Harri Sievänen

ORCID: 0000-0003-3172-248X
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About
Contact & Profiles
Research Areas
  • Bone health and osteoporosis research
  • Physical Activity and Health
  • Obesity, Physical Activity, Diet
  • Nutrition and Health in Aging
  • Bone fractures and treatments
  • Body Composition Measurement Techniques
  • Balance, Gait, and Falls Prevention
  • Lower Extremity Biomechanics and Pathologies
  • Cardiovascular and exercise physiology
  • Sports injuries and prevention
  • Hip disorders and treatments
  • Hip and Femur Fractures
  • Sports Performance and Training
  • Bone Metabolism and Diseases
  • Vitamin D Research Studies
  • Cerebral Palsy and Movement Disorders
  • Bone health and treatments
  • Knee injuries and reconstruction techniques
  • Injury Epidemiology and Prevention
  • Musculoskeletal pain and rehabilitation
  • Celiac Disease Research and Management
  • Bone and Joint Diseases
  • Orthopaedic implants and arthroplasty
  • Health and Lifestyle Studies
  • Microscopic Colitis

Urho Kaleva Kekkonen Institute
2016-2025

Beneq (Finland)
2023

Tampere University
1997-2022

National Institute for Health Research
2021

Haaga-Helia University of Applied Sciences
2015

Pirkanmaa Hospital District
2009-2013

Helsinki University Hospital
2010-2013

Iberoamerican Cochrane Centre
2013

University of Oxford
2013

Kanta-Hämeen Keskussairaala
2013

Abstract Bone characteristics of the humeral shaft and distal radius were measured from 64 female tennis squash players their 27 age-, height-, weight-matched controls with peripheral quantitative tomography (pQCT) DXA. The divided into two groups according to starting age or training (either before after menarche) examine possible differences in loading-induced changes bone structure volumetric density. used pQCT variables mineral content (BMC), total cross-sectional area (TotA) bone,...

10.1359/jbmr.2002.17.12.2281 article EN Journal of Bone and Mineral Research 2002-12-01

This randomized cross‐over study was designed to investigate the effects of a 4‐min vibration bout on muscle performance and body balance in young, healthy subjects. Sixteen volunteers (eight men, eight women, age 24–33 years) underwent both vibration‐ sham‐interventions order different days. Six tests (stability platform, grip strength, isometric extension strength lower extremities, tandem‐walk, vertical jump shuttle run) were performed 10 min before (baseline), 2 60 after intervention....

10.1046/j.1365-2281.2002.00410.x article EN Clinical Physiology and Functional Imaging 2002-03-01

Abstract Hip scans of U.S. adults aged 20–99 years acquired in the Third National Health and Nutrition Examination Survey (NHANES III) using dual-energy X-ray absorptiometry (DXA) were analyzed with a structural analysis program. The program analyzes narrow (3 mm wide) regions at specific locations across proximal femur to measure bone mineral density (BMD) as well cross-sectional areas (CSAs), moments inertia (CSMI), section moduli, subperiosteal widths, estimated mean cortical thickness....

10.1359/jbmr.2000.15.12.2297 article EN Journal of Bone and Mineral Research 2000-12-01

While vitamin D supplementation and exercise are recommended for prevention of falls older people, results regarding these 2 factors contradictory.To determine the effectiveness targeted training in reducing injurious among women.A 2-year randomized, double-blind, placebo-controlled open trial conducted between April 2010 March 2013 Tampere, Finland. Participants were 409 home-dwelling women 70 to 80 years old. The main inclusion criteria at least 1 fall during previous year, no use...

10.1001/jamainternmed.2015.0225 article EN JAMA Internal Medicine 2015-03-23

Purpose Our recent study of three accelerometer brands in various ambulatory activities showed that the mean amplitude deviation (MAD) resultant acceleration signal performed best separating different intensity levels and provided excellent agreement between devices. The objective this was to derive a regression model estimates oxygen consumption (VO2) from MAD values validate MAD-based cut-points for light, moderate vigorous locomotion against VO2 within wide range speeds. Methods 29...

