身體活動自我報告量表之效度及信度的研究－－以Polar Vantage NV心搏率監測器為效標

A study on validity and reliability of self-report measures of physical activity--Using Polar Vantage NV Heart Rate Monitor as criterion

本研究以國內大學生50名經簽署同意書之自願者為對象，旨在探討兩種問卷測量工具，一為身體活動三日記錄法日誌 (3-d Physical Activity Log (3-d PAL))、另一為七日訪談回憶法問卷(7-d Physical Activity Recall (7-d PAR)之信度與效度。研究對象於研究期間佩帶心搏率監測器(Polar Vantage NV Heart Rate Monitor(HRM)，連續監測一週，以瞭解其身體活動之變化狀況，並以此為效標(criterion)，分別探討3-d PAL及7-d PAR之效度，信度係以兩週後再測信度為之。研究結果發現，3-d PAL之效度為Spearman's rho= .495(p< .001)、7-d PAR之效度為Spearman's rho= .378 (p< .001)；3-d PAL之兩週後再測信度為Spearman's rho=.881(p< .001)、7-d PAR之兩週後再測信度為Spearman's rho= .912 (p< .001)。另者，HRM於訓練運動選手時，雖為一良好的監測工具及效標，但本研究發現其易受研究對象之情緒及儀器間相互干擾（如研究對象近距離插身而過之相互干擾）等之影響，導致影響身體活動量估計之偏誤。用於非運動選手之身體活動監測時，應考慮上述之限制條件。

The purpose of this study was to examine the reliability and validity of the 7-d interview-administered physical activity recall (7-d PAR) and 3-d physical activity record (3-d PAL). 50 male college students were recruited to participate this study by signing informed consent agreement. Polar Vantage NV heart rate monitor (HRM) was used as criterion and 2-weeks later test-retest reliability also were examined. The results revealed that the validity of 3-d PAR was Spearman's rho= .495 (p< .001) whereas the 7-d PAR was .378 (p< .001). With regard to test-retest reliability, 3-d PAR was Pearson r= .881 (p< .001) whereas the 7-d PAR was .912 (p< .001). HRM may be good for sports training but have some limitations for long-term using in field study. Because it was easily affected by the moods and interfered by electromagnetic field etc.