Kāju un muguras muskuļu saspringuma frekvenču analīze atkarībā no stāvēšanas virsmas seguma
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Date
2022
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Rīgas Stradiņa universitāte
Rīga Stradiņš University
Rīga Stradiņš University
Abstract
Pētījuma nosaukums: Kāju un muguras muskuļu saspringuma frekvenču analīze atkarībā no stāvēšanas virsmas seguma
Mērķis: Izvērtēt un salīdzināt apakšējo ekstremitāšu un mugurkaula jostas daļas muskuļu saspringuma elektriskās aktivitātes frekvences un to izmaiņas, stāvot uz cietas grīdas, industriālā pretnoguruma paklāja, biroja pretnoguruma paklāja un izmantojot stāvkrēslu.
Pētījuma dizains: Kvantitatīvs, eksperimentāls šķērsgriezuma pētījums.
Pētījuma metodes: Pētījumā piedalījās 13 veseli brīvprātīgie, kas stāvēja pa 20 minūtēm uz dažādām virsmām – cietas grīdas, industriālā pretnoguruma paklāja, biroja pretnoguruma paklāja un, atbalstoties pret stāvkrēslu. Paralēli dalībnieki strādāja ar datoru, kas novietots uz augstumā regulējama galda. Muskuļu saspringuma elektriskās aktivitātes frekvence bilaterāli m. tibialis anterior, m. peroneus longus, m. gluteus medius un jostas daļas m. erector spinae tika noteikta ar virsmas elektromiogrāfiju ar bezvadu elektrodiem (BTS FREEMG 1000, BTS Bioengineering) un ražotāja nodrošināto signālu apstrādes datorprogrammu. Dati tika analizēti MS Excel un SPSS 26 programmā.
Rezultāti: Salīdzinot stāvēšanu uz grīdas un stāvēšanu uz pretnoguruma paklājiem, visās muskuļu grupās elektriskās aktivitātes frekvenču mediāna bija augstāka un atšķirība bija statistiski nozīmīga (p<0,05). Salīdzinot stāvēšanu uz grīdas ar stāvēšanu, atbalstoties pret stāvkrēslu, muskuļu elektriskā aktivitāte apakšstilba muskuļos bija augstāka, lietojot stāvkrēslu, bet atšķirība nebija statistiski nozīmīga (p>0,05). M. gluteus medius un m. erector spinae muskuļu elektriskās aktivitātes frekvence samazinājās, lietojot stāvkrēslu, salīdzinot ar stāvēšanu uz grīdas. Muguras muskuļos atšķirība bija statistiski nozīmīga (p<0,05).
Secinājumi:
1.Stāvēšanas seguma maiņa izmaina muskuļu saspringuma elektrisko aktivitāti apakšējo ekstremitāšu un muguras muskuļos, stāvot uz mīkstākas virsmas, muskuļu elektriskās aktivitātes frekvence ir augstāka. Muskuļu saspringuma elektriskās aktivitātes izmaiņas bija visizteiktākās apakšstilba muskuļos.
2.Stāvot, atbalstoties pret stāvkrēslu, tiek novērota muguras un iegurņa muskuļu saspringuma elektriskās aktivitātes samazināšanās salīdzinot ar stāvēšanu uz grīdas un pretnoguruma paklājiem.
Research Title: Analysis of leg and back muscle tension frequencies depending on the standing surface Aim of the Study: To evaluate and compare the electrical activity frequencies and their changes of the lower extremity and lumbar spine muscles when standing on the hard floor, industrial anti-fatigue mat, office anti-fatigue mat and using a sit-stand chair. Research Design: Quantitative, experimental cross-sectional study Methods: 13 healthy stood for 20 minutes on different surfaces – hard floor, industrial anti-fatigue mat, office anti-fatigue mat and perching on a sit-stand chair. While standing, participants worked on a computer placed on a height-adjustable table. Frequency of electrical activity of muscle tension of m. tibialis anterior, m. peroneus longus, m. gluteus medius and lumbar m. erector spinae bilaterally was determined by surface electromyography with wireless electrodes (BTS FREEMG 1000, BTS Bioengineering) and a signal processing software provided by the manufacturer. The data were analyzed in MS Excel and SPSS 26 program. Results: Comparing standing on the floor and standing on anti-fatigue mats, the median frequency of electrical activity was higher in all muscle groups and the difference was statistically significant (p<0.05). The electrical activity of the muscles in the lower leg muscles was higher when perching on a sit-stand chair, compared to standing on the floor, but the difference was not statistically significant (p>0.05). The frequency of electrical activity of the m. gluteus medius un m. erector spinae decreased with the use of a sit-stand chair compared to standing on the floor. The difference in spinal muscles was statistically significant (p<0.05). Conclusions: 1.Changes of the electrical activity frequencies of muscle tension in lower extremities and spinal muscles depends on standing surface, while standing on a softer surface, the frequency of electrical activity of muscles is higher. Changes in the electrical activity of muscle tension were more prominent in the lower leg muscles. 2.When standing using a sit-stand chair, a decrease in the electrical activity of the spinal and pelvis muscles is observed compared to standing on the floor and anti-fatigue mats.
Research Title: Analysis of leg and back muscle tension frequencies depending on the standing surface Aim of the Study: To evaluate and compare the electrical activity frequencies and their changes of the lower extremity and lumbar spine muscles when standing on the hard floor, industrial anti-fatigue mat, office anti-fatigue mat and using a sit-stand chair. Research Design: Quantitative, experimental cross-sectional study Methods: 13 healthy stood for 20 minutes on different surfaces – hard floor, industrial anti-fatigue mat, office anti-fatigue mat and perching on a sit-stand chair. While standing, participants worked on a computer placed on a height-adjustable table. Frequency of electrical activity of muscle tension of m. tibialis anterior, m. peroneus longus, m. gluteus medius and lumbar m. erector spinae bilaterally was determined by surface electromyography with wireless electrodes (BTS FREEMG 1000, BTS Bioengineering) and a signal processing software provided by the manufacturer. The data were analyzed in MS Excel and SPSS 26 program. Results: Comparing standing on the floor and standing on anti-fatigue mats, the median frequency of electrical activity was higher in all muscle groups and the difference was statistically significant (p<0.05). The electrical activity of the muscles in the lower leg muscles was higher when perching on a sit-stand chair, compared to standing on the floor, but the difference was not statistically significant (p>0.05). The frequency of electrical activity of the m. gluteus medius un m. erector spinae decreased with the use of a sit-stand chair compared to standing on the floor. The difference in spinal muscles was statistically significant (p<0.05). Conclusions: 1.Changes of the electrical activity frequencies of muscle tension in lower extremities and spinal muscles depends on standing surface, while standing on a softer surface, the frequency of electrical activity of muscles is higher. Changes in the electrical activity of muscle tension were more prominent in the lower leg muscles. 2.When standing using a sit-stand chair, a decrease in the electrical activity of the spinal and pelvis muscles is observed compared to standing on the floor and anti-fatigue mats.
Description
Fizioterapija
Physiotherapy
Veselības aprūpe
Health Care
Physiotherapy
Veselības aprūpe
Health Care
Keywords
Ergonomika, muskuļu elektriskā aktivitāte, stāvēšana, sEMG, ergonomiskie pretnoguruma paklāji, stāvkrēsls, Ergonomic, muscle electrical activity, sEMG, anti-fatigue mats, sit-stand chair, standing