abstract：:The purpose of this study was to determine the effects of varying intensities of exercise in normoxic and hypoxic environments on selected immune regulation and metabolic responses. Using a within-subjects design, subjects performed maximal tests on a cycle ergometer in both normoxic (PiO2 = 20.94%) and hypoxic (PiO2 ...

journal_title：Journal of strength and conditioning research

authors： Blegen M,Cheatham C,Caine-Bish N,Woolverton C,Marcinkiewicz J,Glickman E

更新日期：2008-09-01 00:00:00

abstract：:Repetitions to fatigue (RTF) using less than a 1 repetition maximum (1RM) load (RepWt) have been shown to be a good predictor of 1RM strength in men, but such information is scarce in women. The purpose of this study was to evaluate the accuracy of current prediction equations to estimate 1RM bench press performance a...

journal_title：Journal of strength and conditioning research

authors： Mayhew JL,Johnson BD,Lamonte MJ,Lauber D,Kemmler W

更新日期：2008-09-01 00:00:00

abstract：:The aim of this study is to evaluate sprinting ability, density of acceleration, and speed dribbling ability of professional soccer players with respect to their positions.A total of 243 professional soccer players were examined. These soccer players are playing in different leagues of Turkey. The F-MARC test battery,...

journal_title：Journal of strength and conditioning research

authors： Taskin H

更新日期：2008-09-01 00:00:00

abstract：:In this study, we evaluated the efficacy of two different dynamic warm-up conditions, one that was inclusive of open skills (i.e., reactive movements) and one that included only preplanned dynamic activities (i.e., closed skills) on the performance of speed, change of direction speed, vertical jump, and reactive agili...

journal_title：Journal of strength and conditioning research

authors： Gabbett TJ,Sheppard JM,Pritchard-Peschek KR,Leveritt MD,Aldred MJ

更新日期：2008-09-01 00:00:00

abstract：:This study assessed muscle fatigue patterns of the elbow flexors in untrained men and women to determine if sex differences exist during acute maximal eccentric exercise. High-intensity eccentric exercise is often used by athletes to elicit gains in muscle strength and size gains. Development of fatigue during this ty...

journal_title：Journal of strength and conditioning research

authors： Hubal MJ,Rubinstein SR,Clarkson PM

更新日期：2008-07-01 00:00:00

abstract：:The purpose of this study was to determine a resting interval between countermovement jumps (i.e., volleyball spikes) that allows the maintenance of maximal jumping performance. Ten male volleyball players (1.85 +/- 0.05 m, 77.2 +/- 10.6 kg, 21.6 +/- 5.3 years) performed 6 experimental jumping sessions. In the first a...

journal_title：Journal of strength and conditioning research

authors： Pereira G,Almeida AG,Rodacki AL,Ugrinowitsch C,Fowler NE,Kokubun E

更新日期：2008-07-01 00:00:00

abstract：:The purpose of the study was to determine whether muscle contraction type (concentric [CON] or eccentric [ECC]) or loading (relative or absolute) has a greater impact on the perceptual and metabolic responses to conventional resistance exercise. Additionally, overall effort, pain sensations, and specific pain descript...

journal_title：Journal of strength and conditioning research

authors： Hollander DB,Kilpatrick MW,Ramadan ZG,Reeves GV,Francois M,Blakeney A,Castracane VD,Kraemer RR

更新日期：2008-07-01 00:00:00

abstract：:The purpose of this study was to compare different methods to identify the lactate threshold (LT) and glucose threshold (GT) on resistance exercise for individuals with type 2 diabetes. Nine men with type 2 diabetes (47.2 +/- 12.4 years, 87.6 +/- 20.0 kg, 174.9 +/- 5.9 cm, and 22.4 +/- 7.2% body fat) performed increme...

journal_title：Journal of strength and conditioning research

authors： Moreira SR,Arsa G,Oliveira HB,Lima LC,Campbell CS,Simões HG

更新日期：2008-07-01 00:00:00

abstract：:The purpose of this study was to examine the influence of the sequence order of high-intensity endurance training and circuit training on changes in muscular strength and anaerobic power. Forty-eight physical education students (ages, 21.4 +/- 1.3 years) were assigned to 1 of 5 groups: no training controls (C, n = 9),...

journal_title：Journal of strength and conditioning research

authors： Chtara M,Chaouachi A,Levin GT,Chaouachi M,Chamari K,Amri M,Laursen PB

更新日期：2008-07-01 00:00:00

abstract：:Athletes spend a much greater proportion of their time recovering than they do in training. Yet, much attention has been given to training with very little investigation of recovery. The purpose of this review is to stimulate further research into this vital area of training. Recovery can be categorized in three terms...

