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Articles 1 - 12 of 12
Full-Text Articles in Medicine and Health Sciences
Strength Gains: Block Versus Daily Undulating Periodization Weight Training Among Track And Field Athletes, Keith Painter, Guy Haff, Michael Ramsey, Jeff Mcbride, Travise Triplett, William Sands, Hugh Lamont, Margaret Stone, Michael Stone
Strength Gains: Block Versus Daily Undulating Periodization Weight Training Among Track And Field Athletes, Keith Painter, Guy Haff, Michael Ramsey, Jeff Mcbride, Travise Triplett, William Sands, Hugh Lamont, Margaret Stone, Michael Stone
Greg Haff
Recently, the comparison of "periodized" strength training methods has been a focus of both exercise and sport science. Daily undulating periodization (DUP), using daily alterations in repetitions, has been developed and touted as a superior method of training, while block forms of programming for periodization have been questioned. Therefore, the purpose of this study is to compare block to DUP in Division I track and field athletes. Thirty-one athletes were assigned to either a 10-wk block or DUP training group in which sex, year, and event were matched. Over the course of the study, there were 4 testing sessions, which …
Peak Force And Rate Of Force Development During Isometric And Dynamic Mid-Thigh Clean Pulls Performed At Various Intensities, Naoki Kawamori, Steven Rossi, Blake Justice, Erin Haff, Emido Pistilli, Harold O'Bryant, Michael Stone, Gregory Haff
Peak Force And Rate Of Force Development During Isometric And Dynamic Mid-Thigh Clean Pulls Performed At Various Intensities, Naoki Kawamori, Steven Rossi, Blake Justice, Erin Haff, Emido Pistilli, Harold O'Bryant, Michael Stone, Gregory Haff
Greg Haff
Eight male collegiate weightlifters (age: 21.2 +/- 0.9 years; height: 177.6 +/- 2.3 cm; and body mass: 85.1 +/- 3.3 kg) participated in this study to compare isometric to dynamic force-time dependent variables. Subjects performed the isometric and dynamic mid-thigh clean pulls at 30-120% of their one repetition maximum (1RM) power clean (118.4 +/- 5.5 kg) on a 61 X 121.9-cm AMTI forceplate. Variables such as peak force (PF) and peak rate of force development (PRFD) were calculated and were compared between isometric and dynamic conditions. The relationships between force-time dependent variables and vertical jump performances also were examined. The …
Maximum Strength And Strength Training - A Relationship To Endurance?, Michael Stone, William Sands, Kyle Pierce, Robert Newton, G Haff, Jon Carlock
Maximum Strength And Strength Training - A Relationship To Endurance?, Michael Stone, William Sands, Kyle Pierce, Robert Newton, G Haff, Jon Carlock
Greg Haff
Endurance can be defined as the ability to maintain or to repeat a given force or power output. The sport performance-endurance relationship is a multi-factorial concept. However, evidence indicates that maximum strength is a major component. Conceptually, endurance is a continuum. The literature indicates that (a) maximum strength is moderately to strongly related to endurance capabilities and associated factors, a relationship that is likely stronger for high intensity exercise endurance (HIEE) activities than for low intensity exercise endurance (LIEE); (b) strength training can increase both HIEE and LIEE, the effect being greater for HIEE; (c) the volume of strength training …
Periodization Of Training, Guy Haff
Use Of Stability Balls In Strength And Conditioning, L Landow, Guy Haff
Use Of Stability Balls In Strength And Conditioning, L Landow, Guy Haff
Greg Haff
The use of stability ball training is controversial. Two authors below give opposing views as to the use of this training modality.
