The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Kathryn H. Schmitz - One of the best experts on this subject based on the ideXlab platform.
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changes in arm tissue composition with slowly progressive Weight Lifting among women with breast cancer related lymphedema
Breast Cancer Research and Treatment, 2017Co-Authors: Xiaochen Zhang, Andrea L. Cheville, Justin Brown, Electra D Paskett, Babette S Zemel, Kathryn H. SchmitzAbstract:Background Studies in breast cancer-related lymphedema (BRCL) have exclusively examined total arm volume, but not the specific tissue composition that contributes to total volume. We evaluated baseline differences in arm tissue composition [fat mass, lean mass, bone mineral content (BMC), and bone mineral density (BMD)] between the affected and unaffected arms in women with BRCL. We compared changes in arm tissue composition and self-reported lymphedema symptoms after 1 year of Weight-Lifting versus control.
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changes in arm tissue composition with slowly progressive Weight Lifting among women with breast cancer related lymphedema
Journal of Clinical Oncology, 2017Co-Authors: Xiaochen Zhang, Andrea L. Cheville, Justin Brown, Electra D Paskett, Babette S Zemel, Kathryn H. SchmitzAbstract:114Background: We evaluated baseline differences in arm tissue composition (fat mass, lean mass, bone mineral content [BMC] and bone mineral density [BMD]) between the affected and unaffected arms in women with breast cancer-related lymphedema (BRCL). We compared changes in arm tissue composition and self-reported lymphedema symptoms after one-year of Weight-Lifting vs. usual-care. Methods: We utilized data from the PAL trial that included 141 women with BRCL. Arm tissue composition was quantified using dual-energy x-ray absorptiometry. The severity of lymphedema was quantified using self-report survey. Weight-Lifting was performed at community fitness facilities. Results: At baseline, the affected arm had more fat (D= 89.7±21.0g; P < 0.001) and lean mass (D= 149.1±25.3g; P < 0.001), but less BMC (D= -3.2±0.9g; P < 0.001) than the unaffected arm. No difference was observed in BMD. After 12-months of Weight-Lifting, composition of the affected arm was improved: lean mass (71.2±27.9g; P = 0.01) and BMD (0.0...
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great expectations racial differences in outcome expectations for a Weight Lifting intervention among black and white breast cancer survivors with or without lymphedema
Psycho-oncology, 2016Co-Authors: Lorraine T Dean, Justin Brown, Morgan Coursey, Kathryn H. SchmitzAbstract:BACKGROUND Black breast cancer survivors are less likely to engage in physical activity than are White survivors. This is unfortunate because physical activity may be especially beneficial given Black breast cancer survivors' higher rates of obesity and adverse treatment effects related to obesity, such as breast cancer-related lymphedema (BCRL). The analysis explored outcome expectations for a Weight Lifting intervention by sedentary Black or White female breast cancer survivors and assessed the role of BCRL on outcome expectations for exercise. METHODS Chi-squared tests compared mean outcome expectation values for Black and White breast cancer survivors who completed baseline surveys for the Physical Activity and Lymphedema trial (n = 281). With race as the independent variable, multivariable analysis compared results for women without BCRL with those with BCRL, separately. RESULTS Across the entire sample, Black survivors (n = 90) had significantly higher (p < 0.05) outcome expectations than White survivors (n = 191) for improvements in sleep, appearance, mental health, affect, energy, and eating habits, with small to moderate effect sizes. When stratified by BCRL status, differences by race were robust only among those with BCRL. CONCLUSIONS Black cancer survivors had greater expectations than White cancer survivors for how a Weight Lifting intervention would improve their physical and mental states; these differences were most apparent among women with BCRL. Improving outcomes in Black breast cancer survivors rests on the development of interventions that are appropriately tailored to address the expectations of this population and account for differences in persistent adverse effects of cancer such as BCRL. Copyright © 2016 John Wiley & Sons, Ltd.
