@article{AntoniewiczBrand2016,
  author    = {Antoniewicz, Franziska and Brand, Ralf},
  title     = {Dropping Out or Keeping Up?},
  series = {Frontiers in psychology},
  volume    = {7},
  journal   = {Frontiers in psychology},
  publisher = {Frontiers Research Foundation},
  address   = {Lausanne},
  issn      = {1664-1078},
  doi       = {10.3389/fpsyg.2016.00838},
  pages     = {8},
  year      = {2016},
  abstract  = {The aim of this study was to examine how automatic evaluations of exercising (AEE) varied according to adherence to an exercise program. Eighty-eight participants (24.98 years ± 6.88; 51.1\% female) completed a Brief-Implicit Association Task assessing their AEE, positive and negative associations to exercising at the beginning of a 3-month exercise program. Attendance data were collected for all participants and used in a cluster analysis of adherence patterns. Three different adherence patterns (52 maintainers, 16 early dropouts, 20 late dropouts; 40.91\% overall dropouts) were detected using cluster analyses. Participants from these three clusters differed significantly with regard to their positive and negative associations to exercising before the first course meeting (η2p = 0.07). Discriminant function analyses revealed that positive associations to exercising was a particularly good discriminating factor. This is the first study to provide evidence of the differential impact of positive and negative associations on exercise behavior over the medium term. The findings contribute to theoretical understanding of evaluative processes from a dual-process perspective and may provide a basis for targeted interventions.},
  language  = {en}
}
@misc{AntoniewiczBrand2016,
  author    = {Antoniewicz, Franziska and Brand, Ralf},
  title     = {Dropping Out or Keeping Up?},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-97060},
  pages     = {8},
  year      = {2016},
  abstract  = {The aim of this study was to examine how automatic evaluations of exercising (AEE) varied according to adherence to an exercise program. Eighty-eight participants (24.98 years ± 6.88; 51.1\% female) completed a Brief-Implicit Association Task assessing their AEE, positive and negative associations to exercising at the beginning of a 3-month exercise program. Attendance data were collected for all participants and used in a cluster analysis of adherence patterns. Three different adherence patterns (52 maintainers, 16 early dropouts, 20 late dropouts; 40.91\% overall dropouts) were detected using cluster analyses. Participants from these three clusters differed significantly with regard to their positive and negative associations to exercising before the first course meeting (η2p = 0.07). Discriminant function analyses revealed that positive associations to exercising was a particularly good discriminating factor. This is the first study to provide evidence of the differential impact of positive and negative associations on exercise behavior over the medium term. The findings contribute to theoretical understanding of evaluative processes from a dual-process perspective and may provide a basis for targeted interventions.},
  language  = {en}
}
@article{BrandCheval2019,
  author    = {Brand, Ralf and Cheval, Boris},
  title     = {Theories to explain exercise motivation and physical inactivity},
  series = {Frontiers in psychology},
  volume    = {10},
  journal   = {Frontiers in psychology},
  publisher = {Frontiers Research Foundation},
  address   = {Lausanne},
  issn      = {1664-1078},
  doi       = {10.3389/fpsyg.2019.01147},
  pages     = {4},
  year      = {2019},
  language  = {en}
}
@article{DuncanHayesWiebkingetal.2015,
  author    = {Duncan, Niall W. and Hayes, Dave J. and Wiebking, Christine and Tiret, Brice and Pietruska, Karin and Chen, David Q. and Rainville, Pierre and Marjanska, Malgorzata and Ayad, Omar and Doyon, Julien and Hodaie, Mojgan and Northoff, Georg},
  title     = {Negative childhood experiences alter a prefrontal-insular-motor cortical network in healthy adults: A preliminary multimodal rsfMRI-fMRI-MRS-dMRI study},
  series = {Human brain mapping : a journal devoted to functional neuroanatomy and neuroimaging},
  volume    = {36},
  journal   = {Human brain mapping : a journal devoted to functional neuroanatomy and neuroimaging},
  number    = {11},
  publisher = {Wiley-Blackwell},
  address   = {Hoboken},
  issn      = {1065-9471},
  doi       = {10.1002/hbm.22941},
  pages     = {4622 -- 4637},
  year      = {2015},
  abstract  = {Research in humans and animals has shown that negative childhood experiences (NCE) can have long-term effects on the structure and function of the brain. Alterations have been noted in grey and white matter, in the brain's resting state, on the glutamatergic system, and on neural and behavioural responses to aversive stimuli. These effects can be linked to psychiatric disorder such as depression and anxiety disorders that are influenced by excessive exposure to early life stressors. The aim of the current study was to investigate the effect of NCEs on these systems. Resting state functional MRI (rsfMRI), aversion task fMRI, glutamate magnetic resonance spectroscopy (MRS), and diffusion magnetic resonance imaging (dMRI) were combined with the Childhood Trauma Questionnaire (CTQ) in healthy subjects to examine the impact of NCEs on the brain. Low CTQ scores, a measure of NCEs, were related to higher resting state glutamate levels and higher resting state entropy in the medial prefrontal cortex (mPFC). CTQ scores, mPFC glutamate and entropy, correlated with neural BOLD responses to the anticipation of aversive stimuli in regions throughout the aversion-related network, with strong correlations between all measures in the motor cortex and left insula. Structural connectivity strength, measured using mean fractional anisotropy, between the mPFC and left insula correlated to aversion-related signal changes in the motor cortex. These findings highlight the impact of NCEs on multiple inter-related brain systems. In particular, they highlight the role of a prefrontal-insular-motor cortical network in the processing and responsivity to aversive stimuli and its potential adaptability by NCEs. Hum Brain Mapp 36:4622-4637, 2015. (c) 2015 Wiley Periodicals, Inc.},
  language  = {en}
}
@misc{JekaucBrand2017,
  author    = {Jekauc, Darko and Brand, Ralf},
  title     = {Editorial: How do Emotions and Feelings Regulate Physical Activity?},
  series = {Frontiers in psychology},
  volume    = {8},
  journal   = {Frontiers in psychology},
  publisher = {Frontiers Research Foundation},
  address   = {Lausanne},
  issn      = {1664-1078},
  doi       = {10.3389/fpsyg.2017.01145},
  pages     = {3},
  year      = {2017},
  language  = {en}
}