Effects of Continuation of Modest Physical Activity after Vigorous Activity on Tibial Bone Mass in Adulthood in Wheel-Running Rats

2014 ◽  
Vol 02 (02) ◽  
Author(s):  
Fumihiko Kariya Jun Kitagawa
Keyword(s):  
Physical Activity ◽  
Bone Mass ◽  
Wheel Running ◽  
Vigorous Activity ◽  
Tibial Bone

Interactive effects of habitual physical activity and calcium intake on bone density in boys and girls

2004 ◽  
Vol 97 (4) ◽  
pp. 1203-1208 ◽  
Author(s):  
Ann V. Rowlands ◽  
David K. Ingledew ◽  
Sarah M. Powell ◽  
Roger G. Eston
Keyword(s):  
Physical Activity ◽  
Femoral Neck ◽  
Bone Mass ◽  
Bone Mineral ◽  
Proximal Femur ◽  
Calcium Intake ◽  
Habitual Physical Activity ◽  
Interactive Effects ◽  
Vigorous Activity ◽  
Total Body

The purpose of this study was to assess the interactive effects of habitual physical activity (total and vigorous intensity) and calcium intake on bone mineral content (BMC) in prepubertal boys and girls. Seventy-six children, aged 8–11 yr, wore accelerometers for up to 7 days to assess activity. Calcium intake was estimated by a 4-day weighted food diary. BMC and areal density (bone mineral density) were measured at the total body, proximal femur, and femoral neck by using dual-energy X-ray absorptiometry. Moderated regression analyses were used to assess the contributions of physical activity (total and vigorous) and calcium intake to BMC, residualized for bone area and body mass. Interactive effects of vigorous activity (≥6 metabolic equivalents) and calcium intake were found at the total body in boys ( b = 2.90 × 10−3) and in girls ( b = 6.58 × 10−3) and at the proximal femur ( b = 9.87 × 10−5) and femoral neck ( b = 2.29 × 10−5; where b is the regression coefficient from final equation) in boys only; residualized BMC was high only if both vigorous activity and calcium intake were high. There were no interactive effects of total activity and calcium intake. This study provides evidence for synergistic action of habitual vigorous activity and calcium intake on bone mass in children. Recommendations for optimizing bone mass should reflect this synergism.

scholarly journals EFFECTS OF PROLONGED VOLUNTARY WHEEL-RUNNING ON TIBIAL BONE-MASS IN GROWING MALE RATS USING pQCT

2004 ◽  
Vol 53 (1) ◽  
pp. 107-114
Author(s):  
FUMIHIKO KARIYA ◽  
JUN KITAGAWA ◽  
KEIZO KOBAYASHI ◽  
MITSUO NARUSAWA ◽  
YOSHIBUMI NAKAHARA
Keyword(s):  
Bone Mass ◽  
Wheel Running ◽  
Male Rats ◽  
Voluntary Wheel Running ◽  
Tibial Bone ◽  
Voluntary Wheel

scholarly journals Association between Visceral and Bone Marrow Adipose Tissue and Bone Quality in Sedentary and Physically Active Ovariectomized Wistar Rats

Life ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 478
Author(s):  
Hélder Fonseca ◽  
Andrea Bezerra ◽  
Ana Coelho ◽  
José Alberto Duarte
Keyword(s):  
Physical Activity ◽  
Bone Marrow ◽  
Adipose Tissue ◽  
Bone Mass ◽  
Bone Quality ◽  
Wistar Rats ◽  
Biomechanical Properties ◽  
Physically Active ◽  
Bone Formation Rate ◽  
Marrow Adiposity

Background: Obesity is considered protective for bone mass, but this view has been progressively challenged. Menopause is characterized by low bone mass and increased adiposity. Our aim was to determine how visceral and bone marrow adiposity change following ovariectomy (OVX), how they correlate with bone quality and if they are influenced by physical activity. Methods: Five-month-old Wistar rats were OVX or sham-operated and maintained in sedentary or physically active conditions for 9 months. Visceral and bone marrow adiposity as well as bone turnover, femur bone quality and biomechanical properties were assessed. Results: OVX resulted in higher weight, visceral and bone marrow adiposity. Visceral adiposity correlated inversely with femur Ct.Th (r = −0.63, p < 0.001), BV/TV (r = −0.67, p < 0.001), Tb.N (r = −0.69, p < 0.001) and positively with Tb.Sp (r = 0.58, p < 0.001). Bone marrow adiposity also correlated with bone resorption (r = 0.47, p < 0.01), bone formation rate (r = −0.63, p < 0.01), BV/TV (r = −0.85, p < 0.001), Ct.Th (r = −0.51, p < 0.0.01), and with higher empty osteocyte lacunae (r = 0.39, p < 0.05), higher percentage of osteocytes with oxidative stress (r = 0.64, p < 0.0.01) and lower femur maximal stress (r = −0.58, p < 0.001). Physical activity correlated inversely with both visceral (r = −0.74, p < 0.01) and bone marrow adiposity (r = −0.92, p < 0.001). Conclusions: OVX increases visceral and bone marrow adiposity which are associated with inferior bone quality and biomechanical properties. Physical activity could contribute to reduce adipose tissue and thereby improve bone quality.

