abstract：:The purpose of this study was to describe the physiological profile of responders (>20 mmol.kg(-1) dry weight [dw] increase in total intramuscular creatine monohydrate [Cr] + phosphorylated creatine [PCr]) versus nonresponders (<10 mmol.kg(-1) dw increase) to a 5-day Cr load (0.3 g.kg(-1).d(-1)) in 11 healthy men (mea...

journal_title：Journal of strength and conditioning research

authors： Syrotuik DG,Bell GJ

更新日期：2004-08-01 00:00:00

abstract：:The primary aim of this study was to determine reliability and factorial validity of squat (SJ) and countermovement jump (CMJ) tests. The secondary aim was to compare 3 popular methods for the estimation of vertical jumping height. Physical education students (n = 93) performed 7 explosive power tests: 5 different ver...

journal_title：Journal of strength and conditioning research

authors： Markovic G,Dizdar D,Jukic I,Cardinale M

更新日期：2004-08-01 00:00:00

abstract：:The purpose of the present study was to assess the reliability and validity of fatigue measures, as derived from 4 separate formulae, during tests of repeat sprint ability. On separate days over a 3-week period, 2 groups of 7 recreationally active men completed 6 trials of 1 of 2 maximal (20 x 5 seconds) intermittent ...

journal_title：Journal of strength and conditioning research

authors： Glaister M,Stone MH,Stewart AM,Hughes M,Moir GL

更新日期：2004-08-01 00:00:00

abstract：:Muscular power is considered one of the main determinants of athletic performance that require the explosive production of force such as throwing and jumping. Various training methods have been suggested to improve muscular power and dynamic athletic performance. Although various acute training valuables (e.g., sets, ...

journal_title：Journal of strength and conditioning research

authors： Kawamori N,Haff GG

更新日期：2004-08-01 00:00:00

abstract：:The nature of multiple sprint sports such as soccer, hockey, and rugby is such that deceleration plays an important part in the movement patterns of players during a game and training. The purpose of this study was to investigate the effect of deceleration on fatigue during repeated sprint efforts. A group of 18 elite...

journal_title：Journal of strength and conditioning research

authors： Lakomy J,Haydon DT

更新日期：2004-08-01 00:00:00

abstract：:The purpose of the present study was to examine the influence of direct supervision on muscular strength, power, and running speed during 12 weeks of resistance training in young rugby league players. Two matched groups of young (16.7 +/- 1.1 years [mean +/- SD]), talented rugby league players completed the same perio...

journal_title：Journal of strength and conditioning research

authors： Coutts AJ,Murphy AJ,Dascombe BJ

更新日期：2004-05-01 00:00:00

abstract：:The effect of consuming meals of different macronutrient content on substrate oxidation following resistance exercise was examined in 9 resistance-trained men (26.2 +/- 2.4 years). Subjects completed 3 resistance exercise bouts of 8 exercises and 1 warm-up set (50% of 10 repetition maximum [RM]), which were followed b...

journal_title：Journal of strength and conditioning research

authors： Bosher KJ,Potteiger JA,Gennings C,Luebbers PE,Shannon KA,Shannon RM

更新日期：2004-05-01 00:00:00

abstract：:This study compared the magnitude of muscle damage induced when consecutive drop jumps (DJs) were performed on sand vs. firm (wood) surfaces from a height of 0.6 m. Eight subjects performed DJs on a sand surface at a depth of 0.2 m (S condition), and 8 other subjects performed DJs on a wood surface (F condition). Each...

journal_title：Journal of strength and conditioning research

authors： Miyama M,Nosaka K

更新日期：2004-05-01 00:00:00

abstract：:The purpose of this study was to determine the effects of carbohydrate refeeding on intermittent sprint exercise, blood lactate response, and mood following a typical weight-reduction program practiced by college wrestlers. Fifteen collegiate wrestlers from the University of Northern Iowa completed 3 trials of intermi...

journal_title：Journal of strength and conditioning research

authors： Finn KJ,Dolgener FA,Williams RB

更新日期：2004-05-01 00:00:00

abstract：:The present study examined the impact of physical characteristics of adolescent competitive tennis players (13-18 years) on field tests of tennis performance. Results (n = 33) showed that boys were taller (p = 0.001), possessed greater wingspan (p = 0.030), had greater maximum oxygen consumption (p = 0.001), and perfo...