The Relationship Between Isometric Force-Time Curve Characteristics And Club Head Speed In Recreational Golfers, Brian K. Leary, Jason Statler, Brent Hopkins, Rachel Fitzwater, Tucker Kesling, Jacob Lyon, Brent Phillips, Randall Bryner, Prue Cormie, Guy Haff
The Relationship Between Isometric Force-Time Curve Characteristics And Club Head Speed In Recreational Golfers, Brian K. Leary, Jason Statler, Brent Hopkins, Rachel Fitzwater, Tucker Kesling, Jacob Lyon, Brent Phillips, Randall Bryner, Prue Cormie, Guy Haff
Greg Haff
The relationship between isometric force-time curve characteristics and club head speed in recreational golfers. J Strength Cond Res 26(10): 2685-2697, 2012-The primary purpose of the present investigation was to examine the relationships between club head speed, isometric midthigh pull performance, and vertical jump performance in a cohort of recreational golfers. Twelve recreational golfers (age, 20.4 ± 1.0 years; weight, 77.0 ± 9.8 kg; height, 177.8 ± 6.3 cm; body fat, 17.1 ± 7.6%; handicap, 14.5 ± 7.3; experience, 8.9 ± 3.6 years) completed 3 testing sessions: (a) familiarization session and body composition measurements; (b) measurement of forcetime curves in the …
Resistance Training For Endurance Sports, Guy Haff, Stephanie Burgess
Resistance Training For Endurance Sports, Guy Haff, Stephanie Burgess
Greg Haff
Not available
Isometric Strength Of Powerlifters In Key Position Of The Conventional Deadlift, George Beckham, Hugh Lamont, Kimitake Sato, Michael Ramsey, Guy Haff, Michael Stone
Isometric Strength Of Powerlifters In Key Position Of The Conventional Deadlift, George Beckham, Hugh Lamont, Kimitake Sato, Michael Ramsey, Guy Haff, Michael Stone
Greg Haff
Objectives: To determine if force differences exist between isometric pulling positions corresponding to key positions of the deadlift. Design: Cross-sectional evaluation of isometric strength Methods: 14 powerlifters performed isometric pulls on a force plate at 3 key positions related to the deadlift (at the floor, just above the patella, and 5-6 cm short of lockout) and in the mid thigh pull position (MTP). A 1x4 repeated measures ANOVA was used to ascertain differences between the various pulling positions tested. Bonferroni-adjusted paired samples t-tests were used post-hoc. Results: Forces generated at each bar height were significantly different (F(3,39) = 51.058, p<0.05, η2=0.80). Paired samples t-tests showed significant differences between positions, revealing a trend of greater force generation at increasing heights for positions corresponding to the deadlift. Force generated in the mid thigh pull position was significantly higher than any other position. Conclusion: In positions corresponding to the deadlift, force generation increases at higher bar heights.
Training Integration And Periodization, Guy Haff, Erin Haff
The Acute Effects Of Moderately Loaded Concentric-Only Quarter Squats On Vertical Jump Performance, Aaron Crum, Naoki Kawamori, Michael Stone, Guy Haff
The Acute Effects Of Moderately Loaded Concentric-Only Quarter Squats On Vertical Jump Performance, Aaron Crum, Naoki Kawamori, Michael Stone, Guy Haff
Greg Haff
2012-Limited research exists examining the effect of moderately loaded conditioning activities that are employed as part of a strength-power potentiating complex (SPPC). Additionally, no studies to date have explored the effects of using a concentric-only quarter back squat protocol as part of an SPPC. Therefore, the purpose of this study was to examine the effects of a moderately loaded (50-65% of 1RM) concentric-only quarter back squat protocol on the occurrence of potentiation effects at various time points. Twenty men who could quarter back squat a minimum of 2.4 times their body mass (3.7 ±: 0.7 kg-per body mass) participated in …
Training Principles For Power, Guy Haff, Sophia Nimphius
Training Principles For Power, Guy Haff, Sophia Nimphius
Greg Haff
The ability to express high power outputs is considered to be one of the foundational characteristics underlying successful performance in a variety of sporting activities, including jumping, throwing, and changing direction. Numerous training interventions have been recommended to enhance the athlete's ability to express high power outputs and improve their overall sports performance capacity. This brief review examines the factors that underlie the expression of power and various methods that can be used to maximize power development.
Current Research: Training For Strength, Power, And Speed, Greg Haff
Current Research: Training For Strength, Power, And Speed, Greg Haff
Greg Haff
summary: this research brief covers concurrent strength and endurance training in elite soccer players, the effect of hypertrophy training protocols with maximal loading on neural drive, the effect of cluster sets on power in jump squats, and the effect of age on repeated-sprint ability in youth soccer players