journal_title：Journal of strength and conditioning research

authors： Bishop PA,Jones E,Woods AK

更新日期：2008-05-01 00:00:00

abstract：:The aim of this study was to examine the effect of recovery mode on repeated sprint ability in young basketball players. Sixteen basketball players (age, 16.8 +/- 1.2 years; height, 181.3 +/- 5.7 cm; body mass, 73 +/- 10 kg; VO2max, 59.5 +/- 7.9 mL x kg(-1) x min(-1)) performed in random order over 2 separate occasion...

journal_title：Journal of strength and conditioning research

authors： Castagna C,Abt G,Manzi V,Annino G,Padua E,D'Ottavio S

更新日期：2008-05-01 00:00:00

abstract：:This investigation evaluated the effects of a nutritional supplement (the organic osmolyte betaine) in rehydration solutions, with and without carbohydrate and electrolytes. Ten male runners ((mean +/- SD) age, 20 +/- 2 years; weight, 70.6 +/- 6.8 kg; maximal aerobic power, 63.5 +/- 4.1 mL O2 x kg(-1) x min(-1)) dehyd...

journal_title：Journal of strength and conditioning research

authors： Armstrong LE,Casa DJ,Roti MW,Lee EC,Craig SA,Sutherland JW,Fiala KA,Maresh CM

更新日期：2008-05-01 00:00:00

abstract：:Numerous studies have shown that stretching routines can induce strength and force deficits, although the amount of stretching needed to cause these deficits remains unclear. Therefore, the purpose of the study was to examine the relationship between varying amounts of acute static stretching on jumping performance. B...

journal_title：Journal of strength and conditioning research

authors： Robbins JW,Scheuermann BW

更新日期：2008-05-01 00:00:00

abstract：:It is commonly accepted that vertical jump performance is a good indicator of maximal joint power. Some studies, however, have indicated that knee joint power output in the vertical jump is limited due to forward trunk inclination early in the push-off. The aim of this experimental study was to investigate the effect ...

journal_title：Journal of strength and conditioning research

authors： Vanrenterghem J,Lees A,Clercq DD

更新日期：2008-05-01 00:00:00

abstract：:Recently, a fitness competition called the Pump and Run (PR) has been popularized. Composed of 2 events, a 5-km road race time (RT) in seconds and a maximal-repetition bench press (BPR) with resistance based on a percentage of body mass (M), the final score (RTadj) equals RT - 30(BPR). From published findings, the aut...

journal_title：Journal of strength and conditioning research

authors： Vanderburgh PM,Laubach LL

更新日期：2008-03-01 00:00:00

abstract：:We examined the effects of active dehydration by exercise in a hot, humid environment on anaerobic muscular power using a test-retest (euhydrated and dehydrated) design. Seven subjects (age, 27.1 +/- 4.6 years; mass, 86.4 +/- 9.5 kg) performed upper and lower body Wingate anaerobic tests prior to and after a 1.5-hour ...

journal_title：Journal of strength and conditioning research

authors： Jones LC,Cleary MA,Lopez RM,Zuri RE,Lopez R

更新日期：2008-03-01 00:00:00

abstract：:Various physical demands are placed on soldiers, whose effectiveness and survivability depend on their combat-specific physical fitness. Because sport training programs involving weight-based training have proven effective, this study examined the value of such a program for short-term military training using combat-r...

journal_title：Journal of strength and conditioning research

authors： Harman EA,Gutekunst DJ,Frykman PN,Nindl BC,Alemany JA,Mello RP,Sharp MA

更新日期：2008-03-01 00:00:00

abstract：:Gymnastics is a closed-skill sport, and the repeatability of a specific technique is accepted as a valuable indicator of a performer's level of expertise. The circle movement, defined as a gyrating movement in the horizontal plane, is a key component of all contemporary pommel horse exercises. The aims of this study w...

journal_title：Journal of strength and conditioning research

authors： Baudry L,Seifert L,Leroy D

更新日期：2008-03-01 00:00:00

abstract：:Previous research has shown that static stretching (SS) can diminish the peak force output of stretch-shortening cycle actions while performing a dynamic warm-up (DW) protocol has been shown to enhance performance in similar activities. The purpose of this study was to establish whether the deleterious effects of SS w...

journal_title：Journal of strength and conditioning research

authors： Winchester JB,Nelson AG,Landin D,Young MA,Schexnayder IC

更新日期：2008-01-01 00:00:00

abstract：:Exercise or Swiss balls are increasingly being used with conventional resistance exercises. There is little evidence supporting the efficacy of this approach compared to traditional resistance training on a stable surface. Previous studies have shown that force output may be reduced with no change in muscle electromyo...

