Acute Effects of Single- Versus Double-Leg Postactivation Potentiation on Postural Balance of Older Women: An Age-Matched Controlled Study

2020 ◽  
pp. 1-7
Author(s):  
Ilha G. Fernandes ◽  
Matheus A. Souza ◽  
Matheus L. Oliveira ◽  
Bianca Miarka ◽  
Michelle A. Barbosa ◽  
...  
Keyword(s):  
Older Women ◽  
Postural Balance ◽  
Path Length ◽  
Center Of Pressure ◽  
Controlled Study ◽  
Postactivation Potentiation ◽  
Acute Effects ◽  
Balance Test ◽  
The One ◽  
Single Versus

Aims: To compare the postactivation potentiation effects of isometric contraction until failure in double- and single-leg tasks on older women’s balance. Methods: The one-legged balance test was performed before and immediately after a rise-to-toes task until the task failure. Older women were divided into two groups: a group performed the task with double leg (n = 43) and the other group with single-leg support (n = 55). Results: The single-leg group showed slower velocity of sway post rise-to-toes task (pre = 4.02 ± 1; post = 3.78 ± 1.15 m/s; p = .04) without differences for the center of pressure path length (pre = 79 ± 21; post = 75 ± 23 cm; p = .08). In the double-leg group, faster velocity of sway (pre = 4 ± 1.22; post = 4.25 ± 1.13; p = .03) and increased center of pressure path length (pre = 80 ± 24; post = 85 ± 23 cm; p = .03) were observed after the task. Conclusions: The single-leg group showed improved balance outcomes due to postactivation potentiation, while the double-leg group showed worsened balance consistent with muscle fatigue.

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 The Effect of Balance and Sand Training on Postural Control in Elite Beach Volleyball Players

2020 ◽  
Vol 17 (23) ◽  
pp. 8981
Author(s):  
Sergio Sebastia-Amat ◽  
Luca Paolo Ardigò ◽  
Jose Manuel Jimenez-Olmedo ◽  
Basilio Pueo ◽  
Alfonso Penichet-Tomas
Keyword(s):  
Postural Control ◽  
Training Program ◽  
Path Length ◽  
Center Of Pressure ◽  
Dynamic Performance ◽  
Balance Training ◽  
Root Mean Square Amplitude ◽  
Balance Test ◽  
Positive Balance ◽  
Volleyball Players

The aim of this work was to evaluate the effectiveness of a 12-week-long balance training program on the postural control of elite male beach volleyball players and the effect on balance when swapping to specific sports training in the sand in the following 12 weeks. Six elite players were tested before and after the balance training program and also 12 weeks after the balance training had finished. To this aim, a pressure platform was used to collect the following center of pressure parameters: path length, speed, mean position, and root-mean-square amplitude in the medial-lateral and anteroposterior planes. Romberg quotients for the center of pressure parameters were also calculated. The results of the present study showed better static postural control after specific balance training: smaller path length and speed under open eyes condition in dominant (p = 0.015; p = 0.009, respectively) and non-dominant monopedal stances (p = 0.005; p = 0.004, respectively). Contrastingly, 12 weeks after the balance training program, the path length and speed values under open eyes condition in bipedal stance increased significantly (p = 0.045; p = 0.004, respectively) for sand training. According to our results, balance training is effective to achieve positive balance test scores. It is speculated, and yet to be proven, that sand training could be effective to improve dynamic and open eyes postural control during beach volleyball practice. In beach volleyball players, a balance training program is effective to develop static balance but the effect of ecological sand training on dynamic performance deserves specific investigation.

Postural balance in low back pain patients: Intra-session reliability of center of pressure on a portable force platform and of the one leg stand test

2011 ◽  
Vol 34 (2) ◽  
pp. 213-217 ◽  
Author(s):  
Thomas Maribo ◽  
Kristian Stengaard-Pedersen ◽  
Lone Donbæk Jensen ◽  
Niels Trolle Andersen ◽  
Berit Schiøttz-Christensen
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Postural Balance ◽  
Center Of Pressure ◽  
Force Platform ◽  
Low Back ◽  
Stand Test ◽  
The One ◽  
Pain Patients

scholarly journals Postural balance and 7-meter throw’s accuracy in handball

2017 ◽  
Vol 10 (19) ◽  
pp. 103-108
Author(s):  
Leon Gomboș ◽  
Alexandru Andrei Gherman ◽  
Adrian Pătrașcu ◽  
Paul Radu
Keyword(s):  
Future Study ◽  
Postural Balance ◽  
Center Of Pressure ◽  
Center Of Gravity ◽  
Force Platform ◽  
Balance Test ◽  
The Past ◽  
Accuracy Test ◽  
Positive Correlations ◽  
General Balance

