R-Vine Copula Mutual Information for Intermuscular Coupling Analysis

Wu, Yating; She, Qingshan; Wang, Hongan; Ma, Yuliang; Sun, Mingxu; Shen, Tao

doi:10.1007/978-981-16-6554-7_58

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…This variable was also assessed in the aforementioned work on uterine muscle synchronizations [ 19 , 21 ], with higher values of MI as the delivery advanced. Furthermore, the authors of Wu et al [ 25 ] proposed a methodology based on MI to analyze intermuscular coupling during the movement of the upper limbs, obtaining higher values for the triceps brachii and posterior deltoid pair compared to static states. MI was also utilized to measure the inter-muscular coupling between the biceps and triceps with aging [ 26 ], with decreased values of MI obtained as aging progressed.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Muscle Coordination Changes Caused by the Use of an Occupational Passive Lumbar Exoskeleton in Laboratory Conditions

Iranzo,

Belda-Lois,

Martinez-de-Juan

et al. 2023

Sensors

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The introduction of exoskeletons in industry has focused on improving worker safety. Exoskeletons have the objective of decreasing the risk of injury or fatigue when performing physically demanding tasks. Exoskeletons’ effect on the muscles is one of the most common focuses of their assessment. The present study aimed to analyze the muscle interactions generated during load-handling tasks in laboratory conditions with and without a passive lumbar exoskeleton. The electromyographic data of the muscles involved in the task were recorded from twelve participants performing load-handling tasks. The correlation coefficient, coherence coefficient, mutual information, and multivariate sample entropy were calculated to determine if there were significant differences in muscle interactions between the two test conditions. The results showed that muscle coordination was affected by the use of the exoskeleton. In some cases, the exoskeleton prevented changes in muscle coordination throughout the execution of the task, suggesting a more stable strategy. Additionally, according to the directed Granger causality, a trend of increasing bottom-up activation was found throughout the task when the participant was not using the exoskeleton. Among the different variables analyzed for coordination, the most sensitive to changes was the multivariate sample entropy.

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Section: Introductionmentioning

confidence: 99%

Assessment of Muscle Coordination Changes Caused by the Use of an Occupational Passive Lumbar Exoskeleton in Laboratory Conditions

Iranzo,

Belda-Lois,

Martinez-de-Juan

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…This variable was also assessed in the above mentioned work of uterine muscles synchronizations [16,17] with higher results of MI with the delivery advancing. Furthermore, Wu et al [21] propose a methodology based on MI to analyze intermuscular coupling during the movement of upper limbs, getting higher values for the pair Triceps Brachii and Posterior Deltoid compared to statatic states. MI was also was utilized to measure the inter-muscular coupling between Biceps and Triceps with aging [22], obtaining decreased values of MI with aging.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Use of a Passive Lumbar Exoskeleton in Muscle under Laboratory Conditions

Iranzo,

Belda Lois,

Martinez-de-Juan

et al. 2023

Preprint

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The introduction of exoskeletons in the industry has focused on improving worker safety. Exoskeletons have the objective of decreasing the risk of injury or fatigue when performing physically demanding tasks. The exoskeleton’s effects on the muscles is one of the most common focus in the assessments. The present study aims to analyse the muscle interactions generated by using a passive lumbar exoskeleton during load-handling tasks in laboratory conditions with and without an exoskeleton. Electromyographic data of the muscles involved in the task were recorded from twelve participants performing load-handling tasks. Correlation Coefficient, Coherence Coefficient, Mutual Information, and Multivariate Sample Entropy were calculated to determine if there were significant differences in muscle interactions between the two test conditions. Results showed statistically significant differences for all pairs of muscles and indicated that the use of the exoskeleton implied more constant values throughout the exercise. The Directed Conditional Granger Causality was obtained to study the directionality of the interactions, with significant differences in two muscle pairs Gluteus-Quadriceps and Gluteus-Lumbar in the gravity-positive direction in both cases. In conclusion, EMG parameters chosen appear to be appropriate measurements for studying the exoskeleton effects over muscle couplings.

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R-Vine Copula Mutual Information for Intermuscular Coupling Analysis

Cited by 2 publications

References 10 publications

Assessment of Muscle Coordination Changes Caused by the Use of an Occupational Passive Lumbar Exoskeleton in Laboratory Conditions

Assessment of Muscle Coordination Changes Caused by the Use of an Occupational Passive Lumbar Exoskeleton in Laboratory Conditions

Effects of the Use of a Passive Lumbar Exoskeleton in Muscle under Laboratory Conditions

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