Can size and rigidity of objects influence infant's proximal and distal adjustments of reaching?

Silva, Fernanda Pereira dos Santos; Rocha, Nelci Adriana Cicuto Ferreira; Tudella, Eloísa

doi:10.1590/s1413-35552011000100003

Cited by 3 publications

(3 citation statements)

References 29 publications

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“…Desta forma, para vencer o peso adicional, conclui-se que possivelmente ocorreu um maior recrutamento de fibras musculares dessa musculatura. Entretanto, a ação do bíceps é prejudicada em situações de pronação de antebraço e, para garantir uma melhor ação do sistema em resposta à carga com vantagem biomecânica, utiliza-se a ação supinadora do bíceps (SMITH; WEISS; LEHMKUHL, 1997). Dessa forma, podemos afirmar que o peso de 20% da massa foi suficiente para que o lactente modificasse a orientação da mão da posição horizontal (ou pronada) para uma posição verticalizada (com maior supinação), favorecendo o desempenho funcional do alcance.…”

Section: Discussionunclassified

Influência Do Peso Adicional No Alcance Manual De Lactentes a Termo E Pré-Termo: Análise De Variáveis Categóricas Do Movimento

Fonseca¹,

Oliveira²,

Carregaro³

et al. 2018

Cad. Bras. Ter. Ocup.

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Resumo:Objetivo: Investigar o efeito do peso adicional nos ajustes proximais e distais do alcance em lactentes a termo (AT) e pré-termo tardios (PTT). Método: Foram avaliados 10 lactentes AT e 9 PTT dos 5 aos 7 meses de idade. As variáveis analisadas foram: a) ajustes proximais: unimanuais ou bimanuais; b) ajustes distais: abertura das mãos (aberta, fechada ou semiaberta) e orientação das mãos (horizontalizada, verticalizada ou oblíqua). Os procedimentos analisados foram: P1 (linha de base) e P2 (acréscimo de 20% da massa do membro superior de peso adicional). Para verificar a associação entre os procedimentos e as variáveis dependentes utilizou-se o Teste Qui-quadrado (p<0,05). Resultados: O peso adicional proporcionou a diminuição de alcances bimanuais aos 5 e 7 meses no grupo PTT, o aumento da frequência de mão verticalizada e a diminuição da frequência de mão aberta no início do movimento, aos 6 meses. No grupo AT, o peso implicou no aumento da mão verticalizada no início e no fim do movimento, aos 5 meses, e ao final do movimento, aos 7 meses, e diminuiu a frequência de mão aberta no início e final do alcance, aos 6 meses. Conclusão: O peso adicional favoreceu um movimento mais maduro na maioria das variáveis analisadas e, de forma mais expressiva, no grupo prematuro. Assim, pode tornar-se um instrumento para o treino inicial do alcance, quando o objetivo for a estimulação de alcances unimanuais com a mão verticalizada.Abstract: Objective: The aim of this work is to investigate the effects of additional weight in the proximal and distal adjustments of the reaching behavior of full-term and preterm infants. Method: We evaluated 10 full-term and 9 low risk preterm infants from 5 to 7 months age. The following variables were analyzed: a) proximal adjustments: unimanual or bimanual; b) distal adjustments: hand opening (open, closed, semi-open) and hand orientation (horizontal, vertical, oblique). Variables were analyzed in two procedures: P1 (baseline) and P2 (addition of 20% of the total mass of the infant's upper limb). To verify the association between procedures and dependent variables was applied Chi-Square Test (p<0,05). Results: Additional weight decreased of bimanual frequency for the preterm group at 5 and 7 months old, increased vertical hand frequency and decreased open hand frequency at 6 months. In the full-term group, additional weight increased the vertical hand frequency at the initiation and at the end of the movement at 5 months and at the end of the movement at 7 months. It also decreased open hand frequency at the initiation and at the end of the reaching at 6 months. Conclusion: Additional weight favored a more mature movement in the majority of variables analyzed, more expressively in the preterm group. Therefore, it can become an instrument of training this skill in the beginning of the reaching, when looking for verticalized hand unimanual reaching stimulation. licença Creative Commons Attribution Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons At...

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Section: Discussionunclassified

Influência Do Peso Adicional No Alcance Manual De Lactentes a Termo E Pré-Termo: Análise De Variáveis Categóricas Do Movimento

Fonseca¹,

Oliveira²,

Carregaro³

et al. 2018

Cad. Bras. Ter. Ocup.