F160 Physical activity, climacteric symptoms and bone mass in Hong Kong perimenopausal women

Maturitas ◽  
1996 ◽  
Vol 27 ◽  
pp. 93
Author(s):  
SC Ho ◽  
SG Chan ◽  
V Yip ◽  
C Chan ◽  
CL Law
Keyword(s):  
Physical Activity ◽  
Hong Kong ◽  
Bone Mass ◽  
Climacteric Symptoms ◽  
Perimenopausal Women

scholarly journals A randomized double-blind controlled calcium supplementation trial, and bone height acquisition in children

1995 ◽  
Vol 74 (1) ◽  
pp. 125-139 ◽  
Author(s):  
Warren T. K. Lee ◽  
Sophie S. F. Leung ◽  
Doram. Y. Leung ◽  
Heidi S. Y. Tsang ◽  
Joseph Lau ◽  
...  
Keyword(s):  
Physical Activity ◽  
Femoral Neck ◽  
Bone Mass ◽  
Bone Mineral ◽  
Chinese Children ◽  
Study Group ◽  
Double Blind ◽  
Baseline Serum ◽  
Lumbar Spinal ◽  
25 Hydroxycholecalciferol

There is limited information relating Ca intake to bone and height acquisition among Oriental children who consume little or even no milk. The present controlled study investigated the acquisition of bone mass and height of Chinese children with an initial Ca intake of approximately 567 mg/d who were supplemented to about 800 mg/d. Eighty-four 7-year-old Hong Kong Chinese children underwent an 18-month randomized, double-blind, controlled Ca-supplementation trial. The children were randomized to receive either 300 mg elemental Ca or a placebo tablet daily. Bone mass of the distal one-third radius was measured by single-photon absorptiometry, lumbar spine and femoral neck were determined using dual-energy X-ray absorptiometry. Measurements were repeated 6-monthly. Baseline serum 25-hydroxycholecalciferol concentration and physical activity were also assessed. Baseline Ca intakes of the study group and controls were respectively 571 (SD 326) and 563 (SD 337) mg/d. There were no significant differences in baseline serum 25-hydroxycholecalciferol concentration (P= 0·71) and physical activity (P= 0·36) between the study and control groups. After 18 months the study group had significantly greater increases in lumbar-spinal bone mineral content (20·9v. 16. 34%;P= 0·035), lumbar-spinal area (11·16v. 8·71%;P= 0middot;049), and a moderately greater increment in areal bone mineral density of the radius (7·74 0·600%;P= 0.081) when compared with the controls. The results confirm a positive effect of Ca on bone mass of the spine and radius but no effects on femoral-neck and height increase. A longer trial is warranted to confirm a positive Ca effect during childhood that may modify future peak bone mass.

Capacidades físicas y su relación con la actividad física y composición corporal en adultos (Physical capacities and their relationship with physical activity and body composition in adults)

Retos ◽  
2021 ◽  
Vol 41 ◽  
pp. 674-683
Author(s):  
Liliana Aracely Enriquez-Del Castillo ◽  
Natanael Cervantes Hernández ◽  
Ramón Candia Luján ◽  
Luis Alberto Flores Olivares
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Grip Strength ◽  
Moderate Activity ◽  
Vigorous Activity ◽  
Cross Sectional ◽  
Close Relationship ◽  
Las Mujeres ◽  
Post Hoc ◽  
Physical Capacities

