scholarly journals Peak vertical jump power predicts radial bone strength better than hand grip strength in healthy individuals

2019 ◽  
Author(s):  
Vanessa Rose Yingling ◽  
Rebekkah Reichert ◽  
Andrew Denys ◽  
Priscilla Franson ◽  
Kimberly Espartero ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Cortical Bone ◽  
Grip Strength ◽  
Bone Strength ◽  
Muscle Function ◽  
Peak Power ◽  
Vertical Jump ◽  
Strength Parameters ◽  
Jump Power ◽  
The Relationship

Optimizing bone strength is key to long term bone health and potentially avoidance of Osteoporotic fracture later in life. Osteoporosis is considered a pediatric disease with geriatric consequences. However, measuring bone strength in children is complex and creates a practical problem for health professionals, teachers and parents. Muscle cross sectional area (MCSA) correlates with bone strength but muscular fitness measures may serve as a better proxy to assess bone strength. A non-invasive measure of muscle fitness that correlates to bone strength may provide a means to monitor bone strength throughout the lifespan. PURPOSE: To investigate the relationship between common muscle function tests (relative grip strength (RGS), peak vertical jump power (PP)) and bone strength in the radial diaphysis and epiphysis of a healthy population. METHODS: Healthy participants (n=147 (81 female)) performed a bilateral grip strength test using a hand dynamometer, and a maximal vertical jump test. Peak vertical jump power was calculated from maximal jump height using the Sayer’s equation. Moment of inertia (MoI), cortical area (CoA), cortical bone mineral density (cBMD), and polar strength-strain index (SSIp) were measured using peripheral Quantitative Computed Tomography (pQCT) to determine bone strength parameters at the 66% radial site (predominantly cortical bone). At the 4% site (trabecular bone site), vBMC.tb, vBMD.tb, ToA.tb and BSIc were measured. Hierarchical multiple regression analyses determined the relationship of each muscle function test for each bone envelope (cortical and trabecular). RESULTS: For the cortical bone measurements: RGS, and PP were both significantly correlated with CoA, MoI, and SSIp. However, neither of the muscle function measures were correlated with cBMD. Peak vertical jump power predicted bone strength parameters to a greater extent compared to RGS. Peak Power had the largest R2 values of all 3 measurements SSIp (R2=0.541, p<0.0001), CoA (R2=0.597, p<0.0001) and MoI (R2=0.568, p<0.0001). For the trabecular bone envelope, RGS was not a predictor of bone strength however peak power was a significant predictor of vBMC.tb (R2=0.548, p<0.0001), vBMD.tb (R2=0.267, p<0.0001) ToA..tb (R2=0.419, p<0.0001) and BSIc (R2=0.489, p<0.0001). CONCLUSION: Muscle function tests provide insight into bone strength in healthy adult populations. Both RGS and PP correlated with bone strength in the cortical envelope but RGS was not a predictor of trabecular bone strength parameters at the 4% radial site. Peak vertical jump power was a significant predictor of bone strength at both trabecular and cortical radial sites. Interestingly PP, a lower limb measurement explained the most variance in the bone strength of the upper limb. Lower limb muscle power calculated by vertical jump assessment could provide a means to monitor and assess bone health.

scholarly journals Peak vertical jump power predicts radial bone strength better than hand grip strength in healthy individuals.

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Vanessa Yingling ◽  
Rebekkah Reichert ◽  
Andrew Denys ◽  
Priscilla Franson ◽  
Kimberly Espartero ◽  
...  
Keyword(s):  
Cortical Bone ◽  
Grip Strength ◽  
Bone Strength ◽  
Bone Mineral ◽  
Muscle Function ◽  
Vertical Jump ◽  
Mineral Density ◽  
Strength Parameters ◽  
Jump Power ◽  
The Relationship