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“…For example, malleable toys can produce more reaches than rigid ones, whilst big rigid toys can produce more bimanual than unimanual reaches 29 . Considering studies that have found influence of the physical properties of objects on manual skills in infants 29,30 , reporting a maximum of physical characteristics of the used toys in the studies are of essential relevance to allow methodological replications in other research and clinical practice.…”

Section: Which Methodological Aspects the Studies Have Been Using To mentioning

confidence: 99%

“…The studies with fair or poor methodological quality [5][6][7][8][9]11,20,24,27,[25][26][27][28][29][30][31][32][33]35 and/or level of evidence "2b", degree of recommendation "B", [5][6][7][20][21][22][23][24][25][26][27][28][29][30][31][32][33] , addressed the three approaches discussed earlier -sticky mittens paradigm, task-specific training, and contingent reinforcement -, but most of them used the sticky mittens paradigm. It calls attention that none of the studies using the sticky mittens paradigm scored highly in the methodological quality.…”

Section: What Have These Studies Found?mentioning

confidence: 99%

Evidence of training influence on infant manual behavior: a systematic review

Nascimento

Tedesco

Soares

2019

jhgd

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Introduction: Researchers have widely investigated how interventions by means of training can improve manual behaviors in infants. However, no systematic review has been found on this topic. Objective: To analyze the quality of scientific evidence considering the methodological quality and level of evidence by type of study in research on training of object-directed manual behaviors in infants in the first 18 months of life. Methods: National Library of Medicine (PubMed/MEDLINE), Latin American and Caribbean Health Sciences (LILACS), Virtual Health Library (BIREME/BVS), Science Direct, SciELO, and Physiotherapy Evidence Database (PEDro) databases were used. Only clinical trials that assessed the benefits of manual object-directed training in infants and were published up to February 2018, in English, were included. The Cochrane Collaboration Model was adapted to extract bibliographical data from the articles and their methodological quality was assessed using the PEDro scale and the Oxford Centre for Evidence-Based Medicine’s Levels of Evidence. Results: Twenty one clinical trials were included. Studies investigated typically developing full-term infants, preterm infants, and infants at risk for autism spectrum disorders. Trainings were administered to infants by means of “sticky mittens” paradigm, task-specific practice, or contingency reinforcement. Most of the studies presented fair or poor methodological quality. Only studies that used task-specific active practice presented high methodological quality. Conclusions: The results indicate there is high quality evidence that task-specific training improves object-directed manual behaviors in typically developing infants and preterm infants in the first 2-4 months of life. Studies addressing infants with established diagnoses of developmental dysfunction are lacking.

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Relation between hand function and gross motor function in full term infants aged 4 to 8 months

Nogueira¹,

Figueiredo²,

Gonçalves³

et al. 2015

Braz. J. Phys. Ther.

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Background: In children, reaching emerges around four months of age, which is followed by rapid changes in hand function and concomitant changes in gross motor function, including the acquisition of independent sitting. Although there is a close functional relationship between these domains, to date they have been investigated separately. Objective: To investigate the longitudinal profile of changes and the relationship between the development of hand function (i.e. reaching for and manipulating an object) and gross motor function in 13 normally developing children born at term who were evaluated every 15 days from 4 to 8 months of age. Method: The number of reaches and the period (i.e. time) of manipulation to an object were extracted from video synchronized with the Qualisys(r) movement analysis system. Gross motor function was measured using the Alberta Infant Motor Scale. ANOVA for repeated measures was used to test the effect of age on the number of reaches, the time of manipulation and gross motor function. Hierarchical regression models were used to test the associations of reaching and manipulation with gross motor function. Results: Results revealed a significant increase in the number of reaches (p<0.001), the time of manipulation (p<0.001) and gross motor function (p<0.001) over time, as well as associations between reaching and gross motor function (R2=0.84; p<0.001) and manipulation and gross motor function (R2=0.13; p=0.02) from 4 to 6 months of age. Associations from 6 to 8 months of age were not significant. Conclusion: The relationship between hand function and gross motor function was not constant, and the age span from 4 to 6 months was a critical period of interdependency of hand function and gross motor function development.

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Can size and rigidity of objects influence infant's proximal and distal adjustments of reaching?

Cited by 3 publications

References 29 publications

Influência Do Peso Adicional No Alcance Manual De Lactentes a Termo E Pré-Termo: Análise De Variáveis Categóricas Do Movimento

Influência Do Peso Adicional No Alcance Manual De Lactentes a Termo E Pré-Termo: Análise De Variáveis Categóricas Do Movimento

Evidence of training influence on infant manual behavior: a systematic review

Relation between hand function and gross motor function in full term infants aged 4 to 8 months

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