INFLUENCE OF DIFFERENT RELATIVE INTENSITIES ON POWER OUTPUT DURING THE HANG POWER CLEAN: IDENTIFICATION OF THE OPTIMAL LOAD

The influence of different relative intensities on power output was investigated in the present study in order to identify the optimal load that maximizes power output during the hang power clean. Fifteen men (age: 22.1 ± 2.0 years, height: 180.1 ± 6.3 cm, and body mass: 89.4 ± 14.7 kg) performed the hang power cleans on a forceplate at 30–90% of one repetition maximum (1RM). Peak power was maximized at 70% 1RM, which was, however, not significantly different from peak power at 50, 60, 80, and 90% 1RM. Average power also was maximized at 70% 1RM, which was not significantly different from average power at 40, 50, 60, 80, and 90% 1RM. It was concluded that (a) the relative intensity had a significant influence on power output, and (b) power output can be maximized at a submaximal load during the hang power clean.

[1]  M. Kaneko,et al.  Training effect of different loads on thd force-velocity relationship and mechanical power output in human muscle , 1983 .

[2]  Naoki Kawamori,et al.  The Optimal Training Load for the Development of Muscular Power , 2004, Journal of strength and conditioning research.

[3]  R. Newton,et al.  Developing Explosive Muscular Power: Implications for a Mixed Methods Training Strategy , 1994 .

[4]  Gregory J. Wilson,et al.  Isometric Assessment of Muscular Function: The Effect of Joint Angle , 1995 .

[5]  Aron J. Murphy,et al.  Poor correlations between isometric tests and dynamic performance: relationship to muscle activation , 2006, European Journal of Applied Physiology and Occupational Physiology.

[6]  G. Sleivert,et al.  The relationship between maximal jump-squat power and sprint acceleration in athletes , 2003, European Journal of Applied Physiology.

[7]  Jonathan Bean,et al.  High‐Velocity Resistance Training Increases Skeletal Muscle Peak Power in Older Women , 2002, Journal of the American Geriatrics Society.

[8]  A. Murphy,et al.  Use of the iso-inertial force mass relationship in the prediction of dynamic human performance , 2004, European Journal of Applied Physiology and Occupational Physiology.

[9]  Aron J. Murphy,et al.  Assessing Dynamic Performance: A Comparison of Rate of Force Development Tests , 1995 .

[10]  M. Stone,et al.  The Effects of 6 Weeks of Creatine Monohydrate Supplementation on Performance Measures and Body Composition in Collegiate Track and Field Athletes , 1999 .

[11]  G. G. Haff,et al.  Effects of Different Set Configurations on Barbell Velocity and Displacement During a Clean Pull , 2003, Journal of strength and conditioning research.

[12]  Warren B. Young,et al.  The Effect of Voluntary Effort to Influence Speed of Contraction on Strength, Muscular Power, and Hypertrophy Development , 1993 .

[13]  Daniel Baker,et al.  Improving Vertical Jump Performance Through General, Special, and Specific Strength Training: A Brief Review , 1996 .

[14]  J T Viitasalo,et al.  Seasonal fluctuations of force production in high jumpers. , 1984, Canadian journal of applied sport sciences. Journal canadien des sciences appliquees au sport.

[15]  D. Baker,et al.  The Load That Maximizes the Average Mechanical Power Output During Explosive Bench Press Throws in Highly Trained Athletes , 2001, Journal of strength and conditioning research.

[16]  Paavo V. Komi,et al.  A simple method for measurement of mechanical power in jumping , 2004, European Journal of Applied Physiology and Occupational Physiology.

[17]  A S Jackson,et al.  Generalized equations for predicting body density of men , 1978, British Journal of Nutrition.

[18]  S. Holm.  A Simple Sequentially Rejective Multiple Test Procedure , 1979 .

[19]  B. Schilling,et al.  Power and Maximum Strength Relationships During Performance of Dynamic and Static Weighted Jumps , 2003, Journal of strength and conditioning research.