10.1371/journal.pone.0134813 article EN cc-by PLoS ONE 2015-08-20

Summary Objective Accelerometers are increasingly used for objective assessment of physical activity. However, because lack the proprietary analysis algorithms, direct comparisons between accelerometer brands difficult. In this study, we propose and evaluate open source methods commensurate raw data irrespective brand. Design Twenty‐one participants carried simultaneously three different tri‐axial accelerometers on their waist during five sedentary activities intensity levels bipedal...

10.1111/cpf.12127 article EN Clinical Physiology and Functional Imaging 2014-01-07

Recent animal studies have given evidence that vibration loading may be an efficient and safe way to improve mass mechanical competence of bone, thus providing great potential for preventing treating osteoporosis. Randomized controlled trials on the safety efficacy human skeleton are, however, lacking. This randomized intervention trial was designed assess effects 8-month whole body muscular performance, balance in young healthy adults. Fifty-six volunteers (21 men 35 women; age, 19-38...

10.1359/jbmr.2003.18.5.876 article EN Journal of Bone and Mineral Research 2003-05-01

Abstract Loading modality is a strong external determinant of structure and concomitant strength the femoral neck. Particularly effective seem to be loadings, which arise from high impacts or atypical loading directions. Introduction: Physical plays an important role, not only in process bone modeling remodeling, but also shaping mechanically appropriate structure. This study aimed at testing hypothesis that type partly determines neck Materials Methods: A total 255 premenopausal female...

10.1359/jbmr.041119 article EN Journal of Bone and Mineral Research 2005-03-01

Abstract Bone characteristics of the humeral shaft and distal radius were measured from 64 female tennis squash players their 27 age-, height-, weight-matched controls with peripheral quantitative tomography (pQCT) dual energy X-ray absorptiometry (DXA). The divided into two groups according to starting age or training (either before after menarche) examine possible differences in loading-induced changes bone structure volumetric density. following pQCT variables used: mineral content, total...

10.1359/jbmr.2003.18.2.352 article EN Journal of Bone and Mineral Research 2003-02-01

Abstract According to experimental studies, low-amplitude high-frequency vibration is anabolic bone tissue, whereas in clinical trials, the effects have varied. Given potential of whole body training, this study aimed at exploring transmission vertical sinusoidal human over a wide range applicable amplitudes (from 0.05 3 mm) and frequencies 10 90 Hz). Vibration-induced accelerations were assessed with skin-mounted triaxial accelerometers ankle, knee, hip, lumbar spine four males standing on...

10.1359/jbmr.080315 article EN Journal of Bone and Mineral Research 2008-03-18

Abstract This study evaluated the effects of long-term unilateral physical activity (tennis) on playing arm humerus. Total lengths both humeri, site-specific widths, and bone mineral contents (BMC) at proximal, middle, distal parts bones were measured using dual-energy X-ray absorptiometry (DXA). Bone apparent density (BMAD), cortical wall thickness (CWT), cross-sectional moment inertia (CSMI), section modulus (Z) approximated from DXA data for describing bone's mechanical characteristics...

10.1002/jbmr.5650110619 article EN Journal of Bone and Mineral Research 1996-06-01

The purpose of this randomized cross-over study was to investigate the effects a 4-min long, 2-mm vertically-vibrating vibration-exercise on muscle performance and body balance in healthy subjects. Sixteen volunteers (eight men women aged 18-35 years) underwent both vibration- sham-interventions order different days. Performance- balance-tests (stability platform, grip strength, extension strength lower extremities, tandem-walk, vertical jump shuttle-run) were done 10 minutes before...

10.1055/s-2002-33148 article EN International Journal of Sports Medicine 2002-07-01
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