Testing a physical education-delivered autonomy supportive intervention to promote leisure-time physical activity in lower secondary school students: the PETALS trial.
Jekaterina SchneiderJuho PoletMary HassandraTaru LintunenArto LaukkanenNelli HankonenMirja HirvensaloTuija H TammelinTimo TörmäkangasMartin S HaggerPublished in: BMC public health (2020)
ISRCTN, ISRCTN39374060 . Registered 19 July 2018. Prospectively registered.