journal_title：Journal of strength and conditioning research

authors： Goodman CA,Pearce AJ,Nicholes CJ,Gatt BM,Fairweather IH

更新日期：2008-01-01 00:00:00

abstract：:The purpose of the present study was to investigate the effects of performing heavy back squats (HBS) and heavy front squats (HFS) on the average speed during each 10-m interval of 40-m sprint trials. In a randomized, cross-over design, 10 strength-trained men performed a HBS, HFS, or control treatment before performi...

journal_title：Journal of strength and conditioning research

authors： Yetter M,Moir GL

更新日期：2008-01-01 00:00:00

abstract：:Exercise professionals seeking to develop evidence-based training programs rely on several training principles demonstrated through research and professional experience. In an effort to further research examining these principles, an investigation was designed and completed to evaluate the compatibility of cardiovascu...

journal_title：Journal of strength and conditioning research

authors： Rhea MR,Oliverson JR,Marshall G,Peterson MD,Kenn JG,Ayllón FN

更新日期：2008-01-01 00:00:00

abstract：:The aim of this study was twofold: (i) to describe the criterion-related validity of the sit-and-reach test (SRT) using a hand-held inclinometer when assessing hamstring muscle length (HML) when HML is recorded in degrees of hip joint angle (HJA); and (ii) to describe the effect of gender and age on HML in healthy adu...

journal_title：Journal of strength and conditioning research

authors： Youdas JW,Krause DA,Hollman JH

更新日期：2008-01-01 00:00:00

abstract：:In practice, the Bruce protocol is the most commonly used treadmill protocol to assess maximal oxygen consumption (V(.-)O2max). It has been suggested that a running protocol (e.g., Astrand) may elicit a comparatively higher V(.-)O2max and different cardiorespiratory responses when applied to moderately trained runners...

journal_title：Journal of strength and conditioning research

authors： Miller GS,Dougherty PJ,Green JS,Crouse SF

更新日期：2007-11-01 00:00:00

abstract：:The purpose of the present study was to clarify the acute effect of dynamic stretching exercise on muscular performance during concentric dynamic constant external resistance (DCER, formally called isotonic) muscle actions under various loads. Concentric DCER leg extension power outputs were measured in 12 healthy mal...

journal_title：Journal of strength and conditioning research

authors： Yamaguchi T,Ishii K,Yamanaka M,Yasuda K

更新日期：2007-11-01 00:00:00

abstract：:Despite the emergence of golf-specific training programs and training aids, relatively little research has been conducted examining the physical characteristics that are important to golf performance. We studied the strength, flexibility, and balance characteristics of golfers across 3 proficiency levels based on hand...

journal_title：Journal of strength and conditioning research

authors： Sell TC,Tsai YS,Smoliga JM,Myers JB,Lephart SM

更新日期：2007-11-01 00:00:00

abstract：:In competitive cycling, setting the proper saddle height is important for both performance and injury prevention. This is also true for ergometer use in a laboratory. The cycling literature recommends using a 25 to 35 degrees knee angle to set saddle height for injury prevention and recommends using 109% of inseam len...

journal_title：Journal of strength and conditioning research

authors： Peveler WW,Pounders JD,Bishop PA

更新日期：2007-11-01 00:00:00

abstract：:The purpose of this study was to investigate the hypothesis that a repetitions-to-maximum test is a predicator of a 1 repetition maximum (1RM) performance for evaluating upper and lower body strength in women high school athletes. Fifty-seven high school athletes ages 14-18 participated in this study. All of the parti...

journal_title：Journal of strength and conditioning research

authors： Horvat M,Franklin C,Born D

更新日期：2007-11-01 00:00:00

abstract：:The primary objective of this study was to assess the relationship between aerobic capacity, as measured by the VO(2)max test, and recovery from high-intensity intermittent exercise. Eleven female collegiate hockey players agreed to participate. Subjects skated 5 1-lap intervals around the hockey rink at maximal inten...

journal_title：Journal of strength and conditioning research

authors： Carey DG,Drake MM,Pliego GJ,Raymond RL

更新日期：2007-08-01 00:00:00

abstract：:Specific sequences of muscle coordination exist in movements of every sport. In particular, sports involving repetitive movement patterns such as rowing may rely more heavily on coordinated muscle contraction sequencing in order to produce optimal performance. The aim of this study was to monitor the fatigue patterns ...

