257 research outputs found
Supplement_Table_1 – Supplemental material for Exercise Guidelines for Gait Function in Parkinson’s Disease: A Systematic Review and Meta-analysis
No full textSupplemental material, Supplement_Table_1 for Exercise Guidelines for Gait Function in Parkinson’s Disease: A Systematic Review and Meta-analysis by Meng Ni, Joseph B. Hazzard, Joseph F. Signorile and Corneliu Luca in Neurorehabilitation and Neural Repair</p
Supplement_Table_2 – Supplemental material for Exercise Guidelines for Gait Function in Parkinson’s Disease: A Systematic Review and Meta-analysis
No full textSupplemental material, Supplement_Table_2 for Exercise Guidelines for Gait Function in Parkinson’s Disease: A Systematic Review and Meta-analysis by Meng Ni, Joseph B. Hazzard, Joseph F. Signorile and Corneliu Luca in Neurorehabilitation and Neural Repair</p
PRISMA_Flow – Supplemental material for Exercise Guidelines for Gait Function in Parkinson’s Disease: A Systematic Review and Meta-analysis
No full textSupplemental material, PRISMA_Flow for Exercise Guidelines for Gait Function in Parkinson’s Disease: A Systematic Review and Meta-analysis by Meng Ni, Joseph B. Hazzard, Joseph F. Signorile and Corneliu Luca in Neurorehabilitation and Neural Repair</p
sj-pdf-1-ajs-10.1177_03635465231152899 – Supplemental material for The Associations Between Quadriceps Tendon Graft Thickness and Isokinetic Performance
No full textSupplemental material, sj-pdf-1-ajs-10.1177_03635465231152899 for The Associations Between Quadriceps Tendon Graft Thickness and Isokinetic Performance by Michael I. Letter, Rosalia L. Parrino, Will Adams, Zachary Ripic, Michael G. Baraga, Lee D. Kaplan, Tanner Harrah, Julien Tremblay, Dylan Luxenburg, Joseph Conti and Joseph F. Signorile in The American Journal of Sports Medicine</p
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Bending the aging curve the complete exercise guide for older adults
No full textBending the Aging Curve provides fitness professionals with a multifaceted periodized training program specifically for older adults. With this book and DVD package, you will find the tools you need to help your clients slow the physical decline that can accompany aging. This one-of-a-kind resource presents a scientifically substantiated and practically proven training system that can extend the vitality of our aging population. Dr. Signorile offers an engaging explanation of the research behind his exercise diagnosis and prescription model while maintaining a focus on the practical components of program design. You will learn to use tests to diagnose your clients' needs and then prescribe training cycles with the appropriate mix of work, active recovery, and skill practice to maximize functional improvements.--[book cover
Modification in the rate of ATP hydrolysis due to activity-specific training measured at varying hydrogen ion concentrations in rat skeletal muscle
No full textAthletic performance relies heavily on the rate of ATP hydrolysis. Traditionally, the accumulation of lactate and the consequent decline in pH within skeletal muscle during intense exercise are factors regarded as contributory to a reduction in the rate of ATPase activity. This phenomena can lead to the development of muscular fatigue. However, utilization of high-intensity training techniques appears to be effective in attenuating the decline in enzymatic function seen with decreases of intracellular pH.Thirty adult female Sprague-Dawley rats, approximately 50 days old, were randomly placed in either a sprint-training (n = 10), endurance-training (n = 10) or sedentary control group (n = 10). Each training condition was 10 weeks in duration. At the completion of training, the rats were sacrificed and the gastrocnemius and soleus muscles were removed. Muscle fibers were isolated from each muscle and stripped of their sarcolemma and sarcoplasmic reticulum using 1% triton X-100. The skinned muscle fibers were analyzed for ATPase activity at pH levels of 6.5, 7.0, and 7.5 using a fluorescence technique. Analysis of variance tests were performed on the data to evaluate differences in ATPase activity for each training condition at each pH as unique observations. Duncan's multiple range post hoc tests were used to identify any statistical differences.The ATPase activity of the sprint-trained rat gastrocnemius muscle increased significantly as pH declined (p < .05). Adenosine triphosphatase activity was also significantly greater (p < .05) at a pH of 6.5 for the sprint-trained animals than for any pH level in the endurance-trained and control rats. The soleus muscle of the sprint-trained rats showed similar results with its greatest ATPase activity at a pH of 6.5 (p < .05). Additionally, the ATPase at pH = 6.5 for the sprint-trained group was significantly higher (p < .05) than the ATPase activity of the endurance-trained and control group soleus muscle at a pH of 7.5. These data support the hypothesis that enzymatic activity can be modified to adapt to the disturbances in internal environment dictated by specific training patterns. They also present one mechanism that may account for the ability of the sprint athlete to maintain power outputs at hydrogen ion concentrations which would be exhaustive to endurance-trained or sedentary individuals.</p
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Modification in the rate of ATP hydrolysis due to activity-specific training measured at varying hydrogen ion concentrations in rat skeletal muscle
No full textAthletic performance relies heavily on the rate of ATP hydrolysis. Traditionally, the accumulation of lactate and the consequent decline in pH within skeletal muscle during intense exercise are factors regarded as contributory to a reduction in the rate of ATPase activity. This phenomena can lead to the development of muscular fatigue. However, utilization of high-intensity training techniques appears to be effective in attenuating the decline in enzymatic function seen with decreases of intracellular pH.Thirty adult female Sprague-Dawley rats, approximately 50 days old, were randomly placed in either a sprint-training (n = 10), endurance-training (n = 10) or sedentary control group (n = 10). Each training condition was 10 weeks in duration. At the completion of training, the rats were sacrificed and the gastrocnemius and soleus muscles were removed. Muscle fibers were isolated from each muscle and stripped of their sarcolemma and sarcoplasmic reticulum using 1% triton X-100. The skinned muscle fibers were analyzed for ATPase activity at pH levels of 6.5, 7.0, and 7.5 using a fluorescence