Nigg, Claudio R., Claudia Kubica, and Sascha Ketelhut. “Validation of a Brief German Physical Activity Questionnaire (German-PAQ): Biometric, Physiological, Strength, and Psychological Considerations”. Current Issues in Sport Science (CISS) 8, no. 2 (February 15, 2023): 068. Accessed December 19, 2024. https://ciss-journal.org/article/view/9355.