Osteoporosis is considered a pediatric disease with geriatric consequences. However, measuring bone strength in children is complex and creates a practical problem for health professionals, teachers and parents. A non-invasive measure of muscle fitness that correlates to bone strength may provide a means to monitor bone strength throughout the lifespan. Therefore, the purpose of this study was to investigate the relationship between common muscle function tests (relative grip strength (RGS), peak vertical jump power (PP)) and bone strength in the radial diaphysis and epiphysis of a healthy population. Healthy participants (n=147 (81 female)) performed a bilateral grip strength test using a hand dynamometer, and a maximal vertical jump test. Peak vertical jump power was calculated from maximal jump height using the Sayer’s equation. Moment of inertia (MoI), cortical area (CoA), cortical bone mineral density (cBMD), and polar strength-strain index (SSIp) were measured using peripheral Quantitative Computed Tomography (pQCT) to determine bone strength parameters at the 66% radial site (predominantly cortical bone). At the 4% site (trabecular bone site), bone mineral content (vBMC.tb), bone mineral density (vBMD.tb), total area (ToA.tb) and bone strength index (BSIc) were measured. Hierarchical multiple regression analyses determined the relationship of each muscle function test for each bone envelope (cortical and trabecular). For the cortical bone measurements: RGS, and PP were both significantly correlated with CoA, MoI, and SSIp. Peak vertical jump power predicted bone strength parameters to a greater extent compared to RGS. For the trabecular bone envelope, RGS was not a predictor of bone strength however peak power was a significant predictor of bone strength parameters. Peak vertical jump power was a significant predictor of bone strength at both trabecular and cortical radial sites. Interestingly PP, a lower limb measurement explained the most variance in the bone strength of the upper limb.

scholarly journals Porcupine inhibitors impair trabecular and cortical bone mass and strength in mice

2018 ◽  
Vol 238 (1) ◽  
pp. 13-23 ◽  
Author(s):  
Thomas Funck-Brentano ◽  
Karin H Nilsson ◽  
Robert Brommage ◽  
Petra Henning ◽  
Ulf H Lerner ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Bone Loss ◽  
Bone Formation ◽  
Bone Mass ◽  
Trabecular Bone ◽  
Cortical Bone ◽  
Bone Strength ◽  
Bending Test ◽  
Bone Homeostasis ◽  
Mineral Density

WNT signaling is involved in the tumorigenesis of various cancers and regulates bone homeostasis. Palmitoleoylation of WNTs by Porcupine is required for WNT activity. Porcupine inhibitors are under development for cancer therapy. As the possible side effects of Porcupine inhibitors on bone health are unknown, we determined their effects on bone mass and strength. Twelve-week-old C57BL/6N female mice were treated by the Porcupine inhibitors LGK974 (low dose = 3 mg/kg/day; high dose = 6 mg/kg/day) or Wnt-C59 (10 mg/kg/day) or vehicle for 3 weeks. Bone parameters were assessed by serum biomarkers, dual-energy X-ray absorptiometry, µCT and histomorphometry. Bone strength was measured by the 3-point bending test. The Porcupine inhibitors were well tolerated demonstrated by normal body weight. Both doses of LGK974 and Wnt-C59 reduced total body bone mineral density compared with vehicle treatment (P < 0.001). Cortical thickness of the femur shaft (P < 0.001) and trabecular bone volume fraction in the vertebral body (P < 0.001) were reduced by treatment with LGK974 or Wnt-C59. Porcupine inhibition reduced bone strength in the tibia (P < 0.05). The cortical bone loss was the result of impaired periosteal bone formation and increased endocortical bone resorption and the trabecular bone loss was caused by reduced trabecular bone formation and increased bone resorption. Porcupine inhibitors exert deleterious effects on bone mass and strength caused by a combination of reduced bone formation and increased bone resorption. We suggest that cancer targeted therapies using Porcupine inhibitors may increase the risk of fractures.

Relationship between Anaerobic Power and Jumping of Selected Male Volleyball Players of Different Ages

2005 ◽  
Vol 100 (3) ◽  
pp. 607-614 ◽  
Author(s):  
Athanasios Kasabalis ◽  
Helen Douda ◽  
Savvas P. Tokmakidis
Keyword(s):  
Peak Power ◽  
Vertical Jump ◽  
Anaerobic Power ◽  
Age Groups ◽  
Specific Training ◽  
Wingate Anaerobic Test ◽  
Volleyball Players ◽  
Maximal Anaerobic Power ◽  
The Relationship ◽  
Anaerobic Test

The aim of the present study was to evaluate the anaerobic power of elite male volleyball players, using the Wingate Anaerobic Test to examine the relationship between anaerobic power and jumping performance. Athletes ( n = 56) and Nonathletes ( n = 53) were divided into three age groups: Adults (18–25 yr.), Juniors (15–16 yr.), and Youth (10–11 yr.). Measurements of height, body mass, vertical jump and Wingate scores indicated higher values for athletes. The specific training effects of anaerobic power were more pronounced at the age of 10–11 years than for Nonathletes. A significant correlation coefficient between peak power and vertical jump was found for Athletes ( r = .86) and for the total group ( r = .82). These results indicated that vertical jump may predict the maximal anaerobic power and could be used by coaches as a practical and easy-to-apply field screening test for evaluation in volleyball training.

