Reaching-lifting-placing task during standing after stroke: Coordination among ground forces, ankle muscle activity, and hand movement

2001 ◽  
Vol 82 (5) ◽  
pp. 650-660 ◽  
Author(s):  
Ann Kusoffsky ◽  
Ingmarie Apel ◽  
Helga Hirschfeld
Keyword(s):  
Muscle Activity ◽  
Hand Movement ◽  
Ankle Muscle

scholarly journals Ankle Muscle Activations during Different Foot-Strike Patterns in Running

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3422
Author(s):  
Jian-Zhi Lin ◽  
Wen-Yu Chiu ◽  
Wei-Hsun Tai ◽  
Yu-Xiang Hong ◽  
Chung-Yu Chen
Keyword(s):  
Muscle Activity ◽  
Muscle Activation ◽  
Stance Phase ◽  
Inertial Sensors ◽  
Plantar Flexion ◽  
Intraclass Correlation ◽  
Biceps Femoris ◽  
Ankle Muscle ◽  
Foot Strike ◽  
Muscle Activations

This study analysed the landing performance and muscle activity of athletes in forefoot strike (FFS) and rearfoot strike (RFS) patterns. Ten male college participants were asked to perform two foot strikes patterns, each at a running speed of 6 km/h. Three inertial sensors and five EMG sensors as well as one 24 G accelerometer were synchronised to acquire joint kinematics parameters as well as muscle activation, respectively. In both the FFS and RFS patterns, according to the intraclass correlation coefficient, excellent reliability was found for landing performance and muscle activation. Paired t tests indicated significantly higher ankle plantar flexion in the FFS pattern. Moreover, biceps femoris (BF) and gastrocnemius medialis (GM) activation increased in the pre-stance phase of the FFS compared with that of RFS. The FFS pattern had significantly decreased tibialis anterior (TA) muscle activity compared with the RFS pattern during the pre-stance phase. The results demonstrated that the ankle strategy focused on controlling the foot strike pattern. The influence of the FFS pattern on muscle activity likely indicates that an athlete can increase both BF and GM muscles activity. Altered landing strategy in cases of FFS pattern may contribute both to the running efficiency and muscle activation of the lower extremity. Therefore, neuromuscular training and education are required to enable activation in dynamic running tasks.

scholarly journals The effect of hyper-pronated foot on postural control and ankle muscle activity during running and cutting movement

2020 ◽  
Vol 14 (4) ◽  
pp. 216-220
Author(s):  
Zahed Mantashloo ◽  
Heydar Sadeghi ◽  
Mehdi Khaleghi Tazji ◽  
Vanessa Rice ◽  
Elizabeth J Bradshaw
Keyword(s):  
Postural Control ◽  
Muscle Activity ◽  
Muscle Activation ◽  
Cross Sectional Study ◽  
The Body ◽  
Lateral Direction ◽  
Cross Sectional ◽  
Activation Patterns ◽  
Muscle Activation Patterns ◽  
Ankle Muscle

Objective: The aim of this study was to examine the effect of hyper pronated foot on postural control and ankle muscle activity during running and cutting movement (v-cut). Methods: In this Cross-Sectional study, 42 young physically active (exercising three times per week regularly) males participated in this study, including 21 with hyper-pronated feet and 21 with normal feet. Each participant completed a running and cutting task. Body postural control was measured using a force platform (1000Hz) which was synchronized with surface electromyography of selected ankle muscles. MATLAB software was used to process and analyze the data. One-away ANOVA was used to identify any differences between groups. Results: Differing muscle activation patterns in the surrounding ankle musculature (tibialis anterior, peroneus longus) through to reduced postural stability in the medial-lateral direction and increased vertical ground reaction forces were observed between groups. Conclusion: According to the obtained results it seems that subtalar hyper-pronation can be regarded as a factor affecting the biomechanics of cutting by changing activation patterns of the muscles surrounding the ankle, and reducing postural control of the body in medial-lateral direction, but not in anterior-posterior direction.

scholarly journals Effects on Ankle Muscle Activity of the Tilt Direction of a Balance Board

2018 ◽  
Vol 33 (3) ◽  
pp. 395-400
Author(s):  
Miho MORITA ◽  
Yukio URABE ◽  
Takuya TAKEUCHI ◽  
Noriaki MAEDA
Keyword(s):  
Muscle Activity ◽  
Ankle Muscle ◽  
Balance Board

scholarly journals Variability of Muscular Recruitment in Hemiplegic Walking Assessed by EMG Analysis

Electronics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1572
Author(s):  
Francesco Di Nardo ◽  
Susanna Spinsante ◽  
Chiara Pagliuca ◽  
Angelica Poli ◽  
Annachiara Strazza ◽  
...  
Keyword(s):  
Motor Development ◽  
Muscle Activity ◽  
Computational Procedure ◽  
Target Population ◽  
Type I ◽  
Subject Variability ◽  
Group 15 ◽  
Ankle Muscle ◽  
Gastrocnemius Lateralis ◽  
Adaptive Variability

