Accuracy of runners self identification of foot strike pattern

NewsBot · Jun 9, 2016

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ACCURACY OF SELF-REPORTED FOOT STRIKE PATTERN IN INTERCOLLEGIATE AND RECREATIONAL RUNNERS DURING SHOD RUNNING.
Bade MB, Aaron K, McPoil TG.
Int J Sports Phys Ther. 2016 Jun;11(3):350-355.

BACKGROUND:
Clinicians are interested in the foot strike pattern (FSP) in runners because of the suggested relationship between the strike pattern and lower extremity injury.
PURPOSE:
The purpose of this study was to assess the ability of collegiate cross-country runners and recreational runners to self-report their foot strike pattern during running.
STUDY DESIGN:
Cross-sectional Study.
METHODS:
Twenty-three collegiate cross-country and 23 recreational runners voluntarily consented to participate. Inclusion criteria included running at least 18 miles per week, experience running on a treadmill, no history of lower extremity congenital or traumatic deformity, or acute injury three months prior to the start of the study. All participants completed a pre-test survey to indicate their typical foot strike pattern during a training run (FSPSurvey). Prior to running, reflective markers were placed on the posterior midsole and the vamp of the running shoe. A high-speed camera was used to film each runner in standing and while running at his or her preferred speed on a treadmill. The angle between the vector formed by the two reflective markers and the superior surface of the treadmill was used to calculate the foot strike angle (FSA). To determine the foot strike pattern from the video data (FSPVideo), the static standing angle was subtracted from the FSA at initial contact of the shoe on the treadmill. In addition to descriptive statistics, percent agreement and Chi square analysis was used to determine distribution differences between the video analysis results and the survey.
RESULTS:
The results of the chi-square analysis on the distribution of the FSPSurvey in comparison to the FSPVideo were significantly different for both the XCRunners (p < .01; Chi-square = 8.77) and the REC Runners (p < .0002; Chi-square = 16.70). The cross-country and recreational runners could correctly self-identified their foot strike pattern 56.5% and 43.5% of the time, respectively.
CONCLUSION:
The findings of this study suggest that the clinician cannot depend on an experienced runner to correctly self-identify their FSP. Clinicians interested in knowing the FSP of a runner should consider performing the two-dimensional video analysis described in this paper.
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Craig Payne · Jun 9, 2016

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NewsBot · Dec 14, 2017

How accurate is visual determination of foot strike pattern and pronation assessment
Frédéric Meyer et al
Gait and Posture; in press

Highlights
•Comparison of objective and subjective methods to analyse foot function is proposed.
•Visual assessment of foot strike pattern is highly accurate.
•Visual assessment of pronation is not reliable.
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Nowadays, choosing adequate running shoes is very difficult, due to the high number of different designs. Nevertheless, shoes have two main characteristics to fit runners’ technique and morphology: drop and arch support. Retailers’ advices are usually based on the visual assessment of the customer’s running technique. Such method is subjective and requires an experimented examiner while objective methods require expensive material, such as 3D motion system and pressure insoles. Therefore, the aim of this study was to determine the accuracy of foot strike pattern and pronation assessment using video cameras, compared to a gold standard motion tracking system and pressure insoles. 34 subjects had to run at 8, 12 and 16 Km/h shod and 12 Km/h barefoot during 30 seconds trials on a treadmill. Agreement between foot strike pattern assessment methods was between 88% and 92%. For pronation, agreement on assessment methods was between 42% and 56%. The results obtained indicate a good accuracy on foot strike pattern assessment, and a high difficulty to determine pronation with enough accuracy. There is therefore a need to develop new tools for the assessment of runner’s pronation.
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NewsBot · Apr 21, 2022

Athletes do not know the morphology of their feet
Celso Sánchez Ramírez
European Journal of Human Movement

The foot corresponds to the body segment that allows the exchange of forces between the support surface and the athlete's body; its morphology and function influence the quality of movement and body alignment. Moreover, the foot morphology can be modified according to the different adaptations that different sports cause, such as running, sport combat and team sports.

This work aimed to define the knowledge that a sample of athletes has about their Medial Longitudinal Foot Arch (MLFA), which has been classified as Cavus, Normal and Flat. A sample of 119 athletes, separated into three groups (runners, combat athletes, and team players), were given a self-perception questionnaire of their MLFA. Their responses were contrasted with the Arch Index (AI), which is a reliable objective measurement of the MLFA.

Just 18.5% of the sample were able to identify their MLFA, as 67.2% stated they did not know, and 14.3% erred in their self-diagnosis. Combat athletes had the highest percentage who correctly identified their MLFA (25%). Association was found between the knowledge demonstrated by athletes and the sport they practiced (X2 = 9.926, df = 4, p = 0.04). The ignorance about MLFA by the athletes studied is presented as a problem of which consequences are unknown; this opens future research focused on the study of injuries caused by misalignment of the foot and the need to prescribe sports shoes as orthoses.
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