Application of statistical parametric mapping for comparison of scapular kinematics and EMG

Kobayashi, Kotono; Umehara, Jun; Pataky, Todd C.; Yagi, Masahide; Hirono, Tetsuya; Ueda, Yasuyuki; Ichihashi, Noriaki

doi:10.1016/j.jbiomech.2022.111357

Cited by 6 publications

(5 citation statements)

References 27 publications

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“…Increasing task constraints, such as movement speed ( 42 , 43 ), could have further minimized the differences between settings. Despite this variation, humeral elevation, humeral rotation, and scapular upward rotation demonstrate minimal differences, similar visual movement trajectories, and similar variability between settings and to previously reported data (i.e., 10°–24°) ( 16 , 31 , 36 , 44 – 47 ). As between-groups comparisons are prevalent in biomechanics, the similarity of the mean and standard deviation of angle waveforms between the lab and field datasets is promising.…”

Section: Discussionsupporting

confidence: 83%

“…Differences in demographic characteristics between the field and lab groups were tested using an independent samples t -test ( α = .05) for height and Mann–Whitney U tests ( α = .05) for mass, age, and QuickDASH scores. For each WRAFT protocol task, humeral and scapular angle waveforms from the field settings were compared to waveforms in the lab descriptively and with statistical parametric mapping (SPM) ( 35 , 36 ) ( α = .05) in Matlab®. SPM was chosen to compare these two different groups, as it can compare full waveforms to assess magnitude and temporal factors.…”

Section: Methodsmentioning

confidence: 99%

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Towards in-field assessment of humeral and scapular kinematics: a comparison between laboratory and field settings using inertial sensors

Lordall,

Akinluyi,

Lang

2024

Front. Sports Act. Living

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IntroductionInertial measurement units allow for quantitative assessment of body motion in many environments. Determining the ability to measure upper limb motion with inertial measurement units, leveraging procedures traditionally used in the lab such as scapular calibration procedures and humeral axial rotation calculation, would expand the opportunities to assess upper limb function in externally valid environments. This study examined if humeral and scapular motion measured in different field settings is consistent with motion measured in a lab setting in similar tasks.MethodsTwenty-eight adults participated in the study (14 field setting, 14 lab setting). Three different types of field settings were included: home (n = 5), work (n = 4), and sports (n = 5). Field participants were matched to lab participants based on sex and body height. All participants were equipped with five inertial and magnetic measurement units (Xsens Awinda, Xsens Technlogies, NL, Fs = 100 Hz) on the torso, humeri, and scapulae. Humeral and scapular angles were measured during a functional task protocol consisting of seven tasks. Data from all three field settings were combined. Statistical parametric mapping (α = .05) was used to assess differences in waveforms between the lab and field data.Results and discussionFive out of seven tasks displayed no differences for humeral elevation and humeral axial rotation, while scapular upward rotation and tilt were not statistically different for any tasks. Scapular internal rotation variability was very high for the field setting, but not for the lab setting. Task-based differences in humeral elevation and humeral axial rotation may be related to equipment modifications for the field protocol and between subjects' variability in task performance. Data indicate that humeral elevation, humeral axial rotation, and scapular upward rotation can be measured in externally valid field settings, which is promising for the evaluation of upper limb movement in natural environments.

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Section: Discussionsupporting

confidence: 83%

Section: Methodsmentioning

confidence: 99%

Towards in-field assessment of humeral and scapular kinematics: a comparison between laboratory and field settings using inertial sensors

Lordall,

Akinluyi,

Lang

2024

Front. Sports Act. Living

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“…These approaches require a welldefined movement pattern, and thus, prior work has focused mainly on lower extremity applications given the cyclical gait pattern. There has been limited use of SPM analyses to measure shoulder kinematics before this study [23][24][25][26][27] . While this SPM approach works well for comparing tightly controlled shoulder movements like in the current study, this may not always be the case with shoulder movements, given the vast workspace in which to move and generate force with the upper extremity 28 .…”