Abstract This study aims to identify if there is a relation between postural balance and the accuracy of 7 meters throws in handball. There is an increase need to improve the success of the 7 meters throw, due to its impact regarding a win or loss over the past years during high-end competitions. Subjects: 173 subjects were involved in this study, 123 males and 50 females with the ages between 18 and 21 years old. Materials: We’ve conducted the balance test using the AMTI NETforce BP 400600 force platform and for the accuracy test we’ve conducted a shooting trial that quantified the spread of a series of throws from the 7 meters mark. We’ve observed the radial dislocation, area and length of the center of pressure for the balance test and for the shooting trial we’ve measured the distance of the throw from a preset spot. Results: There were no correlation between the important factors of balance like Dislocation, Area, Length, and throwing percentage for the Circle, Area 1, Area 2, Missed balls. Instead, between the 3 important factors of balance, there are strong and positive correlations, drawing the conclusion that when we have big numbers for center of gravity deviations, total trajectory (cm2) and the area values, the chances to score a goal from 7 meters are lower. Conclusions: The results of the study confirm the hypothesis. The objectives for a future study is to find ways/methods to improve the general balance, in order to increase the efficiency for the 7 meters throwing.

scholarly journals Smartphone Use and Postural Balance in Healthy Young Adults

2020 ◽  
Vol 17 (9) ◽  
pp. 3307 ◽  
Author(s):  
Roxana Ramona Onofrei ◽  
Elena Amaricai ◽  
Oana Suciu ◽  
Vlad Laurentiu David ◽  
Andreea Luciana Rata ◽  
...  
Keyword(s):  
Young Adults ◽  
Plantar Pressure ◽  
Postural Balance ◽  
Path Length ◽  
Center Of Pressure ◽  
Text Message ◽  
Metatarsal Head ◽  
Balance Performance ◽  
And Control ◽  
The Impact

Maintaining an upright posture while talking or texting on the phone is a frequent dual-task demand. Using a within-subjects design, the aim of the present study was to assess the impact of a smartphone conversation or message texting on standing plantar pressure and postural balance performance in healthy young adults. Thirty-five subjects (mean age 21.37 ± 1.11 years) were included in this study. Simultaneous foot plantar pressure and stabilometric analysis were performed using the PoData system, under three conditions: no phone (control), talking on a smartphone (talk) and texting and sending a text message via a smartphone (text). Stabilometric parameters (center of pressure (CoP) path length, 90% confidence area and maximum CoP speed) were significantly affected by the use of different smartphone functions (p < 0.0001). The CoP path length and maximum CoP speed were significantly higher under the talk and text conditions when compared to the control. CoP path length, 90% confidence area and maximum CoP speed were significantly increased in talk compared to text and control. Talking on the phone also influenced the weight distribution on the left foot first metatarsal head and heel as compared with message texting. Postural stability in healthy young adults was significantly affected by talking and texting on a smartphone. Talking on the phone proved to be more challenging.

scholarly journals COMPARISON OF STATIC POSTURAL BALANCE IN PATIENTS WITH SWEDDS AND PARKINSON’S DISEASE

2020 ◽  
Vol 20 (09) ◽  
pp. 2040013
Author(s):  
DO-YOUNG KWON ◽  
YOON-HYEOK CHOI ◽  
YU-RI KWON ◽  
GWANG-MOON EOM ◽  
JI-WON KIM
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Postural Balance ◽  
Peak Power ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Normal Subjects ◽  
Mean Velocity ◽  
Balance Test ◽  
Custom Made

Differentiating scans without evidence of dopaminergic deficits (SWEDDs) from Parkinson’s disease (PD) is very important to avoid costly and inappropriate interventions. The postural balance strategy patients with SWEDDs are not clear. This study investigates the difference in static postural balance between patients with SWEDDs and PD. Twenty-two patients (11 SWEDDs and 11 PD groups) and 11 control groups were instructed to quietly stand on a custom-made force platform. The outcome measures were, mean distance, 95% confidence ellipse area, mean velocity, mean frequency, peak frequency and peak power derived from the center of pressure (COP) data in overall, medio-lateral (ML) and anterio-posterior (AP) directions. As statistical analysis, ANOVA and post hoc tests were conducted for comparison of patients with SWEDDs and PD. SWEDDs patients presented a smaller postural sway size and a more frequent postural sway mainly in the ML direction ([Formula: see text]). On the contrary, there were no significant differences in mean velocity and peak power. Also, no significant differences existed between SWEDDs and normal subjects ([Formula: see text]). The results reflect that a few COP-based outcome variables might be useful to distinguish SWEDDs patients from PD patients. This study suggests that a static postural balance test can be used for clinical screening and identification of potential SWEDDs.