[20]  William J. Kraemer,et al.  Influence of load and stretch shortening cycle on the kinematics, kinetics and muscle activation that occurs during explosive upper-body movements , 1997, European Journal of Applied Physiology and Occupational Physiology.

[21]  Robert J. Gregor,et al.  Propulsion Forces as a Function of Intensity for Weightlifting and Vertical Jumping , 1992 .

[22]  M. Rosenstein,et al.  The effects of arms and countermovement on vertical jumping. , 1990, Medicine and science in sports and exercise.

[23]  R M Enoka,et al.  The pull in olympic weightlifting. , 1979, Medicine and science in sports.

[24]  J. Clasey,et al.  The effect of the rate of muscle contraction on the force-time curve parameters of male and female subjects. , 1990, Research Quarterly for Exercise and Sport.

[25]  K. Hainaut,et al.  Isometric or dynamic training: differential effects on mechanical properties of a human muscle. , 1984, Journal of applied physiology: respiratory, environmental and exercise physiology.

[26]  P. Lachenbruch.  Statistical Power Analysis for the Behavioral Sciences (2nd ed.) , 1989 .

[27]  Peter N. Frykman,et al.  Estimation of Human Power Output from Vertical Jump , 1991 .

[28]  J. Garhammer.  A Review of Power Output Studies of Olympic and Powerlifting: Methodology, Performance Prediction, and Evaluation Tests , 1993 .

[29]  R. Staron,et al.  Human Muscle Power Output During Upper‐and Lower‐Body Exercises , 2002, Journal of strength and conditioning research.

[30]  R. Fielding,et al.  Leg power in young women: relationship to body composition, strength, and function. , 1996, Medicine and science in sports and exercise.

[31]  Michael H. Stone,et al.  Training Principles: Evaluation of Modes and Methods of Resistance Training , 2000 .

[32]  D. Baker.  Acute and Long‐Term Power Responses to Power Training: Observations on the Training of an Elite Power Athlete , 2001 .

[33]  A. Macaluso,et al.  Comparison between young and older women in explosive power output and its determinants during a single leg-press action after optimisation of load , 2003, European Journal of Applied Physiology.

[34]  W. Young,et al.  Relationship between strength qualities and sprinting performance. , 1995, The Journal of sports medicine and physical fitness.

[35]  Slobodan Jaric,et al.  Muscle strength testing: evaluation of tests of explosive force production , 2004, European Journal of Applied Physiology.

[36]  D. Baker,et al.  The Load That Maximizes the Average Mechanical Power Output During Jump Squats in Power‐Trained Athletes , 2001, Journal of strength and conditioning research.

[37]  Samuele M. Marcora,et al.  The effect of knee angle on the external validity of isometric measures of lower body neuromuscular function , 2000, Journal of sports sciences.

[38]  R U Newton,et al.  The optimal training load for the development of dynamic athletic performance. , 1993, Medicine and science in sports and exercise.

[39]  W. Siri.  Body composition from fluid spaces and density: analysis of methods. 1961. , 1993, Nutrition.

[40]  Mikel Izquierdo,et al.  Effects of long-term training specificity on maximal strength and power of the upper and lower extremities in athletes from different sports , 2002, European Journal of Applied Physiology.

[41]  Michael H. Stone,et al.  Weight Training: A Scientific Approach , 1986 .

[42]  Jacob Cohen.  Statistical Power Analysis for the Behavioral Sciences , 1969, The SAGE Encyclopedia of Research Design.

[43]  J Cronin,et al.  Developing explosive power: a comparison of technique and training. , 2001, Journal of science and medicine in sport.

[44]  D. Baker,et al.  A Series of Studies on the Training of High‐Intensity Muscle Power in Rugby League Football Players , 2001, Journal of strength and conditioning research.

[45]  NÄ A.ZUÂ,et al.  Maximal strength and power characteristics in isometric and dynamic actions of the upper and lower extremities in middle-aged and older men , 1999 .

[46]  Michael H. Stone,et al.  Force‐Time Dependent Characteristics of Dynamic and Isometric Muscle Actions , 1997 .