Section: Discussionmentioning

confidence: 99%

Identifying Internal and External Shoulder Rotation Using a Kirigami-Based Shoulder Patch

Alkayyali,

Cowan,

Owen

et al. 2024

Preprint

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Internal and external rotation of the shoulder is often challenging to quantify in the clinic. The current study evaluates a novel, engineered, wearable sensor system for improved internal and external shoulder rotation monitoring, and applies it in healthy individuals. Using the design principles of the Japanese art of kirigami (folding and cutting of paper to design 3D shapes), the sensor platform conforms to the shape of the shoulder with on-board strain gauges to measure movement. Our objective was to examine how well this kirigami-inspired shoulder patch could identify differences in shoulder kinematics between internal and external rotation as healthy individuals moved their humerus through specified movement patterns. Seventeen participants donned the wearable sensor on their right shoulder. Four strain gauges measured skin deformation patterns while participants moved their arm into internal or external rotation based on Codman's paradox. One-dimensional statistical parametric mapping explored differences in strain voltage change of the strain gauges between internally-directed and externally-directed movements. The kirigami shoulder sensor, with its four on-board strain gauges, detected distinct differences in the movement pattern of participants who performed prescribed movements that resulted in either internal or external shoulder rotation. Three of the four strain gauges detected significant temporal differences between internal and external rotation (all p <0.047), particularly for the strain gauges placed distal or posterior to the acromion. These results are clinically significant, as they suggest a new class of wearable sensors conforming to the shoulder can measure differences in skin surface deformation corresponding to the underlying humerus rotation.

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“…Through investigation, it is found that there are many scallop mantle processed foods in the Chinese market, which are mainly sold in the form of dry products, smoked products, ready-to-eat snacks, canned products and hoisin sauce, etc. In certain coastal regions, the consumption of raw or cooked dishes prepared with scallop mantle as a primary or ancillary ingredient is prevalent among the local population [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Scallop Mantle Toxin on Intestinal Microflora and Intestinal Barrier Function in Mice

Geng,

Lin,

Hasegawa

et al. 2024

Toxins

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Previous studies have shown that feeding mice with food containing mantle tissue from Japanese scallops results in aggravated liver and kidney damage, ultimately resulting in mortality within weeks. The aim of this study is to evaluate the toxicity of scallop mantle in China’s coastal areas and explore the impact of scallop mantle toxins (SMT) on intestinal barrier integrity and gut microbiota in mice. The Illumina MiSeq sequencing of V3-V4 hypervariable regions of 16S ribosomal RNA was employed to study the alterations in gut microbiota in the feces of SMT mice. The results showed that intestinal flora abundance and diversity in the SMT group were decreased. Compared with the control group, significant increases were observed in serum indexes related to liver, intestine, inflammation, and kidney functions among SMT-exposed mice. Accompanied by varying degrees of tissue damage observed within these organs, the beneficial bacteria of Muribaculaceae and Marinifilaceae significantly reduced, while the harmful bacteria of Enterobacteriaceae and Helicobacter were significantly increased. Taken together, this article elucidates the inflammation and glucose metabolism disorder caused by scallop mantle toxin in mice from the angle of gut microbiota and metabolism. SMT can destroy the equilibrium of intestinal flora and damage the intestinal mucosal barrier, which leads to glucose metabolism disorder and intestinal dysfunction and may ultimately bring about systemic toxicity.

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Application of statistical parametric mapping for comparison of scapular kinematics and EMG

Cited by 6 publications

References 27 publications

Towards in-field assessment of humeral and scapular kinematics: a comparison between laboratory and field settings using inertial sensors

Towards in-field assessment of humeral and scapular kinematics: a comparison between laboratory and field settings using inertial sensors

Identifying Internal and External Shoulder Rotation Using a Kirigami-Based Shoulder Patch

Effects of Scallop Mantle Toxin on Intestinal Microflora and Intestinal Barrier Function in Mice

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