TY  - JOUR
A1  - Kahlert, Daniela
A1  - Brand, Ralf
T1  - Questionnaires for assessing physical activity different response scale categories influence responses concerning health- and sport-related cognitions
JF  - Zeitschrift für Gesundheitspsychologie
N2  - The present study examines whether the use of different frequency scales in questionnaires about physical activity influences respondents' own estimation of their activity, as well as subsequent measurements of health- und sport-related cognitions and evaluations. Using a randomized research design we recruited a sample of 118 participants. One group received a high frequency scale for assessing their exercise frequency with the response categories "never", "less often", "once a month", "once a week", or "most days." The other group answered with a medium frequency scale with the alternatives "never", "less often", " once every few months", "once a month", and " once a week or more often." As dependent variables all participants judged the subjective importance of physical activity and their health-related quality of life (WHO-QOL-bref). Results indicate the expected response errors, owing to the fact that using a high-frequency scale produces higher levels of self-reported physical activity (Cramer's V = .30). Corresponding to this the subjective importance of physical activity increased (d = .37) and the health-related quality of life was judged to be better (d = .36). Such artefacts might be eliminated by using standardized formulations such as "I exercise... times per week/month for... minutes."
KW  - physical activity
KW  - measurement
KW  - health-related cognition
KW  - response error
Y1  - 2011
U6  - https://doi.org/10.1026/0943-8149/a000044
SN  - 0943-8149
VL  - 19
IS  - 2
SP  - 96
EP  - 100
PB  - Hogrefe
CY  - Göttingen
ER  - 
TY  - JOUR
A1  - Schweizer, Geoffrey
A1  - Plessner, Henning
A1  - Kahlert, Daniela
A1  - Brand, Ralf
T1  - A Video-Based training method for improving soccer referees' intuitive decision-making skills
JF  - Journal of applied sport psychology
N2  - We present a video-based online training-tool (SET, for Schiedsrichter-Entscheidungs-Training, in German) for improving soccer referees' decisions. We assume that referees' decision-making in contact situations mainly relies on intuitive processing. For improving intuitive decisions, feedback on the correctness of decisions is essential; explanations are not required (Hogarth, 2008). Referees participating in SET watch videos, make decisions, and receive feedback. Evidence of the training's effectiveness was obtained in two experiments with soccer players and expert referees. Immediate feedback on the correctness of decisions without further explanations was sufficient for increasing decision accuracy. Results illustrate that SET is a promising tool for complementing referees' training.
Y1  - 2011
U6  - https://doi.org/10.1080/10413200.2011.555346
SN  - 1041-3200
VL  - 23
IS  - 4
SP  - 429
EP  - 442
PB  - Routledge, Taylor & Francis Group
CY  - Abingdon
ER  - 
TY  - CHAP
A1  - Gruber, W.
A1  - Braumann, K. M.
A1  - Kahlert, Daniela
A1  - Brand, Ralf
A1  - Schwarz, C.
A1  - Staab, D.
T1  - Do interavenous antibiotic therapies increase level of physical activity in CF?
T2  - Pediatric pulmonology
Y1  - 2011
SN  - 8755-6863
IS  - 3
SP  - 355
EP  - 355
PB  - Wiley-Blackwell
CY  - Malden
ER  - 
TY  - JOUR
A1  - Jekauc, Darko
A1  - Wagner, Matthias O.
A1  - Kahlert, Daniela
A1  - Woll, Alexander
T1  - Reliability and validity of MoMo-Physical-Activity-Questionnaire for Adolescents (MoMo-AFB)
JF  - Diagnostica
N2  - This paper presents the psychometric properties of the MoMo-AFB (Bos, Worth, Opper, Oberger & Woll, 2009), a questionnaire designed to measure the physical activity of children and adolescents. The MoMo-AFB consists of 28 items, covering the fields of everyday physical activity, sports within and outside of organised clubs, physical education as well as compliance with physical activity guidelines. A study was conducted with 109 boys and 87 girls aged between 9 and 17 years. The MoMo-AFB was given on two separate occasions to evaluate reliability and was compared with accelerometry data of ActiGraph GT1X to evaluate validity. The overall kappa/weighted kappa coefficient for the one-week testretest reliability was .66 (SD = .19) and the overall intraclass correlation (ICC) .68. Self-reported and accelerometer-measured average weekly time spent performing moderate to vigorous physical activity were significantly correlated (Spearman r = .29). Regarding reliability and validity, the MoMo-AFB is comparable with other international published physical activity questionnaires for adolescents.
KW  - physical activity
KW  - physical activity questionnaire
KW  - MoMo-AFB
KW  - adolescents
Y1  - 2013
U6  - https://doi.org/10.1026/0012-1924/a000083
SN  - 0012-1924
VL  - 59
IS  - 2
SP  - 100
EP  - 111
PB  - Hogrefe
CY  - Göttingen
ER  -