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Weight Lifting and Physical Function Among Survivors of Breast Cancer: A Post Hoc Analysis of a Randomized Controlled Trial
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 2015Co-Authors: Justin C. Brown, Kathryn H. SchmitzAbstract:Purpose Survivors of breast cancer may experience deterioration of physical function. This is important because poor physical function may be associated with premature mortality, injurious falls, bone fracture, and disability. We conducted a post hoc analysis to explore the potential efficacy of slowly progressive Weight Lifting to reduce the incidence of physical function deterioration among survivors of breast cancer. Methods Between October 2005 and August 2008, we conducted a single-blind, 12-month, randomized controlled trial of twice-per-week slowly progressive Weight Lifting or standard care among 295 survivors of nonmetastatic breast cancer. In this post hoc analysis of data from the Physical Activity and Lymphedema Trial, we examined incident deterioration of physical function after 12 months, defined as a ≥ 10-point decrease in the physical function subscale of the Medical Outcomes Short-Form 36-item questionnaire. Results The proportion of participants who experienced incident physical function...
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Weight Lifting and appendicular skeletal muscle mass among breast cancer survivors a randomized controlled trial
Breast Cancer Research and Treatment, 2015Co-Authors: Justin Brown, Kathryn H. SchmitzAbstract:Low appendicular skeletal muscle mass (ASMM) is associated with premature mortality, hyperinsulinemia, frailty, disability, and low bone mineral density. We explored the potential efficacy of slowly progressive Weight Lifting to attenuate the decline of ASMM among breast cancer survivors by conducting a post hoc analysis of data from the Physical Activity and Lymphedema trial. Between October 2005 and August 2008, we conducted a single-blind, randomized controlled trial of twice weekly slowly progressive Weight Lifting or standard care among 295 non-metastatic breast cancer survivors. ASMM was quantified using dual-energy X-ray absorptiometry. Changes in ASMM were evaluated from baseline to 12 months between the Weight Lifting and control groups using repeated measures linear mixed effects regression models. Over 12 months, participants in the Weight Lifting group experienced attenuated declines in muscle mass compared to the control group, as reflected by relative ASMM (-0.01 ± 0.02 kg/m(2) vs -0.08 ± 0.03 kg/m(2); P = 0.041) and absolute ASMM (-0.02 ± 0.06 kg vs -0.22 ± 0.07 kg; P = 0.038), respectively. Weight Lifting did not alter other body composition outcomes including body mass index, total body mass, body fat percentage, and fat mass compared to the control group. Weight Lifting significantly increased upper and lower body muscle strength compared to the control group. The intervention was well tolerated with no serious adverse events related to Weight Lifting. Slowly progressive Weight Lifting attenuated the decline of ASMM among breast cancer survivors compared to standard care over 12 months. These data are hypothesis generating. Future studies should examine the efficacy of Weight Lifting to improve distal health outcomes among breast cancer survivors.
Justin Brown - One of the best experts on this subject based on the ideXlab platform.
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changes in arm tissue composition with slowly progressive Weight Lifting among women with breast cancer related lymphedema
Breast Cancer Research and Treatment, 2017Co-Authors: Xiaochen Zhang, Andrea L. Cheville, Justin Brown, Electra D Paskett, Babette S Zemel, Kathryn H. SchmitzAbstract:Background Studies in breast cancer-related lymphedema (BRCL) have exclusively examined total arm volume, but not the specific tissue composition that contributes to total volume. We evaluated baseline differences in arm tissue composition [fat mass, lean mass, bone mineral content (BMC), and bone mineral density (BMD)] between the affected and unaffected arms in women with BRCL. We compared changes in arm tissue composition and self-reported lymphedema symptoms after 1 year of Weight-Lifting versus control.
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changes in arm tissue composition with slowly progressive Weight Lifting among women with breast cancer related lymphedema
Journal of Clinical Oncology, 2017Co-Authors: Xiaochen Zhang, Andrea L. Cheville, Justin Brown, Electra D Paskett, Babette S Zemel, Kathryn H. SchmitzAbstract:114Background: We evaluated baseline differences in arm tissue composition (fat mass, lean mass, bone mineral content [BMC] and bone mineral density [BMD]) between the affected and unaffected arms in women with breast cancer-related lymphedema (BRCL). We compared changes in arm tissue composition and self-reported lymphedema symptoms after one-year of Weight-Lifting vs. usual-care. Methods: We utilized data from the PAL trial that included 141 women with BRCL. Arm tissue composition was quantified using dual-energy x-ray absorptiometry. The severity of lymphedema was quantified using self-report survey. Weight-Lifting was performed at community fitness facilities. Results: At baseline, the affected arm had more fat (D= 89.7±21.0g; P < 0.001) and lean mass (D= 149.1±25.3g; P < 0.001), but less BMC (D= -3.2±0.9g; P < 0.001) than the unaffected arm. No difference was observed in BMD. After 12-months of Weight-Lifting, composition of the affected arm was improved: lean mass (71.2±27.9g; P = 0.01) and BMD (0.0...
