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Gråstén, A.; Yli-Piipari, S.; Huhtiniemi, M.; Salin, K.; Seppälä, S.; Lahti, J.; Hakonen, H.; Jaakkola, T. Predicting Accelerometer-Based Physical Activity in Physical Education and Total Physical Activity: The Self-Determination Theory Approach. J. Hum. Sport Exerc. 2019, 14, 757-771.