Analysis of various conditions in order to measure electromyography of isometric contractions in water and on air

Carvalho, Rodrigo Gustavo da Silva; Amorim, César Ferreira; Perácio, Luis Henrique Rossi; Coelho, Helder Figueiredo; Vieira, André Carleone; Menzel, Hans-Joachim; Szmuchrowski, Leszek Antoni

doi:10.1016/j.jelekin.2009.12.002

Cited by 22 publications

(20 citation statements)

References 38 publications

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“…Also Pöyhönen et al (1999) reported the similar present study. And Carvalho et al (2010) reported that EMG amplitude with extra protection tend to be lower than without extra protection, which is different from the present study. Consistent with the present study, Silvers et al (2001) reported no differences in measured muscle activities on land or in water.…”

Section: ⅳ Discussioncontrasting

confidence: 99%

“…Rainoldi et al (2004) suggested that lower muscle activity measurements were lower in water as electrodes were inadequately waterproofed and wires were improperly organized. Carvalho et al (2010) stated that proper waterproofing should result in no difference between muscle activity measurements on land and in water. Therefore, improved technologies for measuring muscle activities in water are needed.…”

Section: ⅳ Discussionmentioning

confidence: 99%

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Study on an Electrode Attachment Method Suitable for Underwater Electromyography Measurements

Han¹,

Park²,

Nam³

2015

Journal of the Korean Society of Physical Medicine

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Section: ⅳ Discussioncontrasting

confidence: 99%

Section: ⅳ Discussionmentioning

confidence: 99%

Study on an Electrode Attachment Method Suitable for Underwater Electromyography Measurements

Han¹,

Park²,

Nam³

2015

Journal of the Korean Society of Physical Medicine

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“…Nevertheless, insulation allows the sEMG signal obtained in water environment to be similar to the one on dry land. Therefore, some authors declare that it is possible to obtain a similar EMG signal between water and dry land environments when some factors are controlled, such as the type of protocol, adjusted use of electrode insulation, and similar skin temperature between both environments with control over water temperature, which reXects muscle temperature (Alberton et al 2008;Carvalho et al 2010;Rainoldi et al 2004a;Veneziano et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Electromyographic signal and force comparisons during maximal voluntary isometric contraction in water and on dry land

et al. 2010

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This study was designed to compare surface electromyographic (sEMG) signal and force production during maximal voluntary isometric contractions (MVCs) in water and on dry land. The reproducibility of sEMG and isometric force measurements between water and dry land environments was also assessed. Nine women performed MVC for elbow flexion and extension, hip flexion, and extension against identical fixed resistance in both environments. The sEMG signal from biceps brachii, triceps brachii, rectus femoris, and biceps femoris was recorded with waterproof adhesives placed over each electrode. The sEMG and force production showed no significant difference between water and dry land, except for HEX (p = 0.035). In addition, intraclass correlation coefficient values were significant and ranged from moderate to high (0.66-0.96) for sEMG and force production between environments. These results showed that the environment did not influence the sEMG and force in MVC.

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“…Previous studies show that waterproofing techniques do not influence EMG amplitude during land exercises [24]. In this study, the timing of foot contact was synchronized with the EMG system using a customized waterproof foot switch.…”

Section: Methodsmentioning

confidence: 97%

Changes in Quadriceps and Hamstring Co-Contraction Following Landing in Microgravity Condition: Comparing Females with Different Activity Levels

Sadeghi

Fatemeh

Takamjani

et al. 2015

PTJ

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Purpose: This study aimed to examine the differences in the co-activation of the rectus femoris (RF) and biceps femoris (BF) using the co-contraction index (CI) in aquatic and land environments during a drop-landing task in active and non-active females. Methods:In this casual-comparison study, 10 active and 10 non-active females volunteered to participate. The CI was calculated from recorded surface electromyographic (SEMG) activity of the RF and BF. To calculate CI, the amount of overlap between the linear envelopes of the agonist and antagonist muscles was found and divided by the number of data points. MathLab software (version 10) was used to process row data. Also, 2-way analysis of variance (ANOVA) assessed differences between groups and environments.Results: Results indicated that the CI was not affected by activity level in pre-and post-contact (P>0.05) while it was significantly higher (P<0.05) in land environment compared to the aquatic environment. Conclusion:Our findings show the differences in co-contraction of knee muscles between different environments. Our measure of co-contraction was lower in water compared to land, with no difference between the active and non-active groups. This may indicate that regardless of activity level, an aquatic environment may be an appropriate choice as an early phase in rehabilitation process.

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Analysis of various conditions in order to measure electromyography of isometric contractions in water and on air

Cited by 22 publications

References 38 publications

Study on an Electrode Attachment Method Suitable for Underwater Electromyography Measurements

Study on an Electrode Attachment Method Suitable for Underwater Electromyography Measurements

Electromyographic signal and force comparisons during maximal voluntary isometric contraction in water and on dry land

Changes in Quadriceps and Hamstring Co-Contraction Following Landing in Microgravity Condition: Comparing Females with Different Activity Levels

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