@inproceedings{RectorOttawaWangetal.2014, author = {Rector, Michael V. and Ottawa, Fabian and Wang, Victor and Wippert, Pia-Maria}, title = {Test-retest reliability of hair cortisol concentration and correlations with physical activity levels in non-athletes}, series = {Medicine and science in sports and exercise : official journal of the American College of Sports Medicine}, volume = {46}, booktitle = {Medicine and science in sports and exercise : official journal of the American College of Sports Medicine}, number = {5}, publisher = {Lippincott Williams \& Wilkins}, address = {Philadelphia}, issn = {0195-9131}, pages = {222 -- 222}, year = {2014}, language = {en} } @article{WangXieTiberiusetal.2023, author = {Wang, Nan and Xie, Wenxuan and Tiberius, Victor and Qiu, Yong}, title = {Accelerating new product diffusion}, series = {Journal of retailing and consumer services}, volume = {72}, journal = {Journal of retailing and consumer services}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0969-6989}, doi = {10.1016/j.jretconser.2023.103297}, year = {2023}, abstract = {In social networks or, more specifically, online communities on tech-products, opinion leaders are important sources of advice for other consumers in the adoption and diffusion of new products. However, possibilities for potential users to exert their influence on opinion leadership are ignored. This study determines whether and how lead users may serve as opinion leaders in social networks and advise other consumers in the adoption and diffusion of new products. Our survey with 308 users in the Xiaomi and Huawei communities suggests that higher lead userness is positively and significantly associated with the likelihood of opinion giving and passing. Product-possessing innovativeness has a higher impact compared with information-possessing innovativeness. Product involvement does not enhance the effect of information-possessing innovativeness. The findings provide a better understanding of the formation of opinion leadership in social networks for an accelerated diffusion of new products.}, language = {en} } @article{WangTiberiusChenetal.2021, author = {Wang, Nan and Tiberius, Victor and Chen, Xiangxiang and Brem, Alexander and Yu, Fei}, title = {Idea selection and adoption by users}, series = {Technology analysis \& strategic management}, volume = {33}, journal = {Technology analysis \& strategic management}, number = {9}, publisher = {Taylor \& Francis Group}, address = {London}, issn = {0953-7325}, doi = {10.1080/09537325.2020.1863055}, pages = {1036 -- 1051}, year = {2021}, abstract = {Firms increasingly use ideas from online innovation communities to solve problems or to better address customer needs. However, in many cases the number of submitted ideas has exploded, it leads to an information overload that firms hardly can handle considering their limited cognitive resources. Therefore, we use the Elaboration Likelihood Model to distinguish between the quick and lean idea preselection process as a peripheral route of information processing and the subsequent idea review process as a central route of information processing. In our empirical study with a sample of more than 163,000 ideas collected from the Xiaomi MIUI community, we analyse influencing factors that increase the likelihood of ideas being preselected or reviewed. Results show that user status, user initiative contribution, and community recognition have a significantly positive influence on idea preselction, whereas user response contribution has no influence. Idea presentation characteristics have an inverted U-curve relationship with idea adoption. Community absorptive capacity has a moderate effect on the curvilinear relationship between idea description length and idea adoption.}, language = {en} } @phdthesis{Wang2016, author = {Wang, Victor-C.}, title = {Injury and illness risk factors for elite athletes in training environment}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-100925}, school = {Universit{\"a}t Potsdam}, pages = {viii, 84, ix}, year = {2016}, abstract = {Since 1998, elite athletes' sport injuries have been monitored in single sport event, which leads to the development of first comprehensive injury surveillance system in multi-sport Olympic Games in 2008. However, injury and illness occurred in training phases have not been systematically studied due to its multi-facets, potentially interactive risk related factors. The present thesis aim to address issues of feasibility of establishing a validated measure for injury/illness, training environment and psychosocial risk factors by creating the evaluation tool namely risk of injury questionnaire (Risk-IQ) for elite athletes, which based on IOC consensus statement 2009 recommended content of preparticipation evaluation(PPE) and periodic health exam (PHE). A total of 335 top level athletes and a total of 88 medical care providers from Germany and Taiwan participated in tow "cross-sectional plus longitudinal" Risk-IQ and MCPQ surveys respectively. Four categories of injury/illness related risk factors questions were asked in Risk-IQ for athletes while injury risk and psychological related questions were asked in MCPQ for MCP cohorts. Answers were quantified scales wise/subscales wise before analyzed with other factors/scales. In addition, adapted variables such as sport format were introduced for difference task of analysis. Validated with 2-wyas translation and test-retest reliabilities, the Risk-IQ was proved to be in good standard which were further confirmed by analyzed results from official surveys in both Germany and Taiwan. The result of Risk-IQ revealed that elite athletes' accumulated total injuries, in general, were multi-factor dependent; influencing factors including but not limited to background experiences, medical history, PHE and PPE medical resources as well as stress from life events. Injuries of different body parts were sport format and location specific. Additionally, medical support of PPE and PHE indicated significant difference between German and Taiwan. The result of the present thesis confirmed that it is feasible to construct a comprehensive evalua-tion instrument for heterogeneous elite athletes cohorts' risk factor analysis for injury/illness oc-curred during their non-competition periods. In average and with many moderators involved, Ger-man elite athletes have superior medical care support yet suffered more severe injuries than Tai-wanese counterparts. Opinions of injury related psychological issues reflected differently on vari-ous MCP groups irrespective of different nationalities. In general, influencing factors and interac-tions existed among relevant factors in both studies which implied further investigation with multiple regression analysis is needed for better understanding.}, language = {en} } @inproceedings{WangMayerDorenkampetal.2012, author = {Wang, Victor C. and Mayer, Frank and Dorenkamp, Marc and Bonaventura, Klaus}, title = {Three-dimensional global area tracking is a valuable quantitative parameter for left ventricular function in athletes}, series = {Medicine and science in sports and exercise : official journal of the American College of Sports Medicine}, volume = {44}, booktitle = {Medicine and science in sports and exercise : official journal of the American College of Sports Medicine}, publisher = {Lippincott Williams \& Wilkins}, address = {Philadelphia}, issn = {0195-9131}, pages = {850 -- 850}, year = {2012}, language = {en} }