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great expectations racial differences in outcome expectations for a Weight Lifting intervention among black and white breast cancer survivors with or without lymphedema
Psycho-oncology, 2016Co-Authors: Lorraine T Dean, Justin Brown, Morgan Coursey, Kathryn H. SchmitzAbstract:BACKGROUND Black breast cancer survivors are less likely to engage in physical activity than are White survivors. This is unfortunate because physical activity may be especially beneficial given Black breast cancer survivors' higher rates of obesity and adverse treatment effects related to obesity, such as breast cancer-related lymphedema (BCRL). The analysis explored outcome expectations for a Weight Lifting intervention by sedentary Black or White female breast cancer survivors and assessed the role of BCRL on outcome expectations for exercise. METHODS Chi-squared tests compared mean outcome expectation values for Black and White breast cancer survivors who completed baseline surveys for the Physical Activity and Lymphedema trial (n = 281). With race as the independent variable, multivariable analysis compared results for women without BCRL with those with BCRL, separately. RESULTS Across the entire sample, Black survivors (n = 90) had significantly higher (p < 0.05) outcome expectations than White survivors (n = 191) for improvements in sleep, appearance, mental health, affect, energy, and eating habits, with small to moderate effect sizes. When stratified by BCRL status, differences by race were robust only among those with BCRL. CONCLUSIONS Black cancer survivors had greater expectations than White cancer survivors for how a Weight Lifting intervention would improve their physical and mental states; these differences were most apparent among women with BCRL. Improving outcomes in Black breast cancer survivors rests on the development of interventions that are appropriately tailored to address the expectations of this population and account for differences in persistent adverse effects of cancer such as BCRL. Copyright © 2016 John Wiley & Sons, Ltd.
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Weight Lifting and appendicular skeletal muscle mass among breast cancer survivors a randomized controlled trial
Breast Cancer Research and Treatment, 2015Co-Authors: Justin Brown, Kathryn H. SchmitzAbstract:Low appendicular skeletal muscle mass (ASMM) is associated with premature mortality, hyperinsulinemia, frailty, disability, and low bone mineral density. We explored the potential efficacy of slowly progressive Weight Lifting to attenuate the decline of ASMM among breast cancer survivors by conducting a post hoc analysis of data from the Physical Activity and Lymphedema trial. Between October 2005 and August 2008, we conducted a single-blind, randomized controlled trial of twice weekly slowly progressive Weight Lifting or standard care among 295 non-metastatic breast cancer survivors. ASMM was quantified using dual-energy X-ray absorptiometry. Changes in ASMM were evaluated from baseline to 12 months between the Weight Lifting and control groups using repeated measures linear mixed effects regression models. Over 12 months, participants in the Weight Lifting group experienced attenuated declines in muscle mass compared to the control group, as reflected by relative ASMM (-0.01 ± 0.02 kg/m(2) vs -0.08 ± 0.03 kg/m(2); P = 0.041) and absolute ASMM (-0.02 ± 0.06 kg vs -0.22 ± 0.07 kg; P = 0.038), respectively. Weight Lifting did not alter other body composition outcomes including body mass index, total body mass, body fat percentage, and fat mass compared to the control group. Weight Lifting significantly increased upper and lower body muscle strength compared to the control group. The intervention was well tolerated with no serious adverse events related to Weight Lifting. Slowly progressive Weight Lifting attenuated the decline of ASMM among breast cancer survivors compared to standard care over 12 months. These data are hypothesis generating. Future studies should examine the efficacy of Weight Lifting to improve distal health outcomes among breast cancer survivors.
Eduardo Sáez-sáez De Villarreal - One of the best experts on this subject based on the ideXlab platform.
