
Significant Difference ◽  
Movement Frequency

The crossover trial study aimed to identify the saccadic eye movement (SEM) frequency to improve postural sway (PS) and plantar cutaneous sensation (PUS) in young adults. The 17 participants randomly performed 0.5-, 2-, and 3-Hz SEM. The SEM frequency was determined to allow the target to appear once per 2 s (0.5 Hz), twice per second (2 Hz), or thrice per second (3 Hz). SEM performance time was 3 min with a washout period of 5 min. PS and PUS were measured at baseline and during 0.5-Hz, 2-Hz, and 3-Hz SEMs using a Zebris FDM 1.5 force plate. PS was determined by measuring the sway area, path length, and speed of center of pressure (COP) displacement, and PUS was determined via the plantar surface area (PSA). In PS parameters, there was a significant difference among the SEM frequencies in the COPsway area PSAleft foot and PSAright foot. Compared to that at baseline, COPsway area decreased at 0.5 Hz and 2 Hz, while PSAleft foot and PSAright foot increased at 2 Hz. These results suggest that 2 Hz SEM may improve PS and PSA.

Measurement of Ankle Dorsiflexion: A Comparison of Active and Passive Techniques in Multiple Positions

2011 ◽  
Vol 20 (3) ◽  
pp. 333-344 ◽  
Author(s):  
David A. Krause ◽  
Beth A. Cloud ◽  
Lindsey A. Forster ◽  
Jennifer A. Schrank ◽  
John H. Hollman
Keyword(s):  
Outcome Measures ◽  
Repeated Measures ◽  
Interrater Reliability ◽  
Emg Activity ◽  
Minimal Detectable Change ◽  
Detectable Change ◽  
Intrarater Reliability ◽  
Significant Difference ◽  
Anterior Tibialis ◽  
Passive Techniques

Context:Limited ankle DF (DF) range of motion (ROM) resulting from restricted gastrocnemius and soleus mobility is associated with a variety of lower extremity pathologies. Several techniques are used clinically to measure ankle DF.Objectives:To evaluate the reliability and minimal detectable change of DF ROM measurement, determine whether there is a difference in measured DF between techniques, and quantify the electromyographic (EMG) activity of the soleus and tibialis anterior muscles associated with the techniques.Design:Repeated measures.Setting:Controlled laboratory setting.Participants:39 healthy subjects, age 22–33.Main Outcome Measures:DF measurements using 5 different techniques including active and passive DF with the knee extended and flexed to 90° and a modified lunge. EMG activity of the soleus and anterior tibialis muscles.Results:Intrarater reliability values (ICC3,1) ranged from .68 to .89. Interrater reliability (ICC2,1) ranged from .55 to .82. ICCs were the greatest with the modified lunge. The minimal detectable change (MDC95) ranged from 6° to 8° among the different techniques. A significant difference in DF ROM was found between all methods. Measurements taken with active DF were greater than the same measures taken passively. The lunge position resulted in greater DF ROM than both active and passive techniques. EMG activity of the soleus was greater with active DF and the lunge than with passive DF.Conclusions:The modified lunge, which demonstrated excellent intrarater and interrater reliability, may best represent maximal DF. Active end-range DF was significantly greater than passive end-range DF when measured at either 0° or 90° knee flexion. Greater active DF was not explained by inhibition of the soleus. Finally, using the modified lunge, a difference between 2 measurements over time of 6° or more suggests that a meaningful change has occurred.

Upward gaze direction increases center of pressure displacement and decreases squat stability

2021 ◽  
pp. 174795412110165
Author(s):  
Michael A Kohn ◽  
Melissa C Smith ◽  
Daniel J Goble
Keyword(s):  
Center Of Pressure ◽  
Low Cost ◽  
Statistical Significance ◽  
Force Plate ◽  
Gaze Direction ◽  
Back Squat ◽  
Practical Standpoint ◽  
Female Subjects

The purpose of this study was to quantify differences in barbell back squat stability as a function of gaze direction. Sixteen female subjects who were experienced in barbell back squatting performed six sets of three squat repetitions, randomized according to three gaze directions (DOWN, STRAIGHT, and UP). Stability was determined based on the displacement of center of pressure (COP) during each squat repetition, measured using a low-cost, portable force plate. Multiple t-tests with statistical significance set at p < 0.05 were conducted between gaze directions and revealed significant differences in stability between the DOWN versus UP conditions. Specifically, DOWN had the smallest COP displacement, with significantly larger COP displacement in the UP condition (p = 0.02). There were no significant differences when DOWN or UP was compared to STRAIGHT (p = 0.22 and p = 0.28 respectively). From a practical standpoint, these results suggest that having a downward gaze direction during barbell back squat will maximize stability and reduce the likelihood of injury.

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