The Effect of Cryotherapy Application to the Knee Joint on Dynamic Postural Stability

2020 ◽  
Vol 29 (4) ◽  
pp. 454-462
Author(s):  
Karl Fullam ◽  
Brian Caulfield ◽  
Garrett F. Coughlan ◽  
Wayne McNulty ◽  
David Campbell ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Knee Joint ◽  
Ankle Joint ◽  
Postural Balance ◽  
Outcome Measure ◽  
Center Of Pressure ◽  
Joint Kinematics ◽  
Balance Test ◽  
Limb Injuries ◽  
Star Excursion Balance Test

Context: Decreased postural balance is a primary risk factor for lower-limb injuries. Cryotherapy is commonly utilized by clinicians to provide local analgesia for minor acute knee joint musculoskeletal injuries during breaks in play or at halftime. Its effect on dynamic postural balance remains unclear. Objective: To investigate the acute effects of a 15-minute knee joint cryotherapy application on dynamic postural balance, as assessed primarily via a clinically oriented outcome measure. Design: Experimental study. Setting: University biomechanics laboratory. Patients or Participants: A total of 28 elite-level college male field-sport athletes. Intervention: Participants were tested on the anterior, posteromedial, and posterolateral reach directions of the Star Excursion Balance Test both before and after a 15-minute knee joint cryotherapy application. Main Outcome Measure(s): Normalized reach distances, 3-dimensional knee joint kinematics, sagittal plane hip and ankle joint kinematics, as well as fractal dimension of the center-of-pressure path during the performance of the anterior, posteromedial, and posterolateral reach directions of the Star Excursion Balance Test. Results: There was a statistically significant decrease in reach distance scores achieved on anterior, posteromedial, and posterolateral directions of the Star Excursion Balance Test from precryotherapy to postcryotherapy (P < .05). None of the decreases in reach distance scores exceeded the reported smallest detectable difference values. No significant differences were observed in hip, knee, or ankle joint kinematics (P > .05). No significant change in fractal dimension was observed for any reach direction following cryotherapy application (P > .05). Conclusions: The results of the present study indicate that dynamic postural balance is unlikely to be adversely affected immediately following cryotherapy application to the knee joint.

scholarly journals A Perturbed Postural Balance Test Using an Instrumented Treadmill – Precision and Accuracy of Belt Movement and Test-Retest Reliability of Balance Measures

2021 ◽  
Vol 3 ◽  
Author(s):  
Kim J. Lesch ◽  
Jere Lavikainen ◽  
Vesa Hyrylä ◽  
Paavo Vartiainen ◽  
Mika Venojärvi ◽  
...  
Keyword(s):  
Postural Balance ◽  
Center Of Pressure ◽  
Balance Control ◽  
Learning Effects ◽  
Balance Test ◽  
Peak Displacement ◽  
Retest Reliability ◽  
Time To Peak ◽  
Precision And Accuracy ◽  
Test Retest Reliability

A perturbed postural balance test can be used to investigate balance control under mechanical disturbances. The test is typically performed using purpose-built movable force plates. As instrumented treadmills become increasingly common in biomechanics laboratories and in clinical settings, these devices could be potentially used to assess and train balance control. The purpose of the study was to investigate how an instrumented treadmill applies to perturbed postural balance test. This was investigated by assessing the precision and reliability of the treadmill belt movement and the test-retest reliability of perturbed postural balance test over 5 days. Postural balance variables were calculated from the center of pressure trajectory and included peak displacement, time to peak displacement, and recovery displacement. Additionally, the study investigated short-term learning effects over the 5 days. Eight healthy participants (aged 24–43 years) were assessed for 5 consecutive days with four different perturbation protocols. Center of pressure (COP) data were collected using the force plates of the treadmill while participant and belt movements were measured with an optical motion capture system. The results show that the treadmill can reliably deliver the intended perturbations with &lt;1% deviation in total displacement and with minimal variability between days and participants (typical errors 0.06–2.71%). However, the treadmill was not able to reach the programmed 4 m/s2 acceleration, reaching only about 75% of it. Test–retest reliability of the selected postural balance variables ranged from poor to good (ICC 0.156–0.752) with typical errors between 4.3 and 28.2%. Learning effects were detected based on linear or quadratic trends (p &lt; 0.05) in peak displacement of the slow forward and fast backward protocols and in time to peak displacement in slow and fast backward protocols. The participants altered the initial location of the COP relative to the foot depending on the direction of the perturbation. In conclusion, the precision and accuracy of belt movement were found to be excellent. Test-retest reliability of the balance test utilizing an instrumented treadmill ranged from poor to good which is, in line with previous investigations using purpose-built devices for perturbed postural balance assessment.

