Calibration and validation of accelerometer-based activity monitors: A systematic review of machine-learning approaches V Farrahi, M Niemelä, M Kangas, R Korpelainen, T Jämsä Gait & Posture 68, 285-299, 2019 | 134 | 2019 |
Machine-learning models for activity class prediction: A comparative study of feature selection and classification algorithms J Chong, P Tjurin, M Niemelä, T Jämsä, V Farrahi Gait & Posture 89, 45-53, 2021 | 45 | 2021 |
Fitness, fatness, physical activity, and autonomic function in midlife. AM Kiviniemi, N Perkiömäki, J Auvinen, M Niemelä, T Tammelin, ... Medicine and science in sports and exercise 49 (12), 2459-2468, 2017 | 44 | 2017 |
Chronotypes and objectively measured physical activity and sedentary time at midlife L Nauha, H Jurvelin, L Ala‐Mursula, M Niemelä, T Jämsä, M Kangas, ... Scandinavian journal of medicine & science in sports 30 (10), 1930-1938, 2020 | 40 | 2020 |
Compositional associations of sleep and activities within the 24-H cycle with Cardiometabolic health markers in adults V Farrahi, M Kangas, R Walmsley, M Niemelä, A Kiviniemi, K Puukka, ... Medicine and Science in Sports and Exercise 53 (2), 324, 2021 | 38 | 2021 |
Dose-response relation of self-reported and accelerometer-measured physical activity to perceived health in middle age—the Northern Finland Birth Cohort 1966 Study MS Niemelä, M Kangas, RJ Ahola, JP Auvinen, AM Leinonen, ... BMC Public Health 19 (1), 1-9, 2019 | 34 | 2019 |
Intensity and temporal patterns of physical activity and cardiovascular disease risk in midlife M Niemelä, M Kangas, V Farrahi, A Kiviniemi, AM Leinonen, R Ahola, ... Preventive medicine 124, 33-41, 2019 | 32 | 2019 |
Evaluating and enhancing the generalization performance of machine learning models for physical activity intensity prediction from raw acceleration data V Farrahi, M Niemelä, P Tjurin, M Kangas, R Korpelainen, T Jämsä IEEE journal of biomedical and health informatics 24 (1), 27-38, 2019 | 25 | 2019 |
Correlates of physical activity behavior in adults: a data mining approach V Farrahi, M Niemelä, M Kärmeniemi, S Puhakka, M Kangas, ... International Journal of Behavioral Nutrition and Physical Activity 17 (1), 1-14, 2020 | 18 | 2020 |
Polygenic risk scores and physical activity UM Kujala, T Palviainen, P Pesonen, K Waller, E Sillanpää, M Niemelä, ... Medicine and science in sports and exercise 52 (7), 1518, 2020 | 18 | 2020 |
Residential relocation trajectories and neighborhood density, mixed land use and access networks as predictors of walking and bicycling in the Northern Finland Birth Cohort 1966 M Kärmeniemi, T Lankila, T Ikäheimo, S Puhakka, M Niemelä, T Jämsä, ... International journal of behavioral nutrition and physical activity 16 (1), 1-12, 2019 | 18 | 2019 |
Prolonged bouts of sedentary time and cardiac autonomic function in midlife M Niemelä, A Kiviniemi, M Kangas, V Farrahi, AM Leinonen, R Ahola, ... Translational Sports Medicine 2 (6), 341-350, 2019 | 14 | 2019 |
Joint profiles of sedentary time and physical activity in adults and their associations with cardiometabolic health V Farrahi, M Rostami, D Dumuid, S Chastin, M Niemelä, R Korpelainen, ... Medicine & Science in Sports & Exercise 54 (12), 2118-2128, 2022 | 13 | 2022 |
Satellite Imaging-Based Residential Greenness and Accelerometry Measured Physical Activity at Midlife—Population-Based Northern Finland Birth Cohort 1966 Study S Puhakka, T Lankila, R Pyky, M Kärmeniemi, M Niemelä, K Kangas, ... International Journal of Environmental Research and Public Health 17 (24), 9202, 2020 | 9 | 2020 |
Objectively measured physical activity is associated with vertebral size in midlife M Modarress-Sadeghi, P Oura, JA Junno, M Niemelä, J Niinimäki, ... Med Sci Sports Exerc 51 (8), 1606-1612, 2019 | 9 | 2019 |
Associations of fitness and physical activity with orthostatic responses of heart rate and blood pressure at midlife P Oksanen, MP Tulppo, J Auvinen, M Niemelä, T Jämsä, K Puukka, ... Scandinavian journal of medicine & science in sports 29 (6), 874-885, 2019 | 6 | 2019 |
Classification of physical activities and sedentary behavior using raw data of 3D hip acceleration P Tjurin, M Niemelä, M Huusko, R Ahola, M Kangas, T Jämsä EMBEC & NBC 2017: Joint Conference of the European Medical and Biological …, 2018 | 6 | 2018 |
Infant motor development and physical activity and sedentary time at midlife AK Karppanen, T Hurtig, J Miettunen, M Niemelä, T Tammelin, ... Scandinavian Journal of Medicine & Science in Sports 31 (7), 1450-1460, 2021 | 4 | 2021 |
Association Between Vertebral Dimensions and Lumbar Modic Changes M Julin, J Saukkonen, P Oura, JA Junno, M Niemelä, J Määttä, J Niinimäki, ... Spine 46 (7), E415-E425, 2021 | 4 | 2021 |
Accelerometry-based characteristics of overall sedentary behavior and sitting in middle-aged adults P Tjurin, M Niemelä, M Kangas, H Vähä-Ypyä, H Sievänen, T Jämsä, ... Measurement in Physical Education and Exercise Science 23 (3), 249-257, 2019 | 4 | 2019 |