journal_title：Journal of strength and conditioning research

authors： So RC,Tse MA,Wong SC

更新日期：2007-08-01 00:00:00

abstract：:The aims of this study were to evaluate the time-course of the familiarization process associated with a test of multiple sprint running performance and to determine the reliability of various performance indices once familiarization had been established. Eleven physically active men (mean age: 21 +/- 2 years) complet...

journal_title：Journal of strength and conditioning research

authors： Glaister M,Howatson G,Lockey RA,Abraham CS,Goodwin JE,McInnes G

更新日期：2007-08-01 00:00:00

abstract：:According to the American College of Sports Medicine (1), there is limited information about when to stretch during an exercise session. The purpose of this study was to determine if the placement of static stretching, either before or after a workout, would affect flexibility in the hip, knee, and ankle. Thirty colle...

journal_title：Journal of strength and conditioning research

authors： Beedle BB,Leydig SN,Carnucci JM

更新日期：2007-08-01 00:00:00

abstract：:This investigation examined the effects of a protease supplement on selected markers of muscle damage and delayed-onset muscle soreness (DOMS). The study used a double-blinded, placebo-controlled, crossover design. Twenty men (mean +/- SD age = 21.0 +/- 3.1 years) were randomly assigned to either a supplement group (S...

journal_title：Journal of strength and conditioning research

authors： Beck TW,Housh TJ,Johnson GO,Schmidt RJ,Housh DJ,Coburn JW,Malek MH,Mielke M

更新日期：2007-08-01 00:00:00

abstract：:The objective of this study was to determine the effect of 2 different warm-up protocols on the neuromuscular system of well-trained middle distance runners. Seven runners performed 2 different warm-up protocols, one of which included slow running, stretching, and bounding and sprinting exercises, while the other cons...

journal_title：Journal of strength and conditioning research

authors： Skof B,Strojnik V

更新日期：2007-05-01 00:00:00

abstract：:The objective of this study was to determine the effect of acute moderate hypoxia and rest duration on performance and on the accumulated oxygen deficit (AOD) in high-intensity intermittent efforts. After preliminary tests, 2 groups of nonacclimatized men (resident at 690 m above sea level) carried out 3 randomized pr...

journal_title：Journal of strength and conditioning research

authors： Feriche B,Delgado M,Calderón C,Lisbona O,Chirosa IJ,Miranda MT,Fernández JM,Alvarez J

更新日期：2007-05-01 00:00:00

abstract：:The purpose of this study was to evaluate the effects of sprint training on muscle function and dynamic athletic performance and to compare them with the training effects induced by standard plyometric training. Male physical education students were assigned randomly to 1 of 3 groups: sprint group (SG; n = 30), plyome...

journal_title：Journal of strength and conditioning research

authors： Markovic G,Jukic I,Milanovic D,Metikos D

更新日期：2007-05-01 00:00:00

abstract：:The purpose of this experiment was to examine the effects of concurrent endurance and explosive strength training on electromyography (EMG) and force production of leg extensors, sport-specific rapid force production, aerobic capacity, and work economy in cross-country skiers. Nineteen male cross-country skiers were a...

journal_title：Journal of strength and conditioning research

authors： Mikkola JS,Rusko HK,Nummela AT,Paavolainen LM,Häkkinen K

更新日期：2007-05-01 00:00:00

abstract：:Over the past century, increases in both longevity and the number of older adults in the U.S.A. have given rise to greater numbers of functionally limited and disabled older adults. This has resulted in a decline in the quality of life of our elderly population, as well as an increased burden on our health care system...

journal_title：Journal of strength and conditioning research

authors： Sayers SP

更新日期：2007-05-01 00:00:00

abstract：:National Collegiate Athletic Association Division I athletes were tested to determine the load at which maximal mechanical output is achieved. Athletes performed power testing at 30, 40, 50, 60, and 70% of individual 1 repetition maximum (1RM) in the squat jump, bench press, and hang pull exercises. Additionally, hang...

journal_title：Journal of strength and conditioning research

authors： Thomas GA,Kraemer WJ,Spiering BA,Volek JS,Anderson JM,Maresh CM

更新日期：2007-05-01 00:00:00

abstract：:The purpose of this study was to determine the reliability and validity of regulating exercise intensity by ratings of perceived exertion in step dance sessions. Ten male college-aged students voluntarily participated in 2 step dance sessions for 45 minutes at 70-80% of their heart rate (HR) reserves with a 1-week int...

journal_title：Journal of strength and conditioning research

authors： Ozkan A,Kin-Isler A

更新日期：2007-02-01 00:00:00