<strong>Objective</strong><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">: Determine the Test reliability a...<strong>Objective</strong><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">: Determine the Test reliability and the objective validity of the International Physical Activity Questionnaire (IPAQ). </span><b><span style="font-family:Verdana;font-size:12px;">Methods</span></b></span><span style="font-family:Verdana;">:</span><span style="font-family:Verdana;"> IPAQ was evaluated for test-retest reliability within 6</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">-</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">8 days of its first administration. Criterion validity was tested comparing IPAQ data with those from an activity meter (Intelligent Device for Energy Expenditure and Activity, IDEEA). </span><b><span style="font-family:Verdana;font-size:12px;">Results</span></b><span style="font-family:Verdana;font-size:12px;">: The test-retest correlation (n = 71) for items of IPAQ ranged from r = 0.63 to r = 0.74 and w</span></span><span style="font-family:Verdana;">as </span><span style="font-family:Verdana;">r = 0.79 for the total weekly PA in MET*min per week. Average PA (in MET*min/week) measured with the IDEEA meter, decreased from normal (15</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">840), to 14</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">278 in overweight</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">(BMI</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">></span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">25-</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;"><</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">30) and further to 12</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">803 in obese subjects (>30. BMI). The weekly energy expenditure measured by IDEEA correlated significantly (r = 0</span><span style="font-family:Verdana;">.</span><span style="font-family:Verdana;">61,</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">r</span><sup><span style="font-family:Verdana;font-size:12px;">2</span></sup><span style="font-family:Verdana;font-size:12px;"> = 0.38) with the IPAQ data, providing an objective criterion for validity of IPAQ. The mean values of weekly PA estimated from IPAQ (in MET*min/week) differed significantly in the high (15</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">690) vs. the low (11</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">398) activity groups but not between the moderate (12</span><span style="font-family:Verdana;">,</span><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">056) compared to the low PA group. The IPAQ criteria used to categorize subjects as moderately active, erred by including too many low PA subjects. IDEEA measurements in sedentary subjects overestimated their energy expenditure. </span><b><span style="font-family:Verdana;font-size:12px;">Conclusions</span></b><span style="font-family:Verdana;font-size:12px;">: IPAQ can be reliably used to distinguish low and high PA groups and yields relatively low estimates (−</span></span><span style="font-family:Verdana;">18%) of weekly PA in these groups compared to those measured with the activity meter. Stricter criteria are needed to distinguish moderate from low PA groups. Overweight and obese subjects showed significantly lower levels of PA than normal BMI subjects.</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">IDEEA overestimates low levels of PA.</span>展开更多
文摘<strong>Objective</strong><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">: Determine the Test reliability and the objective validity of the International Physical Activity Questionnaire (IPAQ). </span><b><span style="font-family:Verdana;font-size:12px;">Methods</span></b></span><span style="font-family:Verdana;">:</span><span style="font-family:Verdana;"> IPAQ was evaluated for test-retest reliability within 6</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">-</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">8 days of its first administration. Criterion validity was tested comparing IPAQ data with those from an activity meter (Intelligent Device for Energy Expenditure and Activity, IDEEA). </span><b><span style="font-family:Verdana;font-size:12px;">Results</span></b><span style="font-family:Verdana;font-size:12px;">: The test-retest correlation (n = 71) for items of IPAQ ranged from r = 0.63 to r = 0.74 and w</span></span><span style="font-family:Verdana;">as </span><span style="font-family:Verdana;">r = 0.79 for the total weekly PA in MET*min per week. Average PA (in MET*min/week) measured with the IDEEA meter, decreased from normal (15</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">840), to 14</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">278 in overweight</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">(BMI</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">></span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">25-</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;"><</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">30) and further to 12</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">803 in obese subjects (>30. BMI). The weekly energy expenditure measured by IDEEA correlated significantly (r = 0</span><span style="font-family:Verdana;">.</span><span style="font-family:Verdana;">61,</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">r</span><sup><span style="font-family:Verdana;font-size:12px;">2</span></sup><span style="font-family:Verdana;font-size:12px;"> = 0.38) with the IPAQ data, providing an objective criterion for validity of IPAQ. The mean values of weekly PA estimated from IPAQ (in MET*min/week) differed significantly in the high (15</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">690) vs. the low (11</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;">398) activity groups but not between the moderate (12</span><span style="font-family:Verdana;">,</span><span style="font-size:10pt;font-family:;" "=""><span style="font-family:Verdana;font-size:12px;">056) compared to the low PA group. The IPAQ criteria used to categorize subjects as moderately active, erred by including too many low PA subjects. IDEEA measurements in sedentary subjects overestimated their energy expenditure. </span><b><span style="font-family:Verdana;font-size:12px;">Conclusions</span></b><span style="font-family:Verdana;font-size:12px;">: IPAQ can be reliably used to distinguish low and high PA groups and yields relatively low estimates (−</span></span><span style="font-family:Verdana;">18%) of weekly PA in these groups compared to those measured with the activity meter. Stricter criteria are needed to distinguish moderate from low PA groups. Overweight and obese subjects showed significantly lower levels of PA than normal BMI subjects.</span><span style="font-size:10pt;font-family:;" "=""> </span><span style="font-family:Verdana;">IDEEA overestimates low levels of PA.</span>
