The Effects of Rapid Weight Loss and Attempted Rehydration on Strength and Endurance of the Handgripping Muscles in College Wrestlers

Serfass, R. C.; Stull, G. Alan; Alexander, John F.; Ewing, John L.

doi:10.1080/02701367.1984.10605354

Cited by 37 publications

(26 citation statements)

References 12 publications

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“…Studies measuring dehydration eVects on muscular strength or anaerobic performance are sparse and have yielded mixed results, showing signiWcant impairment (Bigard et al 2001;Bosco et al 1968Bosco et al , 1974Ftaiti et al 2001;Greenleaf et al 1967;Houston et al 1981;Judelson et al 2007b;SchoVstall et al 2001;Viitasalo et al 1987;Yoshida et al 2002), no eVects (Cheuvront et al 2006;Evetovich et al 2002;Greiwe et al 1998;Judelson et al 2007b; Montain et al 1998;Saltin 1964;Serfass et al 1984;Singer and Weiss 1968;Yoshida et al 2002) or even signiWcant improvements (Ahlman and Karvonen 1961;Widerman and Hagan 1982). Studies examining muscular endurance have shown signiWcant impairment (Bosco et al 1974;Caterisano et al 1988;Montain et al 1998;Torranin et al 1979) and no diVerence (Caterisano et al 1988;Ftaiti et al 2001;Greiwe et al 1998).…”

Section: Introductionmentioning

confidence: 94%

Impact of dehydration on a full body resistance exercise protocol

et al. 2010

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This study examined effects of dehydration on a full body resistance exercise workout. Ten males completed two trials: heat exposed (with 100% fluid replacement) (HE) and dehydration (approximately 3% body mass loss with no fluid replacement) (DEHY) achieved via hot water bath (approximately 39 degrees C). Following HE and DEHY, participants performed three sets to failure (using predetermined 12 repetition maximum) of bench press, lat pull down, overhead press, barbell curl, triceps press, and leg press with a 2-min recovery between each set and 2 min between exercises. A paired t test showed total repetitions (all sets combined) were significantly lower for DEHY: (144.1 +/- 26.6 repetitions) versus HE: (169.4 +/- 29.1 repetitions). ANOVAs showed significantly lower repetitions (approximately 1-2 repetitions on average) per exercise for DEHY versus HE (all exercises). Pre-set rate of perceived exertion (RPE) and pre-set heart rate (HR) were significantly higher [approximately 0.6-1.1 units on average in triceps press, leg press, and approached significance in lat pull down (P = 0.14) and approximately 6-13 b min(-1) on average in bench press, lat pull down, triceps press, and approached significance for overhead press (P = 0.10)] in DEHY versus HE. Session RPE difference approached significance (DEHY: 8.6 +/- 1.9, HE: 7.4 +/- 2.3) (P = 0.12). Recovery HR was significantly higher for DEHY (116 +/- 15 b min(-1)) versus HE (105 +/- 13 b min(-1)). Dehydration (approximately 3%) impaired resistance exercise performance, decreased repetitions, increased perceived exertion, and hindered HR recovery. Results highlight the importance of adequate hydration during full body resistance exercise sessions.

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Section: Introductionmentioning

confidence: 94%

Impact of dehydration on a full body resistance exercise protocol

et al. 2010

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“…This is true whether it was static strength that was measured, a s in earlier studies (1,58,61,73), or dynamic strength (30,80) and anaerobic"owera (34,48,52), as assessed in more recent research. FYgure 1 depicts the relationship between weight$loss and shortterm, high intensity performance from.previous~research~on wrestlers.…”

Section: Effects On Performancementioning

confidence: 98%

“…In .those studies in which a decrement in performance was observed after weight loss, performance returned to normal after the recovery period (approximately 5 hrs) (23,37,45,50). Other studies showed no difference between the physical performance after weight loss and after nutritional recovery (35,58). One study showed an improvement in strength after weight loss and after 'nutritional recovery compared to the preweight-loss performance; the improvement was attributed to either the effects of learning or warm-up (1).…”

Section: Resting Metabolic Ratementioning

confidence: 98%

“…For longer performances, sustained or intermittent, w e a d others (24,26,30,43,45,,63,77) have measured significant decreases in performance. In contrast, we and others, have also found no adverse effects (26,30,58) when certain dietary practices were8employed.…”

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confidence: 90%

“…First, wrestlers use a variety of methods to lose weight, each of which have varyingbeffects on performance (9). In several Studies, wrestlers were permitted to use their typical#methods fowweight loss (7,21,23,37,48,50,52,58,61,73) but differences in*individnal practicesiWere not considered. Second, variations'in the composition of the diet consumed during weigfit loss may confound the effects of weight loss.…”

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confidence: 99%

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Weight Loss and Weight Cycling in Amateur Wrestlers: Implications for Performance and Resting Metabolic Rate

Horswill¹

1993

International Journal of Sport Nutrition

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recdvery period between the official aweigh-in and competition, wrestlers , , ,I . achieve at lea~t~partial nutfitional recovery, whioh appears to benefibperforr mance. Successive bouts of (a) weight loss to make weight and (b) recovery ; for performance lead to weight cycling. There is speculation that, weight, 1 , 2' cycling mayeontribute to chronic glycogen depletion, reductions in fat-free t L weight, a decrease in resting metabolic rate, and an intxease in body fat. 8 -The latter two would augment the diffisulty of losing weight for ~ubsequent , weigh-ins. Most research indicates that the suppressed ~esting metabolic rate with weight loss irvwrestlers appears toqbe transient, but s~bsequ'mt,resea~h is needed for confirmation, Craig A.

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Effect of moderate dehydration on torque, electromyography, and mechanomyography

et al. 2002

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The purpose of the present investigation was to test the hypotheses that the mechanomyographic (MMG) signal would be affected by hydration status due to changes in the intra- and extracellular fluid content (which could affect the degree of fluid turbulence), changes in the filtering properties of the tissues between the MMG sensor and muscle, and changes in torque production that may accompany dehydration. Ten subjects (age 22.5 +/- 1.6 years) were tested for maximal isometric (MVC), submaximal isometric (25, 50, and 75%MVC), and maximal concentric isokinetic muscle strength of the biceps brachii in either a euhydrated or dehydrated state while the electromyographic (EMG) and MMG signals were recorded. Separate three-way and two-way ANOVAs indicated no change in torque, EMG amplitude, EMG mean power frequency (MPF), MMG amplitude, and MMG MPF with dehydration. The lack of dehydration effect suggests that MMG may be more reflective of the intrinsic contractile processes of a muscle fiber (torque production) or the motor control mechanisms (reflected by the EMG) than the tissues and fluids surrounding the muscle fiber.

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The Effects of Rapid Weight Loss and Attempted Rehydration on Strength and Endurance of the Handgripping Muscles in College Wrestlers

Cited by 37 publications

References 12 publications

Impact of dehydration on a full body resistance exercise protocol

Impact of dehydration on a full body resistance exercise protocol

Weight Loss and Weight Cycling in Amateur Wrestlers: Implications for Performance and Resting Metabolic Rate

Effect of moderate dehydration on torque, electromyography, and mechanomyography

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