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Aurora de Fátima G.C. Mafra Cabral, Marcelo Medeiros Pinheiro, Charlles H.M. Castro, Marco Túlio De Mello, Sérgio Tufik and Vera Lúcia Szejnfeld

among the objective methods more currently used to measure physical activity ( Kolt, 2013 ). On the other hand, questionnaires have been used to subjectively estimate physical activity, especially due to their convenience and low cost ( Dollman et al., 2009 ). As a limitation, questionnaires may vary

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Minna Aittasalo, Matti Pasanen, Mikael Fogelholm and Katriina Ojala

Purpose:

To examine the validity and repeatability of a short leisure time physical activity (LTPA) questionnaire during pregnancy.

Methods:

Seventy-nine women with uncomplicated pregnancies and weeks’ gestation ≤ 33 participated. After the first questionnaire (LTPAQ1) they entered 7-day LTPA and pedometer counts in a logbook and completed the second LTPA questionnaire (LTPAQ2). Validity was assessed with Spearman’s rank correlation coefficients by comparing LTPAQ2 with pedometer counts and logbook. For describing repeatability, change in the mean, geometric mean ratio, typical error, coefficient of variation (CV, %) and Bland-Altman plots were used.

Results:

Forty-five (57%) and 47 (59%) women were available for pedometer and logbook comparisons and 49 (62%) for repeatability assessment. LTPAQ2 showed no correlation with pedometer but moderate correlation with the logbook for the frequency of moderate to vigorous-intensity LTPA (rs = 0.68, 95% CI 0.48 to 0.81). In repeatability, the typical error for frequency estimates varied from 1.2 to 3.7 sessions and CV for duration from 119 to 369%. The corresponding values for systematic error were -1.0 to 0.3 sessions and 4 to 36%. The 95% limits of agreement for single variables were large.

Conclusions:

The questionnaire was valid for assessing moderate to vigorous-intensity LTPA but its individual repeatability proved weak.

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Esra Uzelpasaci, Türkan Akbayrak, Serap Özgül, Ceren Orhan, Emine Baran, Gülbala Nakip, Sinan Beksac and Semra Topuz

. The measurement of physical activity is usually performed by subjective methods such as questionnaire and exercise diary or by objective methods such as accelerometer or pedometer. 7 – 9 However, objective measuring devices are relatively costly, and these devices are insufficient to measure

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Maria Heikkilä, Raisa Valve, Mikko Lehtovirta and Mikael Fogelholm

nutrition knowledge among athletes and coaches ( Heaney et al., 2011 ; Spronk et al., 2014 ; Trakman et al., 2016 ). Nutrition knowledge should be evaluated using validated instruments designed for the target population ( Parmenter & Wardle, 2000 ). An inadequately validated questionnaire with a narrow

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Boris Dugonjić, Saša Krstulović and Goran Kuvačić

(all males) from eight European countries. This investigation was conducted during World Association of Kickboxing Organizations Senior European Kickboxing Championships 2018 held in Bratislava where athletes were recruited to answer a questionnaire regarding prevalence, magnitude, and methods of RWL

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Martin C. Waller, Deborah A. Kerr, Martyn J. Binnie, Emily Eaton, Clare Wood, Terreen Stenvers, Daniel F. Gucciardi, Carmel Goodman and Kagan J. Ducker

)  Winter sports 1 (1) 1 (100) 0 (0)  Weightlifting 1 (1) 1 (100) 0 (0)  Triathlon 1 (1) 1 (100) 0 (0)  Trampoline 1 (1) 1 (100) 0 (0)  Cycling—BMX 1 (1) 1 (100) 0 (0)  Boxing 1 (1) 1 (100) 0 (0) Sport category, n (%)  Team 52 (55) 46 (89) 6 (11)  Individual 42 (45) 36 (86) 6 (14) Questionnaire Athletes

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Robert J. Brychta, Vaka Rögnvaldsdóttir, Sigríður L. Guðmundsdóttir, Rúna Stefánsdóttir, Soffia M. Hrafnkelsdóttir, Sunna Gestsdóttir, Sigurbjörn A. Arngrímsson, Kong Y. Chen and Erlingur Jóhannsson

self-report by questionnaire and actigraphy in adolescents ( Arora et al., 2013 ; Biddle, Robillard, Hermens, Hickie, & Glozier, 2015 ; Guedes et al., 2016 ; Wolfson et al., 2003 ), but it is unclear whether the two methods have comparable sensitivity to measure longitudinal change in sleep patterns

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Dennis Dreiskaemper, Till Utesch and Maike Tietjens

questionnaires measuring the physical self-concept in adolescents have been published (Physical Self-Description Questionnaire: Marsh & Redmayne, 1994 ; Marsh, Richards, Johnson, Roche, & Tremayne, 1994 ; Stiller, Würth, & Alfermann, 2004 ; Physical Self-Description Questionnaire–Short Version: Marsh, Martin

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Nicolas Farina, Laura J. Hughes, Amber Watts and Ruth G. Lowry

Measuring physical activity is complicated, with trade-offs between the different types of available measures in terms of accuracy, acceptability, and feasibility ( Prince et al., 2008 ; Sylvia, Bernstein, Hubbard, Keating, & Anderson, 2014 ). Physical activity questionnaires have a distinct place

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Robin S. Vealey, Robin Cooley, Emma Nilsson, Carly Block and Nick Galli

) contextual characteristics (coach, organization, type of sport, family, time in season), and (c) consultant characteristics (training, competencies, style) ( Vealey & Garner-Holman, 1998 ). Although methods of assessment in sport psychology include questionnaires/inventories, interviews/discussion, observation, and