新式簡易足弓測量系統之信效度考驗

Evaluating the Reliability and Validity of a New and Convcnient Arch Measurement System

石翔至(Hsiang-Chih Shih) ； 謝仕福(Shih-Fu Hsieh) ； 林冠綸(Guan-Lun Lin) ； 相子元(Tzyy-Yuang Shiang)

《體育學報》 44卷3期 (2011/09) Pp. 381-391

https://doi.org/10.6222/pej.4403.201109.1105

摘要

Purpose: The height of the medial longitudinal arch is one of the most important factors to describe foot structure. In particular, people with flat foot and high arch foot have higher injury rate. Footprint is a convenient way to determine foot structure. Current footprint measurement devices use electronic sensor or ink to obtain the footprint which either the analysis process is too complex or the ink is not environmental friendly. Therefore, a new footprint measurement device was developed to determine foot structure without using ink. In order to confirm the accuracy and reliability of this new device, this study tried to determine the correlation between different footprint measurement devices. Methods: 78 footprints were collected from the 39 subjects (7 males, 32 females). The mean age was 22.3±1.8 years, mean height was 162.1±8.1 cm, and mean weight was 56.5±11.6 kg. Subjects were measured two times on each foot by both the new device and traditional ink footprint device. Then the footprint images were scanned into the computer using Sigmascan Pro 5 software to analyze arch index and arch angle. Data were expressed as Mean SD, all statistical analyses were conducted using SPSS The Pearson's correlation coefficient was used to determine the correlation between two measurement devices. Statistical significant level was set at α=.01. Results: The correlation coefficients between new footprint and traditional ink footprint devices were 0.830 (p＜.01) for arch index, 0.628 (p＜.01) for arch angle. Previous studies reported high reliability for using footprint parameters to predict arch height. Therefore, the footprint parameter obtained from this new measurement device can be used to predict arch height and other foot structure parameters. Conclusion: New approach to measure footprint has significant correlation with the traditional ink footprint device. This result shows promising future in clinical applications to use this new footprint device which is more convenient and environmentally-friendly and easier to measure than the traditional ink footprint device. In order to provide more evidence to support this new device, more subjects and direct measurement of arch height should be analyzed in future study.

關鍵字

足印參數 ； 足弓高度 ； 足弓指標 ； 足弓角度

並列摘要

Purpose: The height of the medial longitudinal arch is one of the most important factors to describe foot structure. In particular, people with flat foot and high arch foot have higher injury rate. Footprint is a convenient way to determine foot structure. Current footprint measurement devices use electronic sensor or ink to obtain the footprint which either the analysis process is too complex or the ink is not environmental friendly. Therefore, a new footprint measurement device was developed to determine foot structure without using ink. In order to confirm the accuracy and reliability of this new device, this study tried to determine the correlation between different footprint measurement devices. Methods: 78 footprints were collected from the 39 subjects (7 males, 32 females). The mean age was 22.3±1.8 years, mean height was 162.1±8.1 cm, and mean weight was 56.5±11.6 kg. Subjects were measured two times on each foot by both the new device and traditional ink footprint device. Then the footprint images were scanned into the computer using Sigmascan Pro 5 software to analyze arch index and arch angle. Data were expressed as Mean SD, all statistical analyses were conducted using SPSS The Pearson's correlation coefficient was used to determine the correlation between two measurement devices. Statistical significant level was set at α=.01. Results: The correlation coefficients between new footprint and traditional ink footprint devices were 0.830 (p＜.01) for arch index, 0.628 (p＜.01) for arch angle. Previous studies reported high reliability for using footprint parameters to predict arch height. Therefore, the footprint parameter obtained from this new measurement device can be used to predict arch height and other foot structure parameters. Conclusion: New approach to measure footprint has significant correlation with the traditional ink footprint device. This result shows promising future in clinical applications to use this new footprint device which is more convenient and environmentally-friendly and easier to measure than the traditional ink footprint device. In order to provide more evidence to support this new device, more subjects and direct measurement of arch height should be analyzed in future study.

並列關鍵字

footprint parameters ； arch height ； arch index ； arch angle

參考文獻

蔣至傑、王博民、駱榮欽、陳俊忠(2005)。足弓形態與下肢傷害之相關性。北體學報。13，179-187。

Clarke, H. H. (1933). An objective method of measuring the height of the longitudinal arch in foot examination. Research Quarterly, 4, 99-107.

Irwin, L. W. (1937). A study of the tendency of school children to develop flat-footedness. Research Quarterly, 8, 46-53.

Schwatz, L., Britten, R. H., & Thompson, L. R. (1928). Studies in physical development and posture. (Report No. 179). U. S. Public Health Bulletin. Washington, DC: U. S.Government.

Cavanagh,P.R.,Rodgers,M.M.(1987).The arch index: A useful measure from footprint.Journal of Biomechanics.20(5),547-551.