Taru Garthwaite
PhD in Clinical Physiology and Nuclear Medicine
Sports and exercise medicine; clinical physiology; energy metabolism; physical activity and sedentary behavior; PET imaging
Human Emotion Systems Laboratory
My research has focused on the effects of physical activity behaviors and lifestyle changes on physiological health and energy metabolism.
Currently, I am investigating with novel total-body PET imaging how physiological changes in the body connect with simultaneous brain activity and emotions, and what this means for physical and mental health - with a focus on understanding the biology behind anxiety.
- Changes in hemoglobin levels and cardiometabolic health in adults with metabolic syndrome – a secondary outcome analysis of a six-month randomized controlled trial (2026) Gassner, Jasmina; Norha, Jooa; Sjöros, Tanja; Garthwaite, Taru; Koivula, Tiia; Laine, Saara; Koivumäki, Mikko; Vähä-Ypyä, Henri; Kallio, Petri; Saarenhovi, Maria; Löyttyniemi, Eliisa; Sievänen, Harri; Houttu, Noora; Laitinen, Kirsi; Kalliokoski, Kari K.; Vasankari, Tommi; Koivunen, Peppi; Knuuti, Juhani; Heinonen, Ilkka
- Effects of reducing sedentary behavior on liver insulin sensitivity, liver fat content, and liver enzyme levels : a six-month randomized controlled trial (2025)
- American Journal of Physiology : Endocrinology and Metabolism
Laine, Saara; Sjöros, Tanja; Garthwaite, Taru; Honka, Miikka-Juhani; Löyttyniemi, Eliisa; Norha, Jooa; Eskola, Olli; Koivumäki, Mikko; Vähä-Ypyä, Henri; Sievänen, Harri; Vasankari, Tommi; Hirvonen, Jussi; Laitinen, Kirsi; Houttu, Noora; Kalliokoski, Kari K.; Saunavaara, Virva; Knuuti, Juhani; Heinonen, Ilkka H. A.
- Effects of Reducing Sedentary Behaviour on Cardiac Structure and Function at Rest and During Exercise: A 6-Month Randomized Controlled Trial (2025) Norha, Jooa; Saarenhovi, Maria; Kallio, Petri; Sjöros, Tanja; Garthwaite, Taru; Laine, Saara; Houttu, Noora; Laitinen, Kirsi; Vähä-Ypyä, Henri; Sievänen, Harri; Löyttyniemi, Eliisa; Vasankari, Tommi; Knuuti, Juhani; Kalliokoski, Kari K.; Heinonen, Ilkka H. A.
- Effects of reducing sedentary behaviour on renal glucose uptake during insulin stimulation: A post‐hoc analysis of a 6‐month randomized controlled trial (2025)
- Diabetes, Obesity and Metabolism
Rebelos, Eleni; Dadson, Prince; Sjöros, Tanja; Laine, Saara; Norha, Jooa; Garthwaite, Taru; Löyttyniemi, Eliisa; Eskola, Olli; Koivumäki, Mikko; Vähä‐Ypyä, Henri; Sievänen, Harri; Vasankari, Tommi; Hirvonen, Jussi; Laitinen, Kirsi; Houttu, Noora; Kalliokoski, Kari K.; Knuuti, Juhani; Ferrannini, Ele; Mari, Andrea; Heinonen, Ilkka
- Mildly elevated liver lipid content is characterised by reduced insulin sensitivity (2025) Tuomola, Nelli; Rebelos, Eleni; Latva-Rasku, Aino; Bucci, Marco; Immonen, Heidi; Saunavaara, Virva; Laine, Saara; Sjöros, Tanja; Garthwaite, Taru; Raiko, Juho R.H.; Fernandes Silva, Lilian; Virtanen, Kirsi A.; Hannukainen, Jarna C.; Ala-Korpela, Mika; Kalliokoski, Kari K.; Heinonen, Ilkka H.A.; Nuutila, Pirjo; Honka, Miikka-Juhani
- Secondary analysis of a randomised controlled trial on reducing sedentary behaviour and its effects on quality of life and wellbeing (2025) Norha, Jooa; Sjöros, Tanja; Garthwaite, Taru; Laine, Saara; Laitinen, Kirsi; Houttu, Noora; Vähä-Ypyä, Henri; Sievänen, Harri; Löyttyniemi, Eliisa; Vasankari, Tommi; Knuuti, Juhani; Kalliokoski, Kari K.; Heinonen, Ilkka H. A.
