Quantifying the Contributions of the Flexor Digitorum Brevis Muscle on Postural Stability

Okai, Liria Akie; Kohn, André Fábio

doi:10.1123/mc.2013-0066

Cited by 12 publications

(8 citation statements)

References 4 publications

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“…In fact, plantar cutaneous afferents play a role in stabilizing the feet, providing an additional source of sensory input that enhances the detection of movement and controlling small‐ amplitude body sway (Kavounoudias et al, 1998, 1999). More particularly, some studies have suggested the role of toes in postural control (Okay and Kohn, 2015; Tanaka et al, 1996a, 1996b; Tortolero et al, 2008; Viseux et al, 2018). In order to maintain balance, toes are used to correct for postural disturbance.…”

Section: Discussionmentioning

confidence: 99%

“…The toes provide a stable surface area that remains in contact with the ground and serve to relay relevant sensory information to the central nervous system (Ku et al, 2012). Some authors (Okay and Kohn, 2015; Tortolero et al, 2008) showed that the toe muscle stimulation was capable of regulating CoP displacements, and may be a good candidate for controlling balance. In those studies, forward movement of the CoP was induced by different intensity of electrical stimulation applied to the toe muscles.…”

Section: Discussionmentioning

confidence: 99%

“…The increased distribution of cutaneous afferents in the toes compared with the heel (Inglis et al, 2002; Stzralkowski et al, 2018) may reflect the postural significance of feedback from the toes in regard to the control of standing balance (Inglis et al, 2002; Stzralkowski et al, 2018; Wright et al, 2012; Viseux et al, 2018). In fact, the toes play a unique and important role in standing balance (Okay and Kohn, 2015; Tortolero et al, 2008; Tanaka et al, 1996a, 1996b; Viseux et al, 2018). For example, a low focal additional thickness placed under the toes showed a change in stabilometric parameters of the CoP (Viseux et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Less Than One Millimeter Under the Great Toe is Enough to Change Balance Ability in Elite Women Handball Players

Viseux

Barbier

Parreira

et al. 2019

Journal of Human Kinetics

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Team handball is a complex intermittent sport game, which requires several motor abilities and effective postural control. Objective evaluation of stabilometric variables may be interesting to assess and improve functional parameters by postural control management. The purpose of the study was to evaluate the effects of a small additional thickness placed under the great toe (TUGT) on the Centre of Pressure (CoP) parameters in elite women handball players. Fourteen elite women handball players voluntarily participated in this study. Two conditions were compared: TUGT 0 (control) and TUGT 0.8 mm; four variables were computed from the CoP displacements. A paired T‐test was performed for each variable. This study concludes that a low focal additional thickness placed under both great toes has an effect on the CoP measures used to assess postural control during an unperturbed stance. These results suggest that a low TUGT could contribute to a change in balance ability, and may be of clinical interest. This brings new perspectives in the management of athletes to prevent injury risk and optimize performance.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Less Than One Millimeter Under the Great Toe is Enough to Change Balance Ability in Elite Women Handball Players

Viseux

Barbier

Parreira

et al. 2019

Journal of Human Kinetics

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“…These functions are also related to balance ability and walking. Okai et al reported that FDB has a vital contribution to postural control 24 ) . Moreover, Green and Brekke, and Hughes et al.…”

Section: Discussionmentioning

confidence: 99%

Relationship between transverse arch height and foot muscles evaluated by ultrasound imaging device