scholarly journals Bone microarchitecture and estimated bone strength in men with active acromegaly

2017 ◽  
Vol 177 (5) ◽  
pp. 409-420 ◽  
Author(s):  
Paula P B Silva ◽  
Fatemeh G Amlashi ◽  
Elaine W Yu ◽  
Karen J Pulaski-Liebert ◽  
Anu V Gerweck ◽  
...  
Keyword(s):  
Bone Density ◽  
Trabecular Bone ◽  
Cortical Bone ◽  
Bone Strength ◽  
Bone Microarchitecture ◽  
Healthy Controls ◽  
Trabecular Bone Density ◽  
Trabecular Bone Microarchitecture ◽  
Skeletal Site ◽  
Active Acromegaly

Context Both acromegaly and adult growth hormone deficiency (GHD) are associated with increased fracture risk. Sufficient data are lacking regarding cortical bone microarchitecture and bone strength, as assessed by microfinite element analysis (µFEA). Objective To elucidate both cortical and trabecular bone microarchitecture and estimated bone strength in men with active acromegaly or GHD compared to healthy controls. Design and subjects Cross-sectional study at a clinical research center, including 48 men (16 with acromegaly, 16 with GHD and 16 healthy controls). Outcome measures Areal bone mineral density (aBMD), cortical and trabecular bone microarchitecture and estimated bone strength (µFEA) at the radius and tibia. Results aBMD was not different between the 3 groups at any skeletal site. At the radius, patients with acromegaly had greater cortical area (P < 0.0001), cortical thickness (P = 0.0038), cortical pore volume (P < 0.0001) and cortical porosity (P = 0.0008), but lower trabecular bone density (P = 0.0010) compared to controls. At the tibia, patients with acromegaly had lower trabecular bone density (P = 0.0082), but no differences in cortical bone microstructure. Compressive strength and failure load did not significantly differ between groups. These findings persisted after excluding patients with hypogonadism. Bone microarchitecture was not deficient in patients with GHD. Conclusions Both cortical and trabecular microarchitecture are altered in men with acromegaly. Our data indicate that GH excess is associated with distinct effects in cortical vs trabecular bone compartments. Our observations also affirm the limitations of aBMD testing in the evaluation of patients with acromegaly.

Relative Net Vertical Impulse Determines Jumping Performance

2011 ◽  
Vol 27 (3) ◽  
pp. 207-214 ◽  
Author(s):  
Tyler J. Kirby ◽  
Jeffrey M. McBride ◽  
Tracie L. Haines ◽  
Andrea M. Dayne
Keyword(s):  
Body Mass ◽  
Peak Power ◽  
Vertical Jump ◽  
Peak Force ◽  
Jump Height ◽  
Countermovement Jump ◽  
Jump Performance ◽  
Velocity Peak ◽  
Force Peak ◽  
The Relationship

The purpose of this investigation was to determine the relationship between relative net vertical impulse and jump height in a countermovement jump and static jump performed to varying squat depths. Ten college-aged males with 2 years of jumping experience participated in this investigation (age: 23.3 ± 1.5 years; height: 176.7 ± 4.5 cm; body mass: 84.4 ± 10.1 kg). Subjects performed a series of static jumps and countermovement jumps in a randomized fashion to a depth of 0.15, 0.30, 0.45, 0.60, and 0.75 m and a self-selected depth (static jump depth = 0.38 ± 0.08 m, countermovement jump depth = 0.49 ± 0.06 m). During the concentric phase of each jump, peak force, peak velocity, peak power, jump height, and net vertical impulse were recorded and analyzed. Net vertical impulse was divided by body mass to produce relative net vertical impulse. Increasing squat depth corresponded to a decrease in peak force and an increase in jump height and relative net vertical impulse for both static jump and countermovement jump. Across all depths, relative net vertical impulse was statistically significantly correlated to jump height in the static jump (r= .9337,p< .0001, power = 1.000) and countermovement jump (r= .925,p< .0001, power = 1.000). Across all depths, peak force was negatively correlated to jump height in the static jump (r= –0.3947,p= .0018, power = 0.8831) and countermovement jump (r= –0.4080,p= .0012, power = 0.9050). These results indicate that relative net vertical impulse can be used to assess vertical jump performance, regardless of initial squat depth, and that peak force may not be the best measure to assess vertical jump performance.

