Relationships Between Hand and Foot Preferences

Barut, Çağatay; Özer, Cenk Murat; Sevinç, Özdemir; Gümüş, Mustafa; Yunten, Zafer

doi:10.1080/00207450600582033

Cited by 40 publications

(27 citation statements)

References 27 publications

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“…Since the first discoveries about the existence of lateralized functions in the human brain [1], they have been suggested right-left asymmetries to many of the higher cerebral functions, including motor control [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Could be the predominantly-used hemibody related to the weight bearing distribution modified by the chronic hemiparesis after stroke?

2015

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Since the first Broca publications issued from 1970s, lateralized functions in the human brain have urged the researchers to postulate hypothesis based in the right-left asymmetries and, according to some theories, the lateralization of the voluntary motor control could represent a solution to avoid redundant process optimizing space and time. Supported by this idea, the clinicians and researchers tend to concept that the chronic hemiplegic stroke patients learn to use predominantly the non-affected hemibody after stroke in which is more convenient to execute their daily life activities, modifying their natural preference in some cases. Although could seems reasonable conceptualize the non-affected side as the predominantly-used hemibody for motor tasks after stroke (convenience hypothesis), evidences point to exist also hemiplegic patients that developed a predominantly use of the affected side. To float an idea, in terms of weight bearing distribution during upright position, the researchers have found patients overloading the non-affected hemibody, as expected; but also patients overloading the affected hemibody, not presenting necessarily Pusher's syndrome cases. Given the evidences, we could propose a severity-modulated predominance hypothesis which complements the convenience hypothesis. According to our complementary hypothesis, the severity of the motor disability presented in the hemiparesis condition (light, moderate and heavy severity) could determine a predominant use defined by preference (light to moderate severity) or convenience (moderate to heavy severity). In this hypothesis, we postulate ideas from a rehabilitation perspective to be incorporated in treatment programs.

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Section: Introductionmentioning

confidence: 99%

Could be the predominantly-used hemibody related to the weight bearing distribution modified by the chronic hemiparesis after stroke?

2015

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“…Strong right-handers may be defined as having a laterality index (LI) 1 greater than 75, and strong left-handers as having an LI lower than −75 on the Edinburgh Inventory, with all those in between considered ambidextrous (Knecht et al, 2000). In other studies, the cut-off for delimiting ambidexterity is set between +50 and −50 (Auer et al, 2009), between +40 and −40 (Li, Zhu, & Nuttall, 2003), between +20 and −20 (Cabinio et al, 2010) or between +15 and −15 (Barut, Ozer, Sevinc, Gumus, & Yunten, 2007) on the Edinburgh Inventory or a modified version of it. In another study, only participants who reported using 1 Laterality index (LI) is usually calculated as [number of right-hand responsesnumber of lefthand responses/total number of responses], and varies between 1 (completely right-handed) and -1 (completely left-handed), or between -100 and 100 if the LI is multiplied by 100.…”

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confidence: 99%

How should “ambidexterity” be estimated?

Fagard

Chapelain

Bonnet

2015

Laterality: Asymmetries of Body, Brain and Cognition

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Weak and absent hand preferences have often been associated with developmental disorders or with cognitive functioning in the typical population. The results of different studies in this area, however, are not always coherent. One likely reason for discrepancies in findings is the diversity of cut-offs used to define ambidexterity and mixed right- and mixed left-handedness. Establishing and applying a common criterion would constitute an important step on the way to producing systematically comparable results. We thus decided to try to identify criteria for classifying individuals ambidextrous, mixed right- or left-handed or strong right- or left-handed. For that purpose, we first administered a handedness questionnaire to 716 individuals and performed multiple correspondence analyses to define handedness groups. Twenty-four participants were categorized as ambidextrous (3.3%), as opposed to mixed (29.2%) and strong (56%) right-handers, and to mixed (9.1%) and strong (2.4%) left-handers. We then compared this categorization with laterality index (LI)-based categories using different cut-offs and found that it was most correlated with LI cut-offs at -90, -30, +30 and +90, successively delimiting strong left-handedness, mixed left-handedness, ambidexterity (-30 to +30), mixed right-handedness and strong right-handedness. The characteristics of ambidextrous and lateralized individuals are also compared.

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“…4 In a study by Barut et al, 90% of right-handed women between 18 and 42 years of age preferred their right feet compared with 76% in their male counterparts; for left-handed women, it was 79% who preferred their left foot compared with 57% in their male counterparts. 1 Among older adults, Kumar et al found that in a population of mostly males between 56 and 83 years of age, 94% had right-side dominance of both hand and foot, and that right-side dominance increased with increasing age. 9 Thus, dominance of ‘handedness’ appeared to operate in accord with dominance of ‘footedness’ for the vast majority of persons, although footedness may depend upon context of a specific foot task.…”

Section: Introductionmentioning

confidence: 99%

The Occurrence of Ipsilateral or Contralateral Foot Disorders and Hand Dominance

Nguyen

Dufour

Positano

et al. 2013

J Am Podiatr Med Assoc

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Background To our knowledge, hand dominance and side of foot disorders has not been described in the literature. The purpose of the current study was to evaluate whether hand dominance was associated with ipsilateral foot disorders among community-dwelling older men and women Methods Data were from the Framingham Foot Study (n=2,089, examined 2002–2008). Hand preference for writing was used to classify hand dominance. Foot disorders and side of disorders were based on a validated foot examination. Generalized linear models with GEE was used to estimate odds ratios (OR) and 95% confidence intervals (CI), accounting for intra-person variability. Results Left-handed people were less likely to have foot pain or any foot disorders ipsilateral, but were more likely to have hallux valgus ipsilateral to the left hand. Among right-handed people, the following statistically significant increased odds of having an ipsilateral foot disorder versus contralateral foot disorder were seen: 30% for Morton’s Neuroma, 18% for hammer toes, 21% for lesser toe deformity, and a 2-fold increased odds of any foot disorder; there was a 17% decreased odds for Tailor’s Bunion, and an 11% decreased odds for pes cavus. Conclusion For the 2089 study participants, certain forefoot disorders were shown to be ipsilateral while other foot disorders were contralateral to the dominant hand. It is possible that the side of the dominant hand was a proxy for biomechanics of the dominant foot that may explain some of the associations with ipsilateral forefoot disorders.

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Relationships Between Hand and Foot Preferences

Cited by 40 publications

References 27 publications

Could be the predominantly-used hemibody related to the weight bearing distribution modified by the chronic hemiparesis after stroke?

Could be the predominantly-used hemibody related to the weight bearing distribution modified by the chronic hemiparesis after stroke?

How should “ambidexterity” be estimated?

The Occurrence of Ipsilateral or Contralateral Foot Disorders and Hand Dominance

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