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Michael J. LaMonte, I-Min Lee, Eileen Rillamas-Sun, John Bellettiere, Kelly R. Evenson, David M. Buchner, Chongzhi Di, Cora E. Lewis, Dori E. Rosenberg, Marcia L. Stefanick and Andrea Z. LaCroix

requiring ≥3 METs (e.g., level walking at 1.5–2.0 mph). Questionnaire Measures We were interested in comparing accelerometer measures with self-reported measures from three widely used questionnaires that have been tested for reliability and validity: the WHI PA questionnaire ( Meyer, Evenson, Morimoto

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Carlos Augusto Kalva-Filho, Argyris Toubekis, Alessandro Moura Zagatto, Adelino Sanchez Ramos da Silva, João Paulo Loures, Eduardo Zapaterra Campos and Marcelo Papoti

minimum test and, consequently, its comparisons with other aerobic parameters (eg, critical velocity) ( 17 ). Although the lactate minimum test has been widely applied in free-swimming ( 5 , 14 , 17 , 26 ), at present, only one study has tested the validity of this procedure in tethered swimming

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Justin W.Y. Lee, Ming-Jing Cai, Patrick S.H. Yung and Kai-Ming Chan

user-friendly, the measurement largely depends on the skills and strength of the operator. 10 , 14 Especially for the hamstring strength endurance measurement, the operator will also fatigue during the trial. 5 For others on-field hamstring strength testing methods, the concurrent validity are yet to

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Kieran J. Marston, Belinda M. Brown, Stephanie R. Rainey-Smith, Sabine Bird, Linda K. Wijaya, Shaun Y. M. Teo, Ralph N. Martins and Jeremiah J. Peiffer

–40 continuous min; Jakicic, Winters, Lang, & Wing, 1999 ). It is, therefore, important to explore the acute response in BDNF, IGF-1, and VEGF using a high-intensity, yet, ecologically valid, resistance exercise regimen in older adults. The purpose of this investigation was to assess the acute response in BDNF

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Rheanna Bulten, Sara King-Dowling and John Cairney

an especially relevant component of fitness in childhood, with evidence that it is inversely associated with cardiovascular disease risk in childhood independent of cardiorespiratory fitness levels ( 21 ). Despite a growing body of work on MF in children, there remains a lack of valid and reliable

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Nick Dobbin, Richard Hunwicks, Ben Jones, Kevin Till, Jamie Highton and Craig Twist

practitioners should think carefully about the selection of a valid, safe, and time-efficient measure of maximal strength. The use of the isometric midthigh pull offers a method of maximal-strength assessment that meets the aforementioned criteria. 11 – 13 The midthigh pull requires participants to stand on a

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Randall J. Bergman, Justin W. Spellman, Michael E. Hall and Shawn M. Bergman

Background:

This study examined the validity of a selected free pedometer application (iPedometer; IP) for the iPhone that could be used to assess physical activity.

Methods:

Twenty college students (10 men, 10 women; mean age: 21.85 ± 1.57 yrs) wore an iPhone at 3 locations (pocket, waist, arm) and a StepWatch 3 Step Activity Monitor (SW) on their right ankle while walking on a treadmill at 5 different speeds (54, 67, 80, 94, 107 m·min−1). A research assistant counted steps with a tally counter (TC).

Results:

Statistical significance between the TC, SW, and IP was found during every condition except IP in the pocket at 107 m·min−1 (F 2,38 = .64, P = .54). Correlations involving the IP revealed only 1 positive correlation (IP on arm at 54 m·min−1) for any of the conditions (r = .46, P = .05).

Conclusion:

The IP application was not accurate in counting steps and recorded significantly lower step counts than the SW and TC. Thus, the free pedometer application used is not a valid instrument for monitoring activity during treadmill walking.

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Isaac Estevan, Javier Molina-García, Gavin Abbott, Steve J. Bowe, Isabel Castillo and Lisa M. Barnett

such questions, it is noted that some societies can be considered as relational (i.e., the group is considered as paramount rather than the individual), while others could be described as individualistic societies ( Cross & Madson, 1997 ). In this line, it is important to investigate the validity of

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Stephen K. Ford and Jeffery J. Summers

The factorial validity of the attentional-style subscales of the Test of Attentional and Interpersonal Style (TAIS) have recently been questioned, although the evidence is only indirect. This study aimed to examine, directly, the factorial validity of these scales and to cross-validate the results. Two samples of 210 first-year psychology students responded to the 52 items comprising the attention-related subscales of the TAIS. A multidimensional confirmatory factor analysis (MCFA) was conducted on the interitem covariance matrix to test the measurement model underlying the six subscales. The MCFA results failed to support the model. Furthermore, internal consistency coefficients and item-total coefficients also supported the view that many of the subscales have insufficient factorial validity. Of the 52 items, 44% correlated better with at least one subscale other than their own, which indicates poor discriminant validity. Analysis of item content reveals some explanation for the poor discriminant validity. All results were cross-validated with the second sample.

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Klaus Hauer, Stephen R. Lord, Ulrich Lindemann, Sarah E. Lamb, Kamiar Aminian and Michael Schwenk

The purpose of this study was to validate a new interview-administered physical activity questionnaire (Assessment of Physical Activity in Frail Older People; APAFOP) in older people with and without cognitive impairment. The authors assessed feasibility, validity, and test–retest reliability in 168 people (n = 78 with, n = 88 without cognitive impairment). Concurrent validity was assessed against an inertia-based motion sensor and an established questionnaire. Sensitivity to change was tested in an ongoing study in patients with mild to moderate dementia (n = 81). Assessment of physical activity by the APAFOP and the motion sensor correlated well in the total sample (TS; p = .705), as well as in the subsamples with cognitive impairment (CI; p = .585) and without CI (p = .787). Excellent feasibility with an acceptance rate of 100%, test–retest reliability (intraclass correlation coefficients ranging from .973 (TS) to .975 (CI) to .966 (no CI), and sensitivity to change (effect sizes: 0.35–1.47) were found in both subsamples.