journal_title：Journal of strength and conditioning research

authors： Perry AC,Wang X,Feldman BB,Ruth T,Signorile J

更新日期：2004-02-01 00:00:00

abstract：:Anaerobic exercise is involved in many recreational and competitive sport activities. This study first established regression equations to predict maximal anaerobic power and then cross-validated these prediction equations. Using stepwise multiple regression analysis prediction equations for relative (watts per kilogr...

journal_title：Journal of strength and conditioning research

authors： Mastrangelo MA,Chaloupka EC,Kang J,Lacke CJ,Angelucci J,Martz WP,Biren GB

更新日期：2004-02-01 00:00:00

abstract：:This study surveyed 28 athletes competing at a regional mixed martial arts (MMA) event. The survey attempted to gather information regarding overall training volume, supplement use, and specific exercises used. The survey return rate was 100% (28/28). Twenty-five out of the 28 athletes supplemented their training with...

journal_title：Journal of strength and conditioning research

authors： Amtmann JA

更新日期：2004-02-01 00:00:00

abstract：:The aim of this study was to investigate the current practice of complex training using a lower body combination of exercises. It was hypothesized that a bout of heavy resistance exercise (HRE), as typically used in complex training, would lead to enhanced performance (in the form of counter-movement [CMJ] and drop [D...

journal_title：Journal of strength and conditioning research

authors： Jones P,Lees A

更新日期：2003-11-01 00:00:00

abstract：UNLABELLED:Some recommendations suggest keeping the shank as vertical as possible during the barbell squat, thus keeping the knees from moving past the toes. This study examined joint kinetics occurring when forward displacement of the knees is restricted vs. when such movement is not restricted. Seven weight-trained m...

journal_title：Journal of strength and conditioning research

authors： Fry AC,Smith JC,Schilling BK

更新日期：2003-11-01 00:00:00

abstract：:Special training methods in wrestling have been assumed to improve the stability and tolerance of the neck. The aim of this study was to measure the neck strength levels reached in an extremely physically demanding sport. A neck strength measurement system was used to measure various parameters of maximal isometric ne...

journal_title：Journal of strength and conditioning research

authors： Ylinen JJ,Julin M,Rezasoltani A,Virtapohja H,Kautiainen H,Karila T,Mälkiä E

更新日期：2003-11-01 00:00:00

abstract：:The purpose of this study was to compare the abdominal muscle activity elicited while using 4 portable abdominal training devices vs. a traditional crunch. Thirty-three adults participated in this study. The exercise devices tested included the Ab Roller Plus, Torso Track 2, AB-DOer Pro, and the Perfect Abs. All subje...

journal_title：Journal of strength and conditioning research

authors： Sternlicht E,Rugg S

更新日期：2003-08-01 00:00:00

abstract：:The purpose of this study was to compare the variability and accuracy of proximal and traditional distal electrode placement to estimate body composition in obese adults. Fifty-two obese men and women had a mean age of 37 years and an average body mass index (BMI) of 30.6 kg.m(-2). Body composition was measured using ...

journal_title：Journal of strength and conditioning research

authors： Franckowiak SC,Fontaine K,Andersen RE

更新日期：2003-08-01 00:00:00

abstract：:Cardio kickboxing classes have become a popular form of exercise to enhance fitness. This study surveyed kickboxing participants and instructors to ascertain the severity, type, and incidence of injuries sustained while performing cardio kickboxing exercise. The respondents consisted of 77.4% instructors and 29.3% par...

journal_title：Journal of strength and conditioning research

authors： Romaine LJ,Davis SE,Casebolt K,Harrison KA

更新日期：2003-08-01 00:00:00

abstract：:The purpose of this study was to examine the effects of amino acid supplementation on muscular strength, power, and high-intensity endurance during short-term resistance training overreaching. Seventeen resistance-trained men were randomly assigned to either an amino acid (AA) or placebo (P) group and underwent 4 week...

journal_title：Journal of strength and conditioning research

authors： Ratamess NA,Kraemer WJ,Volek JS,Rubin MR,Gómez AL,French DN,Sharman MJ,McGuigan MM,Scheett T,Häkkinen K,Newton RU,Dioguardi F

更新日期：2003-05-01 00:00:00

abstract：:The purpose of this study was to examine whether substituting 50% of run training volume with cycling ("cross-training") would maintain 3,000-m race time and estimated Vo(2)max in competitive female distance runners during a 5-week recuperative phase. Eleven collegiate runners were randomly assigned to either the run ...