The assessment of trabecular bone parameters and cortical bone strength: A comparison of micro-CT and dental cone-beam CT

2013 ◽  
Vol 46 (15) ◽  
pp. 2611-2618 ◽  
Author(s):  
Jui-Ting Hsu ◽  
Shun-Ping Wang ◽  
Heng-Li Huang ◽  
Ying-Ju Chen ◽  
Jay Wu ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Cortical Bone ◽  
Bone Strength ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Micro Ct ◽  
Bone Parameters

The Relationship Between Vertical Jump Power Estimates and Weightlifting Ability: A Field-Test Approach

2004 ◽  
Vol 18 (3) ◽  
pp. 534-539 ◽  
Author(s):  
Jon M. Carlock ◽  
Sarah L. Smith ◽  
Michael J. Hartman ◽  
Robert T. Morris ◽  
Dragomir A. Ciroslan ◽  
...  
Keyword(s):  
Field Test ◽  
Vertical Jump ◽  
Jump Power ◽  
The Relationship

scholarly journals Acute hypothalamic suppression significantly affects trabecular bone but not cortical bone following recovery and ovariectomy surgery in a rat model

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1575
Author(s):  
Vanessa R. Yingling ◽  
Kathryn A. Mitchell ◽  
Megan Lunny
Keyword(s):  
Trabecular Bone ◽  
Cortical Bone ◽  
Bone Strength ◽  
Bone Volume ◽  
Moment Of Inertia ◽  
Bone Morphology ◽  
Bone Stiffness ◽  
Time Points ◽  
Polar Moment ◽  
Injection Protocol

Background.Osteoporosis is “a pediatric disease with geriatric consequences.” Bone morphology and tissue quality co-adapt during ontogeny for sufficient bone stiffness. Altered bone morphology from hypothalamic amenorrhea, a risk factor for low bone mass in women, may affect bone strength later in life. Our purpose was to determine if altered morphology following hypothalamic suppression during development affects cortical bone strength and trabecular bone volume (BV/TV) at maturity.Methods.Female rats (25 days old) were assigned to a control (C) group (n= 45) that received saline injections (.2 cc) or an experimental group (GnRH-a) (n= 45) that received gonadotropin releasing hormone antagonist injections (.24 mg per dose) for 25 days. Fifteen animals from each group were sacrificed immediately after the injection protocol at Day 50 (C, GnRH-a). The remaining animals recovered for 135 days and a subset of each group was sacrificed at Day 185 ((C-R) (n= 15) and (G-R) (n= 15)). The remaining animals had an ovariectomy surgery (OVX) at 185 days of age and were sacrificed 40 days later (C-OVX) (n= 15) and (G-OVX) (n= 15). After sacrifice femurs were mechanically tested and scanned using micro CT. Serum C-terminal telopeptides (CTX) and insulin-like growth factor 1 (IGF-1) were measured. Two-way ANOVA (2 groups (GnRH-a and Control) X 3 time points (Injection Protocol, Recovery, post-OVX)) was computed.Results.GnRH-a injections suppressed uterine weights (72%) and increased CTX levels by 59%. Bone stiffness was greater in the GnRH-a groups compared to C. Ash content and cortical bone area were similar between groups at all time points. Polar moment of inertia, a measure of bone architecture, was 15% larger in the GnRH-a group and remained larger than C (19%) following recovery. Both the polar moment of inertia and cortical area increased linearly with the increases in body weight. Following the injection protocol, trabecular BV/TV was 31% lower in the GnRH-a group compared to C, a similar deficit in BV/TV was also measured following recovery and post-OVX. The trabecular number and thickness were lower in the GnRH-a group compared to control.Conclusion.These data suggest that following a transient delay in pubertal onset, trabecular bone volume was significantly lower and no restoration of bone volume occurred following recovery or post-OVX surgery. However, cortical bone strength was maintained through architectural adaptations in the cortical bone envelope. An increase in the polar moment of inertia offset increased bone resorption. The current data are the first to suppress trabecular bone during growth, and then add an OVX protocol at maturity. Trabecular bone and cortical bone differed in their response to hypothalamic suppression during development; trabecular bone was more sensitive to the negative effects of hypothalamic suppression.

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