Effect of Footwear Modifications on Oscillations at the Achilles Tendon during Running on a Treadmill and Over Ground: A Cross-Sectional Study

Meinert, Ilka; Brown, Niklas; Alt, Wilfried

doi:10.1371/journal.pone.0152435

Cited by 6 publications

(4 citation statements)

References 30 publications

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“…EMG activities were recorded using a wireless system (Trigno™ Personal Monitor; Delsys Inc., Boston, MA). Heel-strike events were detected using the accelerometers of two Trigno sensors positioned at the ankle over the Achilles tendons [24,25]. All sensors were secured with elastic wrap.…”

Section: Methodsmentioning

confidence: 99%

Abnormal muscle activation patterns are associated with chronic gait deficits following traumatic brain injury

2018

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Section: Methodsmentioning

confidence: 99%

Abnormal muscle activation patterns are associated with chronic gait deficits following traumatic brain injury

2018

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“…The grey area in Fig. 3 indicates the regional strontium isotope baseline defined as ± 1.5 IQR (interquartile range) of the sediment and water values including data from Alto de Reionoso and El Prado sites 41 . However, the Sr isotopic composition of the enamel in premolar P1 and molar M1 of Individual E450 reflects values highly enriched in radiogenic strontium, with 87 Sr/ 86 Sr ratios = 0.7126.…”

Section: Resultsmentioning

confidence: 99%

“…The possible area of mobility is limited to the Douro basin, which geologically shows remarkable homogeneity in the strontium content 49 . Besides, the Douro basin shows a suitable and homogeneous oxygen isotope composition 50 , 51 and also strontium isotopic composition, as indicated by the scarce isotopic studies of the region 41 , 52 .…”

Section: Discussionmentioning

confidence: 99%

Strontium and oxygen isotopes to trace mobility routes during the Bell Beaker period in the north of Spain

Ortega

Fernández

Guede

et al. 2021

Sci Rep

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Strontium and oxygen isotopes of individuals from El Hundido and Valdescusa (north of Spain) sites, corresponding to the Bell Beaker culture, were analysed in order to determine mobility patterns and provenance areas. Strontium and oxygen isotope ratios in three teeth from two individuals at El Hundido and two teeth from the five individuals at Valdescusa were studied. The analyses were performed in both dentine and enamel fractions. 87Sr/86Sr ratios of El Hundido individuals indicate one was of foreign origin and the other was local whereas at Valdescusa were all of foreign provenance. Calculated δ18Ow values of El Hundido suggest a provenance from the geographical area close to the site while the Valdescusa would come from a warmer region. The comparison of oxygen and strontium isotope signatures indicate the west of the Iberian Peninsula (Zamora or the east of Leon regions) as the provenance area for the foreign individual at El Hundido and southwest France (Garonne basin) as the region of provenance for the Valdescusa.

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“…During both trials, heel-strike events were detected using the accelerometers of 2 Trigno sensors (sampling at 148 Hz) positioned at the ankle over the Achilles tendons. 8,34,35 We monitored the output of the EMG sensors during data collection in real-time, and if any sensors lost contact or developed an inappropriate level of noise, the trial was stopped, the sensor was reattached, and the trial was repeated. EMG sensors were placed over the target muscle bellies following the SENIAM guidelines for EMG preparation and placement.…”

Section: Methodsmentioning

confidence: 99%

Individuals with Chronic Mild-to-Moderate Traumatic Brain Injury Exhibit Decreased Neuromuscular Complexity During Gait

Tyler

Thelen

2022

Neurorehabil Neural Repair

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Background Synergy analysis provides a means of quantifying the complexity of neuromuscular control during gait. Prior studies have shown evidence of reduced neuromuscular complexity during gait in individuals with neurological disorders associated with stroke, cerebral palsy, and Parkinson’s disease. Objective The purpose of this study was to investigate neuromuscular complexity during gait in individuals who experienced a prior traumatic brain injury (TBI) that resulted in chronic balance deficits. Methods We measured and analyzed lower extremity electromyographic data during treadmill and overground walking for 44 individuals with residual balance deficits from a mild-to-moderate TBI at least 1 year prior. We also tested 20 unimpaired controls as a comparison. Muscle synergies were calculated for each limb using non-negative matrix factorization of the activation patterns for 6 leg muscles. We quantified neuromuscular complexity using Walk-DMC, a normalized metric of the total variance accounted for by a single synergy, in which a Walk-DMC score of 100 represents normal variance accounted for. We compared group average synergy structures and inter-limb similarity using cosine similarity. We also quantified each individual’s gait and balance using the Sensory Organization Test, the Dynamic Gait Index, and the Six-Minute Walk Test. Results Neuromuscular complexity was diminished for individuals with a prior TBI. Walk-DMC averaged 92.8 ± 12.3 for the TBI group during overground walking, which was significantly less than seen in controls (100.0 ± 10.0). Individuals with a prior TBI exhibited 13% slower overground walking speeds than controls and reduced performance on the Dynamic Gait Index (18.5 ± 4.7 out of 24). However, Walk-DMC measures were insufficient to stratify variations in assessments of gait and balance performance. Group average synergy structures were similar between groups, although there were considerable between-group differences in the inter-limb similarity of the synergy activation vectors. Conclusions Individuals with gait and balance deficits due to a prior TBI exhibit evidence of decreased neuromuscular complexity during gait. Our results suggest that individuals with TBI exhibit similar muscle synergy weightings as controls, but altered control of the temporal activation of these muscle weightings.

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Effect of Footwear Modifications on Oscillations at the Achilles Tendon during Running on a Treadmill and Over Ground: A Cross-Sectional Study

Cited by 6 publications

References 30 publications

Abnormal muscle activation patterns are associated with chronic gait deficits following traumatic brain injury

Abnormal muscle activation patterns are associated with chronic gait deficits following traumatic brain injury

Strontium and oxygen isotopes to trace mobility routes during the Bell Beaker period in the north of Spain

Individuals with Chronic Mild-to-Moderate Traumatic Brain Injury Exhibit Decreased Neuromuscular Complexity During Gait

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