journal_title：Journal of strength and conditioning research

authors： White LJ,Dressendorfer RH,Muller SM,Ferguson MA

更新日期：2003-05-01 00:00:00

abstract：:The purpose of this study was to determine the extent to which scientific research influences college strength and conditioning coaching practices and to determine the training methods utilized. A total of 321 surveys were mailed to Division I strength and conditioning coaches, and the response rate was 42.7% (137 of ...

journal_title：Journal of strength and conditioning research

authors： Durell DL,Pujol TJ,Barnes JT

更新日期：2003-05-01 00:00:00

abstract：:The restorative capacities of a high carbohydrate-protein (CHO-PRO) beverage containing electrolytes and a traditional 6% carbohydrate-electrolyte sports beverage (SB) were assessed after glycogen-depleting exercise. Postexercise ingestion of the CHO-PRO beverage, in comparison with the SB, resulted in a 55% greater t...

journal_title：Journal of strength and conditioning research

authors： Williams M,Raven PB,Fogt DL,Ivy JL

更新日期：2003-02-01 00:00:00

abstract：:In order to compare the cardiovascular and energy expenditure demands of "Super Slow" (SST) and traditional (TT) resistance training 7 resistance-trained young men (24.3 +/- 3.8 years) had energy expenditure (using indirect calorimetry) and heart rate evaluated during and for 15 minutes after a workout on separate day...

journal_title：Journal of strength and conditioning research

authors： Hunter GR,Seelhorst D,Snyder S

更新日期：2003-02-01 00:00:00

abstract：:The purpose of this study was to investigate the force-velocity response of the neuromuscular system to a variety of concentric only, stretch-shorten cycle, and ballistic bench press movements. Twenty-seven men of an athletic background (21.9 +/- 3.1 years, 89.0 +/- 12.5 kg, 86.3 +/- 13.6 kg 1 repetition maximum [1RM]...

journal_title：Journal of strength and conditioning research

authors： Cronin JB,McNair PJ,Marshall RN

更新日期：2003-02-01 00:00:00

abstract：:The purpose of this study was to compare single and multiple sets of weight training for strength gains in recreationally trained individuals. Sixteen men (age = 21 +/- 2.0) were randomly assigned to 1 set (S-1; n = 8) or 3 set (S-3; n = 8) groups and trained 3 days per week for 12 weeks. One repetition maximum (1RM) ...

journal_title：Journal of strength and conditioning research

authors： Rhea MR,Alvar BA,Ball SD,Burkett LN

更新日期：2002-11-01 00:00:00

abstract：:This cross-sectional study investigated the effects of participation in various sports on side-to-side (contralateral) differences in bone mineral density (BMD) of the upper and lower limbs. The BMD of the arms and legs was measured using dual energy X-ray absorptiometry. The subjects were 184 collegiate athletes, bot...

journal_title：Journal of strength and conditioning research

authors： McClanahan BS,Harmon-Clayton K,Ward KD,Klesges RC,Vukadinovich CM,Cantler ED

更新日期：2002-11-01 00:00:00

abstract：:The purpose of this study was to determine if associated characteristics of muscle dysmorphia (MD) were different between elite-level competitive bodybuilders and power lifters. Elite-level competitive bodybuilders (n = 100) and power lifters (n = 68) completed the muscle dysmorphia inventory (MDI) at the time of or i...

journal_title：Journal of strength and conditioning research

authors： Lantz CD,Rhea DJ,Cornelius AE

更新日期：2002-11-01 00:00:00

abstract：:The purpose of this study was to compare shoulder range-of-motion (ROM) and strength values between bodybuilders and nonbodybuilders. Fifty-four men (29 bodybuilders and 25 nonbodybuilders) between the ages of 21 and 34 years participated in the study. Goniometric measurements were used to assess shoulder flexion and ...

journal_title：Journal of strength and conditioning research

authors： Barlow JC,Benjamin BW,Birt P,Hughes CJ

更新日期：2002-08-01 00:00:00

abstract：:This study evaluated the influence of cadence on the Young Men's Christian Association (YMCA) bench press test for predicting 1 repetition maximum (1RM) bench press test performance. Fifty-eight medical students (37 men, 21 women) were evaluated for anthropometric variables (age, height, weight, fat-free mass, and per...

journal_title：Journal of strength and conditioning research

authors： Kim PS,Mayhew JL,Peterson DF

更新日期：2002-08-01 00:00:00

abstract：:The purpose of this investigation was to examine the effects of unilateral, isometric training of the forearm flexors on strength and the mechanomyographic (MMG) and electromyographic (EMG) responses of the biceps brachii in the trained and untrained limb at three joint angles. Seventeen adult females (mean age +/- SD...