- Successfully Reducing Sitting Time Can Improve Metabolic Flexibility (2025)
- Scandinavian Journal of Medicine and Science in Sports
Garthwaite, Taru; Sjöros, Tanja; Laine, Saara; Koivumäki, Mikko; Vähä‐Ypyä, Henri; Norha, Jooa; Kallio, Petri; Saarenhovi, Maria; Löyttyniemi, Eliisa; Sievänen, Harri; Houttu, Noora; Laitinen, Kirsi; Kalliokoski, Kari K.; Vasankari, Tommi; Knuuti, Juhani; Heinonen, Ilkka
- Daily standing time, dietary fiber, and intake of unsaturated fatty acids are beneficially associated with hepatic insulin sensitivity in adults with metabolic syndrome (2024)
- Frontiers in Endocrinology
Laine, Saara; Sjöros, Tanja; Garthwaite, Taru; Honka, Miikka-Juhani; Löyttyniemi, Eliisa; Eskola, Olli; Saarenhovi, Maria; Kallio, Petri; Koivumäki, Mikko; Vähä-Ypyä, Henri; Sievänen, Harri; Vasankari, Tommi; Hirvonen, Jussi; Laitinen, Kirsi; Houttu, Noora; Kalliokoski, Kari; Saunavaara, Virva; Knuuti, Juhani; Heinonen, Ilkka H.A.
- Effects of reduced sedentary time on resting, exercise and post-exercise blood pressure in inactive adults with metabolic syndrome – a six-month exploratory RCT (2024)
- Journal of Human Hypertension
Norha, Jooa; Sjöros, Tanja; Garthwaite, Taru; Laine, Saara; Saarenhovi, Maria; Kallio, Petri; Laitinen, Kirsi; Houttu, Noora; Vähä-Ypyä, Henri; Sievänen, Harri; Löyttyniemi, Eliisa; Vasankari, Tommi; Knuuti, Juhani; Kalliokoski, Kari K.; Heinonen, Ilkka H. A.
- Effects of reducing sedentary behaviour on back pain, paraspinal muscle insulin sensitivity and muscle fat fraction and their associations: a secondary analysis of a 6-month randomised controlled trial (2024) Norha, Jooa; Sjöros, Tanja: Garthwaite, Taru; Laine, Saara; Verho, Tiina; Saunavaara, Virva; Laitinen, Kirsi; Houttu, Noora; Hirvonen, Jussi; Vähä-Ypyä, Henri; Sievänen, Harri; Löyttyniemi, Eliisa; Vasankari, Tommi; Kalliokoski, Kari; Heinonen, Ilkka
- Sedentary behavior, physical activity, and energy metabolism in metabolic syndrome : with special reference to insulin sensitivity and metabolic flexibility (2024) Garthwaite Taru
- Sedentary behavior reduction and blood lipids in adults with metabolic syndrome: a 6-month randomized controlled trial (2024) Ylinen, Venla P.; Sjöros, Tanja; Laine, Saara; Garthwaite, Taru; Norh,a Jooa; Vähä-Ypyä, Henri; Löyttyniemi, Eliisa; Houttu, Noora; Laitinen, Kirsi; Kalliokoski, Kari K.; Sievänen, Harri; Vasankari, Tommi; Knuut,i Juhani; Heinonen, Ilkka HA
- Sedentary time associates detrimentally and physical activity beneficially with metabolic flexibility in adults with metabolic syndrome (2024)
- American Journal of Physiology : Endocrinology and Metabolism
Garthwaite, Taru; Sjöros, Tanja; Laine, Saara; Koivumäki, Mikko; Vähä-Ypyä, Henri; Verho, Tiina; Norha, Jooa; Kallio, Petri; Saarenhovi, Maria; Löyttyniemi, Eliisa; Sievänen, Harri; Houttu, Noora; Laitinen, Kirsi; Kalliokoski, Kari K.; Vasankari, Tommi; Knuuti, Juhani; Heinonen, Ilkka
- Tiredness after work associates with less leisure-time physical activity (2024) Sjöros, Tanja; Norha, Jooa; Johansson, Riitta; Laine, Saara; Garthwaite, Taru; Vähä-Ypyä, Henri; Löyttyniemi, Eliisa; Kalliokoski, Kari K.; Sievänen, Harri; Vasankari, Tommi; Knuuti, Juhani; Heinonen, Ilkka H. A.