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vertical jump biomechanics after plyometric Weight Lifting and combined Weight Lifting plyometric training
Journal of Strength and Conditioning Research, 2010Co-Authors: Fotini Arabatzi, Eleftherios Kellis, Eduardo Sáez-sáez De VillarrealAbstract:The purpose of this study was to compare the effects of an Olympic Weight Lifting (OL), a plyometric (PL), and combined Weight Lifting + plyometric (WP) training program on vertical jump (VJ) biomechanics. Thirty-six men were assigned randomly to 4 groups: PL group (n = 9), OL group (n = 9), WP group (), and control (C) group (n = 8). The experimental groups trained 3 d.wk, for 8 weeks. Sagital kinematics, VJ height, power, and electromyographic (EMG) activity from rectus femoris (RF) and medial gastrocnemius (GAS) were collected during squat jumping and countermovement jumping (CMJ) before and after training. The results showed that all experimental groups improved VJ height (p < 0.05). The OL training improved power and muscle activation during the concentric phase of the CMJ while the subjects used a technique with wider hip and knee angles after training (p < 0.05). The PL group subjects did not change their CMJ technique although there was an increase in RF activation and a decrease of GAS activity after training (p < 0.05). The WP group displayed a decline in maximal hip angle and a lower activation during the CMJ after training (p < 0.05). These results indicate that all training programs are adequate for improving VJ performance. However, the mechanisms for these improvements differ between the 3 training protocols. Olympic Weight Lifting training might be more appropriate to achieve changes in VJ performance and power in the precompetition period of the training season. Emphasis on the PL exercises should be given when the competition period approaches, whereas the combination of OL and PL exercises may be used in the transition phases from precompetition to the competition period.
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Vertical jump biomechanics after plyometric, Weight Lifting, and combined (Weight Lifting + plyometric) training.
Journal of strength and conditioning research, 2010Co-Authors: Fotini Arabatzi, Eleftherios Kellis, Eduardo Sáez-sáez De VillarrealAbstract:The purpose of this study was to compare the effects of an Olympic Weight Lifting (OL), a plyometric (PL), and combined Weight Lifting + plyometric (WP) training program on vertical jump (VJ) biomechanics. Thirty-six men were assigned randomly to 4 groups: PL group (n = 9), OL group (n = 9), WP group (), and control (C) group (n = 8). The experimental groups trained 3 d.wk, for 8 weeks. Sagital kinematics, VJ height, power, and electromyographic (EMG) activity from rectus femoris (RF) and medial gastrocnemius (GAS) were collected during squat jumping and countermovement jumping (CMJ) before and after training. The results showed that all experimental groups improved VJ height (p < 0.05). The OL training improved power and muscle activation during the concentric phase of the CMJ while the subjects used a technique with wider hip and knee angles after training (p < 0.05). The PL group subjects did not change their CMJ technique although there was an increase in RF activation and a decrease of GAS activity after training (p < 0.05). The WP group displayed a decline in maximal hip angle and a lower activation during the CMJ after training (p < 0.05). These results indicate that all training programs are adequate for improving VJ performance. However, the mechanisms for these improvements differ between the 3 training protocols. Olympic Weight Lifting training might be more appropriate to achieve changes in VJ performance and power in the precompetition period of the training season. Emphasis on the PL exercises should be given when the competition period approaches, whereas the combination of OL and PL exercises may be used in the transition phases from precompetition to the competition period.
Fotini Arabatzi - One of the best experts on this subject based on the ideXlab platform.
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vertical jump biomechanics after plyometric Weight Lifting and combined Weight Lifting plyometric training
Journal of Strength and Conditioning Research, 2010Co-Authors: Fotini Arabatzi, Eleftherios Kellis, Eduardo Sáez-sáez De VillarrealAbstract:The purpose of this study was to compare the effects of an Olympic Weight Lifting (OL), a plyometric (PL), and combined Weight Lifting + plyometric (WP) training program on vertical jump (VJ) biomechanics. Thirty-six men were assigned randomly to 4 groups: PL group (n = 9), OL group (n = 9), WP group (), and control (C) group (n = 8). The experimental groups trained 3 d.wk, for 8 weeks. Sagital kinematics, VJ height, power, and electromyographic (EMG) activity from rectus femoris (RF) and medial gastrocnemius (GAS) were collected during squat jumping and countermovement jumping (CMJ) before and after training. The results showed that all experimental groups improved VJ height (p < 0.05). The OL training improved power and muscle activation during the concentric phase of the CMJ while the subjects used a technique with wider hip and knee angles after training (p < 0.05). The PL group subjects did not change their CMJ technique although there was an increase in RF activation and a decrease of GAS activity after training (p < 0.05). The WP group displayed a decline in maximal hip angle and a lower activation during the CMJ after training (p < 0.05). These results indicate that all training programs are adequate for improving VJ performance. However, the mechanisms for these improvements differ between the 3 training protocols. Olympic Weight Lifting training might be more appropriate to achieve changes in VJ performance and power in the precompetition period of the training season. Emphasis on the PL exercises should be given when the competition period approaches, whereas the combination of OL and PL exercises may be used in the transition phases from precompetition to the competition period.