journal_title：Journal of strength and conditioning research

authors： Ebersole KT,Housh TJ,Johnson GO,Perry SR,Bull AJ,Cramer JT

更新日期：2002-05-01 00:00:00

abstract：:Conservative management of rotator cuff pathology often involves certain therapeutic exercises. Although a major goal of these exercises is to increase strength of the rotator cuff, little empirical evidence supports this assertion. In this study, 34 nonpathologic young adults were pretested using a LIDO Multijoint II...

journal_title：Journal of strength and conditioning research

authors： Moncrief SA,Lau JD,Gale JR,Scott SA

更新日期：2002-05-01 00:00:00

abstract：:The purpose of this study was to measure the effects of additional eccentric loading on subsequent concentric strength. Eight subjects with some experience in weight training volunteered to perform maximal attempts in the barbell bench press using detaching hooks that allowed them to lower 105% of their concentric 1 r...

journal_title：Journal of strength and conditioning research

authors： Doan BK,Newton RU,Marsit JL,Triplett-McBride NT,Koziris LP,Fry AC,Kraemer WJ

更新日期：2002-02-01 00:00:00

abstract：:Currently, variables predictive of vertical jumping performance can account for only part of its total variability. A potential additional source of variation called explosive strength deficit (ESD) was described in 1995 by Zatsiorsky (Science and Practice of Strength Training. Champaign, IL: Human Kinetics, 1995. pp....

journal_title：Journal of strength and conditioning research

authors： Weiss LW,Fry AC,Relyea GE

更新日期：2002-02-01 00:00:00

abstract：:The purpose of this study was to evaluate the reliability of a new anaerobic athletic performance system. This system is proposed to assess vertical jump height, anaerobic power through repetitive jumping, and reaction to both an auditory and visual stimulus. One hundred twenty-three subjects (92 men and 31 women; mea...

journal_title：Journal of strength and conditioning research

authors： Hoffman JR,Kang J

更新日期：2002-02-01 00:00:00

abstract：:We tested the null hypothesis that creatine monohydrate loading (20 g per day for 7 days, n = 18) would not alter resistance exercise performance, isometric strength, or in vivo contractile properties of the quadriceps femoris muscle compared with loading with placebo (n = 13) in resistance-trained subjects. For the e...

journal_title：Journal of strength and conditioning research

authors： Stevenson SW,Dudley GA

更新日期：2001-11-01 00:00:00

abstract：:The purpose of this study was to determine the relative electromyographic (EMG) activity of the upper and lower rectus abdominis and the external oblique muscles during 5 commonly performed abdominal strengthening exercises. Twenty-five healthy subjects participated in the study. EMG data were collected under isometri...

journal_title：Journal of strength and conditioning research

authors： Willett GM,Hyde JE,Uhrlaub MB,Wendel CL,Karst GM

更新日期：2001-11-01 00:00:00

abstract：:Although different warm-up and flexibility routines are often prescribed before physical activity, little research has been conducted to determine what effects these routines have on athletic performance in activities. The purpose of this investigation was to determine to what degree different warm-up routines affect ...

journal_title：Journal of strength and conditioning research

authors： Church JB,Wiggins MS,Moode FM,Crist R

更新日期：2001-08-01 00:00:00

abstract：:Exercise has been promoted in an attempt to correct postural deviations, such as excessive lumbar lordosis, scoliosis, kyphosis, and abducted scapulae. One of the assumed causes of these conditions is a weak and lengthened agonist muscle group combined with a strong and tight antagonist muscle group. Strengthening and...

journal_title：Journal of strength and conditioning research

authors： Hrysomallis C,Goodman C

更新日期：2001-08-01 00:00:00

abstract：:This study describes the work-rate profile of Italian high-level soccer referees (N = 33). The referees were examined during official games (n = 96) of the 1992-1996 first division Italian championships (Series A). Subjects were all experienced, top-level referees enrolled in the Commissione Arbitri Nazionali and offi...

journal_title：Journal of strength and conditioning research

authors： Dottavio S,Castagna C

更新日期：2001-05-01 00:00:00

abstract：:Fourteen healthy men participated in a study designed to examine the effects of weight-belt use on trunk- and leg-muscle myoelectric activity (EMG) and joint kinematics during the squat exercise. Each subject performed the parallel back squat exercise at a self-selected speed according to his own technique with 90% of...

journal_title：Journal of strength and conditioning research

authors： Zink AJ,Whiting WC,Vincent WJ,McLaine AJ

更新日期：2001-05-01 00:00:00