Wavelet coherence as a measure of trunk stabilizer muscle activation in wheelchair fencers

Błaszczyszyn, Monika; Borysiuk, Zbigniew; Piechota, Katarzyna; Kręcisz, Krzysztof; Zmarzły, D.

doi:10.1186/s13102-021-00369-y

Cited by 10 publications

(6 citation statements)

References 31 publications

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“…The reason for such a change is the reaction of the skin’s blood vessels in contracting in response to exercise. After that, the skin temperature at specific regions of the body may primarily increase when blood flow drifts from internal tissues to the skin surface, for dissipating extra core and muscles located underneath heat production due to an increased metabolic activity [ 5 , 43 , 44 , 45 ].…”

Section: Discussionmentioning

confidence: 99%

Thermovision as a Tool for Athletes to Verify the Symmetry of Work of Individual Muscle Segments

Szurko

Kasprzyk-Kucewicz

Cholewka

et al. 2022

IJERPH

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In the presented research, we characterised the temperature profiles and the degree of preparation for exercise of individual muscle groups of athletes We hypothesise that by means of thermal imaging studies, the effectiveness of the warm-up can be monitored to determine whether the effort of individual muscles is equal and symmetrical, which can help to avoid a potential injury. In the study, thermographic imaging was performed on a group of athletes exercising on a rowing ergometer involving almost 80% of the muscle parts of the human body for intense and symmetrical exercise. Thermovision studies have confirmed, based on the increased temperature of the muscle areas, that the rowing ergometer involves many muscle groups in training. Moreover, based on the shape of the temperature function obtained from individual body regions of interest, it was shown that conventional exercise on a rowing ergometer causes almost symmetrical work of the right and left sides of the body. Obtained temperature changes in most of the studied muscle areas showed minimum temperature reached the beginning of training—mostly phases 1 and 2. During the subsequent phases, the temperature increase was monitored, stopping at resting temperature. Significantly, temperature variations did not exceed 0.5 °C in all post-training phases. Statistical analyses did not show any significant differences in the symmetry of right and left muscle areas corresponding to the muscle location temperature. Thermal imaging may be an innovative wholly non-invasive and safe method, because checking induces adaptation processes, which may become indicators of an athlete’s efficiency. The imaging can be continuously repeated, and automatic comparison of average temperature or temperature difference may provide some clues that protect athletes from overtraining or serious injuries.

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Section: Discussionmentioning

confidence: 99%

Thermovision as a Tool for Athletes to Verify the Symmetry of Work of Individual Muscle Segments

Szurko

Kasprzyk-Kucewicz

Cholewka

et al. 2022

IJERPH

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“…The phenomenon of anticipatory activation is intended not only to maintain the fencer’s stable posture in the wheelchair but also to quickly move the torso toward the target area following the attacking arm. The effect of this is to reduce the complex reaction time and movement time in response to the opponent’s actions [ 20 , 27 ].…”

Section: Discussionmentioning

confidence: 99%

“…In the case of able-bodied fencers, a ground force reaction platform was also used to measure the vertical and horizontal forces of the activated muscles of both legs. All studied motor actions were triggered by signals given by the coaches participating in the experiment [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Correlations between the EMG Structure of Movement Patterns and Activity of Postural Muscles in Able-Bodied and Wheelchair Fencers

Borysiuk

Błaszczyszyn

Piechota

et al. 2022

Sensors

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The study involved Paralympic wheelchair fencers (N = 7) in two disability categories, and able-bodied female epee fencers (N = 7), members of the polish paralympic fencing teams. The performance of postural muscles and sword arm muscles in both groups of fencers, and of the front and rear leg muscles in the able-bodied fencers, was examined using surface electromyography with an accelerometer and the OptiTrack motion analysis system, as well as ground force reaction platforms. The activation sequence of individual muscles was determined and the structure of movement patterns in able-bodied and wheelchair fencers was formulated. A statistically significant correlation was found between the complex motor reaction time and latissimus dorsi muscle activation (p = 0.039, Z = −2.062) in wheelchair fencers. High correlations between the vertical force and EMG signal values of the gastrocnemius caput laterale muscle (0.85 for p = 0.022) were found in able-bodied fencers. A heuristic analysis indicated the significance of postural muscles in the movement patterns of wheelchair and able-bodied fencers. These muscles play a crucial role in the anticipatory postural adjustment of the trunk during technical fencing actions, including attacks on the opponent’s body.

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“…For real-valued time series, the wavelet coherence is real-valued if you use a real-valued analyzing wavelet, and complex-valued if you use a complex-valued analyzing wavelet [ 37 , 38 ].…”

Section: Methodsmentioning

confidence: 99%

Age-Related Differences in Intermuscular Coherence EMG-EMG of Ankle Joint Antagonist Muscle Activity during Maximal Leaning

Konieczny

Domaszewski

Skorupska

et al. 2022

Sensors

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Background: Intermuscular synchronization is one of the fundamental aspects of maintaining a stable posture and is of great importance in the aging process. This study aimed to assess muscle synchronization and postural stabilizer asymmetry during quiet standing and the limits of stability using wavelet analysis. Intermuscular synchrony and antagonistic sEMG-sEMG (surface electromyography) coherence asymmetry were evaluated in the tibialis anterior and soleus muscles. Methods: The study involved 20 elderly (aged 65 ± 3.6) and 20 young (aged 21 ± 1.3) subjects. The task was to perform a maximum forward bend in a standing position. The prone test was divided into three phases: quiet standing (10 s), dynamic learning, and maintenance of maximum leaning (20 s). Wavelet analysis of coherence was performed in the delta and beta bands. Results: Young subjects modulated interface coherences to a greater extent in the beta band. Analysis of postural stability during standing tasks showed that only the parameter R2b (the distance between the maximal and minimal position central of pressure), as an indicator for assessing the practical limits of stability, was found to be significantly associated with differences in aging. Conclusion: The results showed differences in the beta and delta band oscillations between young and older subjects in a postural task involving standing quietly and leaning forward.

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Wavelet coherence as a measure of trunk stabilizer muscle activation in wheelchair fencers

Cited by 10 publications

References 31 publications

Thermovision as a Tool for Athletes to Verify the Symmetry of Work of Individual Muscle Segments

Thermovision as a Tool for Athletes to Verify the Symmetry of Work of Individual Muscle Segments

Correlations between the EMG Structure of Movement Patterns and Activity of Postural Muscles in Able-Bodied and Wheelchair Fencers

Age-Related Differences in Intermuscular Coherence EMG-EMG of Ankle Joint Antagonist Muscle Activity during Maximal Leaning

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