scholarly journals TEST–RETEST RELIABILITY OF STATIC POSTURAL BALANCE VARIABLES IN NATURAL AND FEET-TOGETHER STANCE CONDITIONS

2021 ◽  
pp. 2140033
Author(s):  
JUNGHYUK KO ◽  
DO-YOUNG KWON ◽  
SU-UNG CHAE ◽  
YU-RI KWON ◽  
GWANG-MOON EOM ◽  
...  
Keyword(s):  
Postural Balance ◽  
Center Of Pressure ◽  
Force Plate ◽  
Test Protocol ◽  
Mean Velocity ◽  
Balance Test ◽  
Retest Reliability ◽  
Balance Tests ◽  
The Mean ◽  
Test Retest Reliability

It is important to confirm the reliability of postural balance variables because the results of balance tests would be different with different balance test protocols, i.e., stance conditions such as natural and feet-together stances. The aim of this study was to investigate the test–retest reliability of postural balance variables during the natural and feet-together stance conditions. Sixteen young healthy adults were instructed to sustain their center of body mass as stably as possible on the force plate. As balance standing conditions, natural (a comfortable self-selected stance width) and feet-together stances (placing the feet [Formula: see text] apart) were selected. The mean distance, mean velocity, mean frequency, and 95% confidence ellipse area were derived from the center of pressure (COP) time series in the overall, anteroposterior (AP), and mediolateral (ML) directions. To evaluate the test–retest reliability of the postural balance variables, Cronbach’s alpha coefficient was calculated in each stance condition. Mean velocity was the most reliable variable particularly in three repeated balances within both the natural and feet together stances ([Formula: see text]–0.921). The reliability of all variables of the three balance test was greater than that of the two balance tests, mainly in the natural stance. In contrast, the mean ML distance of the feet-together stance had poor reliability despite three balance tests ([Formula: see text]). These results suggest that the balance test protocol should consider the appropriate stance conditions as well as the number of balance trials to select the reliable postural balance variables.

scholarly journals Minimal shoes improve stability and mobility in persons with a history of falls

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Tomasz Cudejko ◽  
James Gardiner ◽  
Asangaedem Akpan ◽  
Kristiaan D’Août
Keyword(s):  
Fall Prevention ◽  
Postural Stability ◽  
Center Of Pressure ◽  
Stability Margin ◽  
Timed Up And Go ◽  
Balance Test ◽  
Margin Of Stability ◽  
Eyes Open ◽  
History Of ◽  
Falls In Older Adults

AbstractPostural and walking instabilities contribute to falls in older adults. Given that shoes affect human locomotor stability and that visual, cognitive and somatosensory systems deteriorate during aging, we aimed to: (1) compare the effects of footwear type on stability and mobility in persons with a history of falls, and (2) determine whether the effect of footwear type on stability is altered by the absence of visual input or by an additional cognitive load. Thirty participants performed standing and walking trials in three footwear conditions, i.e. conventional shoes, minimal shoes, and barefoot. The outcomes were: (1) postural stability (movement of the center of pressure during eyes open/closed), (2) walking stability (Margin of Stability during normal/dual-task walking), (3) mobility (the Timed Up and Go test and the Star Excursion Balance test), and (4) perceptions of the shoes (Monitor Orthopaedic Shoes questionnaire). Participants were more stable during standing and walking in minimal shoes than in conventional shoes, independent of visual or walking condition. Minimal shoes were more beneficial for mobility than conventional shoes and barefoot. This study supports the need for longitudinal studies investigating whether minimal footwear is more beneficial for fall prevention in older people than conventional footwear.

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