Search results for "luusto"

Effects of high-impact training and detraining on femoral neck structure in premenopausal women : a Hip Structural Analysis (HSA) of an 18-month rand…

2005

Neuromuscular function and bone geometry and strength in aging

2010

Training, detraining and bone : effect of exercise on bone mass and structure with special reference to maintenance of the exercise-induced bone gain

2002

The objectives of this thesis were to investigate the effects of long-term mechanical loading on mass, size and mechanical strength of bone in male and female racquet sports players and to evaluate the maintenance of exercise-induced bone gain in these players during the following years of reduced training.

Vapaaehtoisen harjoittelun vaikutus kahden aerobiselta sopeutumiskyvyltään erilaisen rottakannan lihaksen hienorakenteeseen

2008

Bone growth in pubertal girls : cross-sectional and longitudinal investigation of the association of sex hormones, physical activity, body compositio…

2005

Strong bones are essential to overall health and quality of life. Optimizing peak bone mass during growth is a key strategy in preventing fragility fractures in later life. Understanding the biological process of bone growth and its regulators assumes the greatest importance in realizing this strategy. This study aimed to investigate bone growth in terms of bone size, bone mineral content (BMC) and volumetric mineral density (vBMD) and its relationship with sex hormones, physical activity (PA), body composition and muscle strength in pubertal girls. A total of 258 healthy girls aged 10-13 years were included in the 2-years observational study at baseline. The PA level was assessed using a q…

Exercise loading and bone structure

2009

The objective of this dissertation was to determine the types of exercise loading that are associated with the strength of bones. Four cross-sectional studies were conducted between 2004 and 2008 including 378 athletes and their 62 referents. Sixteen different sports were classified into five specific categories for the lower extremities and three categories for the upper extremities according to the type of exercise loading.Besides planar DXA-derived hip structural analysis, pQCT, and MRI methods allowing the assessment of true bone cross-sections were used for the bone structure analyses of the tibia, proximal femur, radius, and humerus. At the lower extremity, the high-impact exercise lo…

Iän ja fyysisen aktiivisuuden yhteys supistumisominaisuuksiltaan erityyppisten luustolihasten proteiinien O-GlcNAcylaatioon

2014

Genetic and environmental contributions to bone structural strength in postmenopausal women

2010

Muscle Free Fatty-Acid Uptake Associates to Mechanical Efficiency During Exercise in Humans

2018

Intrinsic factors related to muscle metabolism may explain the differences in mechanical efficiency (ME) during exercise. Therefore, this study aimed to investigate the relationship between muscle metabolism and ME. Totally 17 healthy recreationally active male participants were recruited and divided into efficient (EF; n = 8) and inefficient (IE; n = 9) groups, which were matched for age (mean ± SD 24 ± 2 vs. 23 ± 2 years), BMI (23 ± 1 vs. 23 ± 2 kg m−2), physical activity levels (3.4 ± 1.0 vs. 4.1 ± 1.0 sessions/week), and V˙O2peak (53 ± 3 vs. 52 ± 3 mL kg−1 min−1), respectively, but differed for ME at 45% of V˙O2peak intensity during submaximal bicycle ergometer test (EF 20.5 ± 3.5 vs. I…

Identifying and Assessing Inter-Muscular Fat at the Distal Diaphyseal Femur Measured by Peripheral Quantitative Computed Tomography (pQCT)

2021

INTRODUCTION Inter/intramuscular fat can be assessed with peripheral Quantitative Computed Tomography (pQCT) and is of interest as an indicator of ‘muscle quality’. Typical pQCT scan sites (forearm, lower leg) have a low amount of inter/intramuscular fat, however distal diaphyseal femur scan sites with conspicuous inter/intramuscular fat have been identified as potentially more prudent scan sites, even in healthy adolescents. However, current state of the art analysis methods require labour-intensive manual segmentation of the scan. The purpose of the present study was to evaluate the reliability of a novel open source automated enclosing convex polygon approach (source code https://github.…