Adaptive variability during walking is typical of child motor development. It has been reported that neurological disorders could affect this physiological phenomenon. The present work is designed to assess the adaptive variability of muscular recruitment during hemiplegic walking and to detect possible changes compared to control populations. In the attempt of limiting the complexity of computational procedure, the easy-to-measure coefficient of variation (CV) index is adopted to assess surface electromyography (sEMG) variability. The target population includes 34 Winters’ type I and II hemiplegic children (H-group). Two further healthy populations, 34 age-matched children (C-group) and 34 young adults (A-group), are involved as controls. Results show a significant decrease (p < 0.05) of mean CV for gastrocnemius lateralis (GL) in H-group compared to both C-group (15% reduction) and A-group (35% reduction). Reductions of mean CV are detected also for tibialis anterior (TA) in H-group compared to C-group (7% reduction, p > 0.05) and A-group (15% reduction, p < 0.05). Lower CVs indicate a decreased intra-subject variability of ankle-muscle activity compared to controls. Novel contribution of the study is twofold: (1) To propose a CV-based approach for an easy-to-compute assessment of sEMG variability in hemiplegic children, useful in different experimental environments and different clinical purposes; (2) to provide a quantitative assessment of the reduction of intra-subject variability of ankle-muscle activity in mild-hemiplegic children compared to controls (children and adults), suggesting that hemiplegic children present a limited capability of adapting their muscle recruitment to the different stimuli met during walking task. This finding could be very useful in deepening the knowledge of this neurological disorder.

Ankle muscle activity modulation during single-leg stance differs between children, young adults and seniors

2017 ◽  
Vol 118 (2) ◽  
pp. 239-247 ◽  
Author(s):  
Eduard Kurz ◽  
Oliver Faude ◽  
Ralf Roth ◽  
Lukas Zahner ◽  
Lars Donath
Keyword(s):  
Young Adults ◽  
Muscle Activity ◽  
Single Leg Stance ◽  
Ankle Muscle

Effects of Treadmill Incline and Speed on Ankle Muscle Activity in Subjects After a Stroke

2016 ◽  
Vol 97 (3) ◽  
pp. 445-453 ◽  
Author(s):  
Roghayeh Mohammadi ◽  
Saeed Talebian ◽  
Chetan P. Phadke ◽  
Mir Saeed Yekaninejad ◽  
Mohammad-Reza Hadian
Keyword(s):  
Muscle Activity ◽  
Ankle Muscle

Effect of a Forefoot Off-loading Postoperative Shoe on Muscle Activity, Posture, and Static Balance

2013 ◽  
Vol 103 (1) ◽  
pp. 36-42 ◽  
Author(s):  
Joanne S. Paton ◽  
Katherine Thomason ◽  
Karl Trimble ◽  
James E. Metcalfe ◽  
Jonathan Marsden
Keyword(s):  
Muscle Activity ◽  
Tibialis Anterior ◽  
Peak Pressure ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Ankle Instability ◽  
Tibialis Anterior Muscle ◽  
Contralateral Side ◽  
Support Surface ◽  
Ankle Muscle

Background: We investigated whether a forefoot off-loading postoperative shoe (FOPS) alters standing posture, ankle muscle activity, and static postural sway and whether any effects are altered by wearing a shoe raise on the contralateral side. Methods: Posture, ankle muscle activity, and postural sway were compared in 14 healthy participants wearing either a FOPS or a control shoe with or without a contralateral shoe raise. Participants were tested under different sensory and support surface conditions. Additionally, reductions in peak pressure under the forefoot while walking were assessed with and without a contralateral shoe raise to determine whether the FOPS continued to achieve its primary off-loading function. Results: Compared with the control condition, wearing a FOPS moved the center of pressure posteriorly, increased tibialis anterior muscle activity, and reduced ankle plantarflexor activity. These changes decreased when a contralateral shoe raise was added. No difference in postural sway was found between footwear conditions. Forefoot peak pressure was always reduced when wearing the FOPS. Conclusions: The posterior shift in center of pressure toward and behind the ankle joint axis is believed to result in the increase in tibialis anterior muscle activity that now acts as the primary stabilizer around the ankle. Instability may, therefore, increase in patients with weak tibialis anterior muscles (eg, diabetic neuropathy) who need to wear offloading devices for ulcer management. We suggest that the addition of a contralateral shoe raise fitted with a FOPS may potentially be beneficial in maintaining stability while off-loading the forefoot in this patient group. (J Am Podiatr Med Assoc 103(1): 36–42, 2013)

CHARACTERISTICS OF ANKLE MUSCLE ACTIVITY DURING TILTING MOVEMENTS ON A WOBBLE BOARD

2017 ◽  
Vol 51 (4) ◽  
pp. 364.1-364
Author(s):  
Miho Morita ◽  
Yukio Urabe ◽  
Eri Fujii ◽  
Nobuaki Moriyama ◽  
Takahiko Yamamoto ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Ankle Muscle
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