Nigg, Claudio R., Claudia Kubica, and Sascha Ketelhut. 2023. “Validation of a Brief German Physical Activity Questionnaire (German-PAQ): Biometric, Physiological, Strength, and Psychological Considerations”. Current Issues in Sport Science (CISS) 8 (2):068. https://doi.org/10.36950/2023.2ciss068.