technique. Analysis of variance tests were performed on the data to evaluate differences in ATPase activity for each training condition at each pH as unique observations. Duncan's multiple range post hoc tests were used to identify any statistical differences.The ATPase activity of the sprint-trained rat gastrocnemius muscle increased significantly as pH declined (p < .05). Adenosine triphosphatase activity was also significantly greater (p < .05) at a pH of 6.5 for the sprint-trained animals than for any pH level in the endurance-trained and control rats. The soleus muscle of the sprint-trained rats showed similar results with its greatest ATPase activity at a pH of 6.5 (p < .05). Additionally, the ATPase at pH = 6.5 for the sprint-trained group was significantly higher (p < .05) than the ATPase activity of the endurance-trained and control group soleus muscle at a pH of 7.5. These data support the hypothesis that enzymatic activity can be modified to adapt to the disturbances in internal environment dictated by specific training patterns. They also present one mechanism that may account for the ability of the sprint athlete to maintain power outputs at hydrogen ion concentrations which would be exhaustive to endurance-trained or sedentary individuals.</p
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The effects of an 8-week active-assisted flexibility program on measures of functionality, mobility, power, and range of motion in elderly persons
No full textThe benefits of exercise have been well established in many population samples. Among the most important segments of our population requiring innovative and effective exercise training methods is the rapidly growing elderly population. A primary goal when prescribing exercise for this population is to reduce the incidence of dependence and disability. The purpose of this study was to determine if an 8-week active-assisted flexibility training program could significantly improve measures of functionality, mobility, power, and range of motion (ROM) in a group of residents living in an extended care facility. Seventeen participants (4 male, 13 female) over the age of 70 (mean age 88.8 +/- 5.36 years) volunteered to participate in this study. The experimental group performed 10 different active-assisted stretches twice a week for 8 weeks. Functional data were collected prior to and following the training period. Flexibility data were collected every 2 weeks to track changes in ROM over time. Data were analyzed using a repeated measures ANCOVA with the pretest scores used as the covariate. The experimental group demonstrated significant differences in all measurements after the training was completed. Time course data showed significant improvements on all ROM measures by the last testing session and in half of the measures by the fourth week of training. These results suggest that an 8-week active-assisted flexibility training program is an effective method for reducing the impact of aging and for maintaining functionality in elderly persons.</p
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Leg Press and Chest Press Power Normative Values by Half Decade in Older Women
No full textParrino, RL, Martinez, KJ, Konlian, JA, Conti, JM, and Signorile, JF. Leg press and chest press power normative values by half decade in older women. J Strength Cond Res 38(5): 991-998, 2024-Neuromuscular power is essential for the performance of most activities of daily living and the maintenance of functional independence throughout the aging process. Power declines rapidly in later life; however, this decline may be reduced or delayed with early detection and intervention. Therefore, this study provides leg press and chest press power normative values for older women. Women's power data for this analysis included 229 participants, 60-90 years of age. Power testing was conducted on Keiser A420 pneumatic leg press and chest press machines following a standardized protocol. Data were stratified into half-decade age groups and analyzed using a 1-way ANOVA. Descriptive statistics and quartile rankings are reported, and significant differences between age groups are outlined. There were significant differences in absolute and relative leg press peak power between the age groups (p < 0.05). However, there were no significant differences in absolute or relative chest press peak power between the age groups. This research established normative values and quartile rankings for leg press and chest press power in older women 60-90 years of age, allowing comparative evaluations with patients and subjects by clinicians and researchers, respectively. These values should improve exercise interventions designed to improve power production by providing assessments of subjects' current status and allowing comprehensive monitoring of progress
Prediction of Anaerobic Power From Standing Long Jump in NCAA Division IA Football Players
No full textMann, JB, Bird, M, Signorile, JF, Brechue, WF, and Mayhew, JL. Prediction of anaerobic power from standing long jump in NCAA Division IA football players. J Strength Cond Res XX(X): 000-000, 2021-Despite the popularity of the standing long jump (SLJ), limited research has explored the estimation of power developed during this test. The purpose of this study was to determine SLJ power from jump distance and selected anthropometric measures in NCAA Division IA football players. Height (Ht), body mass (Wt), thigh length, and lower leg length (LL) were measured in 58 players, allowing calculation of leg ratios of thigh length·Ht-1, LL·Ht-1, and TL·SL-1. Players performed 2-3 maximal familiarization trials of SLJ followed by 2 maximal jumps from a 3-dimension force plate sampling at 1,000 Hz. Standing long jump distance (intraclass correlation coefficient [ICC] = 0.944) and power (ICC = 0.926) calculated from resultant force and velocity vectors were highly reliable. Standing Ht (r = 0.40), Wt (r = 0.36), lower leg length (r = 0.43), total leg length (thigh + LLs) (r = 0.38), and best SLJ (r = 0.52) were significantly related (p < 0.05) to peak power, but none accounted for more than 27% of the common variance. Step-wise multiple regression identified SLJ and body mass as the only significant variables necessary to predict peak power (Power [W] = 32.49·SLJ [cm] + 39.69·Wt [kg] - 7,608, R = 0.86, SEE = 488 W, CV% = 9.3%). Standing long jump contributed 56.8% to the known variance, whereas Wt contributed 43.2%. Thus, a combination of SLJ and Wt can be used to effectively estimate explosive power in Division IA college football players
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