Heidi Syväoja

Different solutions from Finnish and Danish school systems for increasing school-day physical activity and supporting learning: a top down or bottom-up approach

Tuija Tammelin, Heidi Syväoja, Anna Bugge, 2017 .

Effects of exercise intensity and duration on nocturnal heart rate variability and sleep quality

Heidi Syväoja, Heikki Kyröläinen, Tero Myllymäki, 2011, European Journal of Applied Physiology.