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Abstract Details

Abstract Title

Effectiveness of intrinsic muscles of the foot strengthening in the mobility of the medial longitudinal arch: a systematic review

Abstract Theme

Rehabilitation

Type Presentation

Poster

Abstract Authors

Presenter Isabela Buck - Federal University of Sao Paulo (Human Movement Department) - BR
Thiago Malheiros - Federal University of Sao Paulo (Human Movement Department) - BR
Nara Rejane Cruz - Federal University of Sao Paulo (Human Movement Science) - BR
Liu Chiao Yi - Federal University of Sao Paulo (Human Movement Science) - BR

Presentation Details

Poster Exhibition Site (Local): Orange - 13        Date: 3 September        Time: 8am to 7pm        Presenter: Liu Yi

Abstract Resume

Background:
Foot intrinsic muscles (IMF) weakness may influence the mobility of the medial longitudinal arch (MLA), beyond the functionality of the entire lower limb kinetic chain during sports activities [1].
There is no consensus in the literature about the IMF strengthening, regarding training volume, treatment time and benefits of the Short foot exercise (SFE) [2]. The aim of the study was to conduct a
systematic review of the IMF strengthening on MLA mobility.

Methods:
The research was led by two independent reviewers. Literature search was made using the following databases: PubMed, LILCAS, and SciELO. Were used the following words for the searching: medial
longitudinal arch, intrinsic foot muscle, training, short foot exercise. The period covered was from June 2015 to January 2016, including studies from 2010 to 2015. The revision is in accordance with
PRISMA guidelines.

Results:
Forty-three studies were found. Among them, six were randomized controlled trials and two cross-sectional studies. Twenty-five were read entirely, and eight were selected and included. All studies
demonstrated that IMF strengthening improves mobility on MLA, having better results than Navicular drop and Height arch index in the static posture. In three researches the strength improved dynamic
balance significantly. Two studies shown that SFE got a better IMF activation range when compared to Toe towel curls exercise. One study showed that the intervention group was better at functional
test of running and jumping. The intervention period ranged from two to 12 weeks. The majority concentrated between four and eight weeks, and the frequency depends of the intervention period.
Regarding training volume most studies indicate to hold the muscle contraction for five seconds, except one article that didnĀ“t described the exercise range. Two of them performed the exercises daily,
and only one article had load application. The exercise evolution varied according to the volunteer performance or was previously stipulated.

Conclusions:
The evidences show that SFE as the best to strengthen the MIP, allowing to volunteer better performance in functional activities and dynamic balance of the lower limb, even greater mobility on ALM.
Currently there is no clear evidence of training volume and intervention time.

References
[1] HASHIMOTO, T. e SAKURABA, K. Strength training for the intrinsic flexor muscles of the foot: effects on muscle strength, the foot arch, and dynamic parameters before and after the training. J.
Phys. Ther. Sci. 2014. 26: 373-376.
 [2] McKEON, P.O. et. al. The foot core system: a new paradigm for understanding intrinsic foot muscle function. Br. J. Sports Med. 2015, 26 feb. 290 (49): 1-10.

Acknowledgements
The authors thank the Coordination of Improvement of Higher Level Staff (CAPES) for the financial support.

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