Maximum Strength-Power-Performance Relationships in Collegiate Throwers

Stone, Michael H.; SANBORN, KIM; OʼBryant, Harold S.; Hartman, Michael A.; STONE, MARGARET E.; PROULX, CHRIS; WARD, BARRYMORE; HRUBY, JOE

doi:10.1519/00124278-200311000-00019

Cited by 76 publications

(113 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Research has identified estrogen as being important to the homeostasis of many musculoskeletal tissues. 35 Tendon has been found to contain estrogen receptors that are responsive to female sex hormones, 36,37 and it has been suggested that circulating hormonal factors such as estrogen and/or progesterone could affect tendon stiffness. 38 This has been supported by evidence showing that lower limb musculotendinous stiffness varies considerably over the course of the menstrual cycle.…”

Section: Discussionmentioning

confidence: 99%

Tendon structural and mechanical properties do not differ between genders in a healthy community‐dwelling elderly population

Burgess

Pearson

Breen

et al. 2009

Journal Orthopaedic Research

View full text Add to dashboard Cite

Elderly women are reportedly at higher risk of falling than their male counterparts. Postural balance is highly associated with fall risk and is also correlated with tendon structural and mechanical properties. Gender differences in tendon properties could partly explain the discrepancy in fall risk. Thus the purpose of this study was to investigate the possible gender difference in tendon properties in the elderly. The properties of the patellar tendon of 55 elderly (men n ¼ 27, aged 72 AE 1 years, women n ¼ 28, aged 70 AE 1 years) participants were tested. Tendon stiffness (K), length (L), and cross-sectional area (CSA) were measured using B-mode ultrasonography, dynamometry, and electromyography during ramped isometric knee extensions. There were no significant differences ( p > 0.05) between men and women in tendon stiffness (elderly men 550.9 AE 29.2 vs. women 502.9 AE 44.9 Nmm À1 ) or in Young's modulus (elderly men 0.32 AE 0.02 vs. women 0.36 AE 0.04 GPa). This elderly group had similar tendon structural and mechanical properties. The comparable characteristics in genderspecific tendon properties in an elderly population exhibiting similar lifestyle characteristics to the current sample may not explain the reports in the literature regarding increased fall risk in elderly women relative to that seen in men of a similar age. Keywords: aging; gender differences; patellar tendon; stiffness; Young's modulusIn the last 30 years the proportion of the population aged 65 years or more has increased to 16% in the UK and this increase is set to continue (The Office for National Statistics, 2006). Approximately one-third of people aged over 65 fall at least once a year, and about half of these do so recurrently, leading to injury and subsequent decrease in quality of life, and in many cases death. 1 Elderly women exhibit a higher risk of falling than their male counterparts, 2,3 and most falls occur after a loss of stability in a forward direction such as tripping while walking. 2 In order to maintain balance individuals require information concerning the orientation of the body in space and the geometry of the body. In humans this information is obtained via the complex interactions of sensory systems (primarily the somatosensory, visual, and vestibular systems) and motor systems. 4 Aging results in a decline in the function of these systems and their interaction, which has been related to reduced balance ability and thus increased fall risk. [5][6][7]

show abstract

Section: Discussionmentioning

confidence: 99%

Tendon structural and mechanical properties do not differ between genders in a healthy community‐dwelling elderly population

Burgess

Pearson

Breen

et al. 2009

Journal Orthopaedic Research

View full text Add to dashboard Cite

show abstract

“…Such exercises are used due to the similarities to sport-specific movements, as the exercises provide the opportunity to apply maximum force over a small period of time via triple extension of the ankles, knees and hips. 1,2 Similarly, Canavan, Garrett and Armstrong reported kinetic similarities during the propulsive phase of jumping and the Olympic lifts. 3 Moreover, Tricoli et al 4 found that a weightlifting exercise program containing the power clean and its variations improved 10 m sprint and counter-movement jump performance.…”

Section: Introductionmentioning

confidence: 93%

A comparison of maximal power clean performances performed from the floor, knee and mid-thigh

Kelly¹,

McMahon²,

Comfort³

2014

Journal of Trainology

View full text Add to dashboard Cite

Objectives: This study aimed to compare one repetition maximum (1RM) power clean performances, performed from the floor, the knee and from mid-thigh, to determine the differences between variations. Design and Methods: Using a within subjects repeated measures design, healthy male subjects (n=12; height 1.83 ± 0.08 m; body mass 92.17 ± 13.18 kg; age 21 ± 3.69 years), performed each variation of the power clean on two separate occasions to determine reliability of each assessment. A repeated measures ANOVA with Bonferroni post hoc analysis was used to compare performances between each variation. Conclusion:From the findings of this study, when maximal load is required, the power clean from the floor permits the use of the greatest load, which can be used to predict the 1RM of the other variations. Moreover, when determining changes in performance in each variation of the lift, changes ≥6.14%, ≥7.18% and ≥7.66% for the power clean, power clean from the knee and power clean from mid-thigh, respectively, can be considered meaningful changes.(Journal of Trainology 2014;3:53-56)

show abstract

“…As a consequence, this exercise and a selection of variants have been subjected to research. For example, training studies have measured the impact of barbell squat loading schemes (14) on selected training adaptations including maximal strength (30) and power changes in the squat (29,31,14,18,2). Squat exercise training adaptations and their impact on a variety of performance parameters, in particular countermovement jump, acceleration and running speed (7,34) have also been reported.…”

Section: Introductionmentioning

confidence: 99%