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Vertical jump biomechanics after plyometric, Weight Lifting, and combined (Weight Lifting + plyometric) training.
Journal of strength and conditioning research, 2010Co-Authors: Fotini Arabatzi, Eleftherios Kellis, Eduardo Sáez-sáez De VillarrealAbstract:The purpose of this study was to compare the effects of an Olympic Weight Lifting (OL), a plyometric (PL), and combined Weight Lifting + plyometric (WP) training program on vertical jump (VJ) biomechanics. Thirty-six men were assigned randomly to 4 groups: PL group (n = 9), OL group (n = 9), WP group (), and control (C) group (n = 8). The experimental groups trained 3 d.wk, for 8 weeks. Sagital kinematics, VJ height, power, and electromyographic (EMG) activity from rectus femoris (RF) and medial gastrocnemius (GAS) were collected during squat jumping and countermovement jumping (CMJ) before and after training. The results showed that all experimental groups improved VJ height (p < 0.05). The OL training improved power and muscle activation during the concentric phase of the CMJ while the subjects used a technique with wider hip and knee angles after training (p < 0.05). The PL group subjects did not change their CMJ technique although there was an increase in RF activation and a decrease of GAS activity after training (p < 0.05). The WP group displayed a decline in maximal hip angle and a lower activation during the CMJ after training (p < 0.05). These results indicate that all training programs are adequate for improving VJ performance. However, the mechanisms for these improvements differ between the 3 training protocols. Olympic Weight Lifting training might be more appropriate to achieve changes in VJ performance and power in the precompetition period of the training season. Emphasis on the PL exercises should be given when the competition period approaches, whereas the combination of OL and PL exercises may be used in the transition phases from precompetition to the competition period.
Xiaochen Zhang - One of the best experts on this subject based on the ideXlab platform.
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changes in arm tissue composition with slowly progressive Weight Lifting among women with breast cancer related lymphedema
Breast Cancer Research and Treatment, 2017Co-Authors: Xiaochen Zhang, Andrea L. Cheville, Justin Brown, Electra D Paskett, Babette S Zemel, Kathryn H. SchmitzAbstract:Background Studies in breast cancer-related lymphedema (BRCL) have exclusively examined total arm volume, but not the specific tissue composition that contributes to total volume. We evaluated baseline differences in arm tissue composition [fat mass, lean mass, bone mineral content (BMC), and bone mineral density (BMD)] between the affected and unaffected arms in women with BRCL. We compared changes in arm tissue composition and self-reported lymphedema symptoms after 1 year of Weight-Lifting versus control.
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changes in arm tissue composition with slowly progressive Weight Lifting among women with breast cancer related lymphedema
Journal of Clinical Oncology, 2017Co-Authors: Xiaochen Zhang, Andrea L. Cheville, Justin Brown, Electra D Paskett, Babette S Zemel, Kathryn H. SchmitzAbstract:114Background: We evaluated baseline differences in arm tissue composition (fat mass, lean mass, bone mineral content [BMC] and bone mineral density [BMD]) between the affected and unaffected arms in women with breast cancer-related lymphedema (BRCL). We compared changes in arm tissue composition and self-reported lymphedema symptoms after one-year of Weight-Lifting vs. usual-care. Methods: We utilized data from the PAL trial that included 141 women with BRCL. Arm tissue composition was quantified using dual-energy x-ray absorptiometry. The severity of lymphedema was quantified using self-report survey. Weight-Lifting was performed at community fitness facilities. Results: At baseline, the affected arm had more fat (D= 89.7±21.0g; P < 0.001) and lean mass (D= 149.1±25.3g; P < 0.001), but less BMC (D= -3.2±0.9g; P < 0.001) than the unaffected arm. No difference was observed in BMD. After 12-months of Weight-Lifting, composition of the affected arm was improved: lean mass (71.2±27.9g; P = 0.01) and BMD (0.0...