- Associations of sedentary time, physical activity, and fitness with muscle glucose uptake in adults with metabolic syndrome (2023)
- Scandinavian Journal of Medicine and Science in Sports
Garthwaite Taru, Sjöros Tanja, Laine Saara, Koivumäki Mikko, Vähä-Ypyä Henri, Eskola Olli, Rajander Johan, Kallio Petri, Saarenhovi Maria, Löyttyniemi Eliisa, Sievänen Harri, Houttu Noora, Laitinen Kirsi, Kalliokoski Kari, Vasankari Tommi, Knuuti Juhani, Heinonen Ilkka
- Effects of reducing sedentary behavior on cardiorespiratory fitness in adults with metabolic syndrome: A 6-month RCT (2023)
- Scandinavian Journal of Medicine and Science in Sports
Norha Jooa, Sjöros Tanja, Garthwaite Taru, Laine Saara, Saarenhovi Maria, Kallio Petri, Laitinen Kirsi, Houttu Noora, Vähä-Ypyä Henri, Sievänen Harri, Löyttyniemi Eliisa, Vasankari Tommi, Knuuti Juhani, Kalliokoski Kari K., Heinonen Ilkka H.A.
- Reducing Sedentary Time and Whole-Body Insulin Sensitivity in Metabolic Syndrome - A 6-Month Randomized Controlled Trial (2023)
- Medicine and Science in Sports and Exercise
Sjöros Tanja, Laine Saara, Garthwaite Taru, Vähä-Ypyä Henri, Löyttyniemi Eliisa, Koivumäki Mikko, Houttu Noora, Laitinen Kirsi, Kalliokoski Kari K., Sievänen Harri, Vasankari Tomi, Knuuti Juhani, Heinonen Ilkka H.A.
- The effects of a 6-month intervention aimed to reduce sedentary time on skeletal muscle insulin sensitivity: a randomized controlled trial (2023)
- American Journal of Physiology : Endocrinology and Metabolism
Sjöros Tanja, Laine Saara, Garthwaite Taru, Vähä-Ypyä Henri, Koivumäki Mikko, Eskola Olli, Löyttyniemi Eliisa, Houttu Noora, Laitinen Kirsi, Kalliokoski Kari K., Sievänen Harri, Vasankari Tommi, Knuuti Juhani, Heinonen Ilkka H.A.
- The Effects Of Reducing Sedentary Behavior On Cardiorespiratory Fitness: A Six-month Randomized Controlled Trial (2023)
- Medicine and Science in Sports and Exercise
Norha Jooa, Sjöros Tanja, Garthwaite Taru, Laine Saara, Saarenhovi Maria, Kallio Petri, Laitinen Kirsi, Houttu Noora, Vähä-Ypyä Henri, Sievänen Harri, Löyttyniemi Eliisa, Vasankari Tommi, Knuuti Juhani, Kalliokoski Kari K., Heinonen Ilkka H.A.
- Association between cardiorespiratory fitness and metabolic health in overweight and obese adults (2022)
- Journal of Sports Medicine and Physical Fitness
Haapala Eero A, Sjöros Tanja, Laine Saara, Garthwaite Taru, Kallio Petri, Saarenhovi Maria, Vähä-Ypyä Henri, Löyttyniemi Eliisa, Sievänen Harri, Houttu Noora, Laitinen Kirsi, Kalliokoski Kari, Knuuti Juhani, Vasankari Tommi, Heinonen Ilkka H