et al. 2018

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[Purpose] Few studies on the transverse arch (TA) in the forefoot have been conducted. The forefoot is where pains occur most frequently and is related to walking and balance; hence, paying attention to TA is vital. However, the relationship between TA and foot muscles has not been investigated. Therefore, this study aims to investigate muscles related to TA. [Subjects and Methods] Nineteen healthy young males were included. Measurements of their feet, excluding one foot with recent foot pain (n=37), were obtained. The height of TA (TAH) was measured in two ways: during 10% and 90% loading of body weight. The cross-sectional area and thickness of five muscles were measured: flexor digitorum longus, peroneus longus and brevis, flexor hallucis brevis, flexor digitorum brevis (FDB) and abductor hallucis (ABH). All measurements were performed with an ultrasound device. [Results] FDB and ABH were correlated with TAH during 10% and 90% loading after removing the effect of body mass index and age. The greater FDB and ABH, the higher TAH. [Conclusion] As FDB becomes larger, the second, third and fourth metatarsal heads are raised more. Furthermore, the height of the first metatarsal head is lowered by a larger ABH. These mechanisms may increase TAH.

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“…After skin preparation, self-adhesive bipolar electrodes were attached over foot muscles (FDB and AbH) ( Kelly et al, 2014 ; Okai & Kohn, 2015 ) and ankle muscles (TA, MG, LG and PL) in accordance with SENIAM recommendations ( Hermens et al, 2000 ). The electrodes were placed along the course of muscle fibers with a distance of two cm between the centers of electrodes.…”

Section: Methodsmentioning

confidence: 99%

Difference in the recruitment of intrinsic foot muscles in the elderly under static and dynamic postural conditions

Lai

Rui-yan

Zhou

et al. 2023

PeerJ

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Background The effect of foot, especially intrinsic muscles, on postural control and its related mechanisms remain unclear due to the complex structure. Therefore, this study aims to investigate the activation of intrinsic foot muscles in the elderly under static and dynamic postural tasks. Methods Twenty-one elderly participants were included to perform different postural tests (sensory organization test (SOT), motor control test (MCT), limit of stability test (LOS), and unilateral stance test) by a NeuroCom Balance Manager System. The participants were instructed to maintain postural stability under conditions with combined different sensory inputs (vision, vestibular, and proprioception) in SOT as well as conditions with translation disturbance in MCT, and to perform an active weight-shifting tasks in LOS. During these tasks, muscle activation were simultaneously acquired from intrinsic foot muscles (abductor halluces (AbH) and flexor digitorum brevis (FDB)) and ankle muscles (anterior tibialis, medial head of gastrocnemius, lateral head of gastrocnemius, and peroneus longus). The root-mean-square amplitude of these muscles in postural tasks was calculated and normalized with the EMG activity in unilateral stance task. Results The activation of intrinsic foot muscles significantly differed among different SOT tasks (p < 0.001). Post-hoc tests showed that compared with that under normal condition 1 without sensory interference, EMGs increased significantly under sensory disturbance (conditions 2–6). By contrast, compared with that under the single-sensory disturbed conditions (conditions 2–4; 2 for disturbed vision, 3 for disturbed vestibular sensation, 4 for disturbed proprioception), activation was significantly greater under the dual-sensory disturbed postural tasks (conditions 5 and 6; 5 for disturbed vision and proprioception, 6 for disturbed vestibular sensation and proprioception). In MCT, EMGs of foot muscles increased significantly under different translation speeds (p < 0.001). In LOS, moderate and significant correlations were found between muscle activations and postural stability parameters (AbH, r = 0. 355–0.636, p < 0.05; FDB, r = 0.336–0.622, p < 0.05). Conclusion Intrinsic foot muscles play a complementary role to regulate postural stability when disturbances occur. In addition, the recruitment magnitude of intrinsic foot muscles is positively correlated with the limit of stability, indicating their contribution to increasing the limits of stability in the elderly.

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Quantifying the Contributions of the Flexor Digitorum Brevis Muscle on Postural Stability

Cited by 12 publications

References 4 publications

Less Than One Millimeter Under the Great Toe is Enough to Change Balance Ability in Elite Women Handball Players

Less Than One Millimeter Under the Great Toe is Enough to Change Balance Ability in Elite Women Handball Players

Relationship between transverse arch height and foot muscles evaluated by ultrasound imaging device

Difference in the recruitment of intrinsic foot muscles in the elderly under static and dynamic postural conditions

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