La práctica regular de actividad física sugiere un aumento de la condición física y una mejora de la composición corporal; sin embargo, a pesar de que las personas cumplen con las directrices propuestas no logran obtener buenos indicadores de condición física los cuales brindan más información acerca de la salud. Objetivo: Analizar la relación entre las capacidades físicas de fuerza prensil, potencia en piernas, consumo máximo de oxígeno, actividad física con la composición corporal en adultos. Metodología: Estudio descriptivo correlacional de corte transversal, se evaluaron 100 adultos, se valoró fuerza prensil con dinamometría, potencia en piernas con tres tipos de saltos, VO2máx, la actividad física por cuestionario IPAQ y la composición corporal con bioimpedancia eléctrica. Resultados: Los varones poseen valores mayores de capacidades físicas, masa magra y actividad física realizada con mayor intensidad en comparación con las mujeres; los resultados muestran una estrecha relación entre la práctica de actividad física realizada con intensidades moderadas y altas en relación a las capacidades físicas de fuerza prensil y potencia en piernas en aquellas personas sin peso bajo u obesidad; Además, en todas éstas, mediante el análisis Post Hoc, se encontró que las diferencias se presentan entre la actividad baja en comparación con la vigorosa y en la moderada con respecto a la vigorosa. Conclusiones: Personas con normo y sobrepeso muestran mejores capacidades físicas, así como valores elevados de actividad física, mientras que altos índices de grasa corporal total y un IMC elevado son un factor determinante para el desarrollo de las mismas.  Abstract: The regular practice of physical activity suggests an increase in physical condition and an improvement in body composition, despite the fact that people comply with the proposed guidelines, they are unable to obtain good indicators of physical fitness, which provide more information about the Health. Objective: To analyze the relationship between physical capacities of grip strength, leg power, maximum oxygen consumption, physical activity and body composition in adults. Methodology: Cross-sectional correlational descriptive study, 100 adults were evaluated, grip strength was assessed with dynamometry, leg power with three types of jumps, VO2max, physical activity by IPAQ questionnaire and body composition with electrical bioimpedance. Results: Men have higher values ​​of physical capacities, lean mass and physical activity carried out with greater intensity compared to women; The results show a close relationship between the practice of physical activity carried out with moderate and high intensities in relation to the physical capacities of grip strength and power in the legs in those without underweight or obesity; In addition, in all of these, by means of Post Hoc analysis, it was found that the differences are presented between low activity compared to vigorous activity and moderate activity compared to vigorous activity. Conclusions: Normal and overweight people show better physical capacities as well as high levels of physical activity, while high levels of total body fat and a high BMI are a determining factor for their development.

scholarly journals Voluntary wheel running is effective on suppressing of obesity but not on blood pressure and insulin resistance in female rats fed with high fructose diet

2021 ◽  
Vol 19 (1) ◽  
pp. 21-28
Author(s):  
P. Tayfur ◽  
K. Gökçe Tezel ◽  
Ö. Barutçu ◽  
S. Yılmaz ◽  
E. Ö. Özgür ◽  
...  
Keyword(s):  
Physical Activity ◽  
Insulin Resistance ◽  
Blood Pressure ◽  
Body Weight ◽  
Weight Gain ◽  
Wheel Running ◽  
Female Rats ◽  
Walking Distance ◽  
Voluntary Activity ◽  
Voluntary Physical Activity

A fructose-rich diet has been known to cause metabolic syndrome effects such as body weight gain, increased blood pressure, blood lipids and glucose levels. The role of voluntary physical activity in these alterations is not known clearly. The aim of this study was to investigate the possible improving effects of voluntary physical activity in rats that were feeding with a fructose-rich diet. Spraque-Dawley female rats were separated as control (C;n=7), voluntary physical activity (A;n=7), fructose (F;n=7) and fructose+activity (F+A;n=7) groups. A and FA groups were kept in cages with running wheels during six weeks. F and FA groups were fed with adding 20% fructose in drinking water. Body weight was measured weekly and Lee Index was used to determine obesity. At the end of the feeding period serum glucose, insulin and lipid levels were measured by enzymatic method and blood pressure was determined with the tail-cuff method. Daily voluntary walking distance in F+A and A groups were similar during six weeks. Fructose intake induced to increase systolic blood pressure (p=0.001), diastolic blood pressure (p=0.002), glucose (p=0.041), insulin (p=0.001), cholesterol (p=0.001), triglyceride (p=0.001) and liver weight (p=0.035). The voluntary activity was found effective on the decrease of weight gain (p=0.018) however we did not observe a significant effect on blood pressure (p=0.917) and insulin resistance (p=0.565) following the fructose-rich diet. We conclude that voluntary activity has preventive effect on obesity but may not to be effective on increased blood pressure and insulin resistance in female rats which were feeding fructose-rich diet during six weeks.

scholarly journals EXERCISE AND PEAK BONE MASS: RECOMMENDATION FOR BUILDING HEALTHY BONES IN CHILDREN

2016 ◽  
Vol 1 (2) ◽  
pp. 137
Author(s):  
A Andi Kurniawan
Keyword(s):  
Physical Activity ◽  
Bone Mass ◽  
Bone Health ◽  
Weight Status ◽  
Bone Development ◽  
Weight Bearing ◽  
Well Being ◽  
Vital Role ◽  
High Impact ◽  
Childhood And Adolescence

Regular Physical activity (PA) and exercise plays a vital role in the health and well-being of people of all ages, and its associated with positive outcomes relating to weight status, cardiometabolic markers, chronic disease prevention, bone health and mental health. Genetic factors are the strongest determinants of bone mass, but PA and exercise with loading of the bone also has a major impact on bone mass as well as on bone strength. Physical activity has been proposed as a key factor for developing healthy bones in childhood and adolescence, mainly when high-impact and weight-bearing exercise above a certain intensity and duration. It has been associated with bone accretion showing an important osteogenic effect, mainly when high-impact and weight bearing physical activity occur. Muscle mass is also a determinant of bone development. Several studies have examined the association between PA and bone health among youths.

Sign in / Sign up

Export Citation Format

Share Document