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-Associated Anemia in Rats? Yu-Qian Liu * Yan-Zhong Chang * Bin Zhao * Hai-Tao Wang * Xiang-Lin Duan * 2 2011 21 21 1 1 19 19 26 26 10.1123/ijsnem.21.1.19 Effect of Caffeine Intake on Pain Perception During High-Intensity Exercise Todd A. Astorino * Michael N. Terzi * Daniel W. Roberson * Timothy R

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24 24 3 3 Gastrointestinal Bleeding After High Intake of Omega-3 Fatty Acids, Cortisone and Antibiotic Therapy: A Case Study Paraskevi Detopoulou * Vasilios Papamikos * 6 2014 24 24 3 3 253 253 257 257 10.1123/ijsnem.2013-0204 Preexercise Carbohydrate Feeding and High-Intensity Exercise

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Peter M. Christensen and Jens Bangsbo

Purpose:

To evaluate the influence of warm-up exercise intensity and subsequent recovery on intense endurance performance, selected blood variables, and the oxygen-uptake (VO2) response.

Methods:

Twelve highly trained male cyclists (VO2max 72.4 ± 8.0 mL · min−1 · kg−1, incremental-test peak power output (iPPO) 432 ± 31 W; mean ± SD) performed 3 warm-up strategies lasting 20 min before a 4-min maximal-performance test (PT). Strategies consisted of moderate-intensity exercise (50%iPPO) followed by 6 min of recovery (MOD6) or progressive high-intensity exercise (10–100%iPPO and 2 × 20-s sprints) followed by recovery for 6 min (HI6) or 20 min (HI20).

Results:

Before PT venous pH was lower (P < .001) in HI6 (7.27 ± 0.05) than in HI20 (7.34 ± 0.04) and MOD6 (7.35 ± 0.03). At the same time, differences (P < .001) existed for venous lactate in HI6 (8.2 ± 2.0 mmol/L), HI20 (5.1 ± 1.7 mmol/L), and MOD6 (1.4 ± 0.4 mmol/L), as well as for venous bicarbonate in HI6 (19.3 ± 2.6 mmol/L), HI20 (22.6 ± 2.3 mmol/L), and MOD6 (26.0 ± 1.4 mmol/L). Mean power in PT in HI6 (402 ± 38 W) tended to be lower (P = .11) than in HI20 (409 ± 34 W) and was lower (P = .007) than in MOD6 (416 ± 32 W). Total VO2 (15–120 s in PT) was higher in HI6 (8.18 ± 0.86 L) than in HI20 (7.85 ± 0.82 L, P = .008) and MOD6 (7.90 ± 0.74 L, P = .012).

Conclusions:

Warm-up exercise including race-pace and sprint intervals combined with short recovery can reduce subsequent performance in a 4-min maximal test in highly trained cyclists. Thus, a reduced time at high exercise intensity, a reduced intensity in the warm-up, or an extension of the recovery period after an intense warm-up is advocated.

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Glycemic Index Meal before Exercise Improves Endurance Running Capacity in Men Ching-Lin Wu * Clyde Williams * 10 2006 16 16 5 5 510 510 527 527 10.1123/ijsnem.16.5.510 Physiological and Cognitive Responses to Caffeine during Repeated, High-Intensity Exercise Melissa J. Crowe * Anthony S. Leicht

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on Muscle Insulin-Like Growth Factor in Young Adults Darren G. Burke * Darren G. Candow * Philip D. Chilibeck * Lauren G. MacNeil * Brian D. Roy * Mark A. Tarnopolsky * Tim Ziegenfuss * 8 2008 18 18 4 4 389 389 398 398 10.1123/ijsnem.18.4.389 Chicken Breast Attenuates High-Intensity-Exercise

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-exercise Carbohydrate Ingestion on Plasma Cytokine, Stress Hormone, and Neutrophil Degranulation Responses to Continuous, High-Intensity Exercise Graeme I. Lancaster * Roy L.P.G. Jentjens * Luke Moseley * Asker E. Jeukendrup * Michael Gleeson * 12 2003 13 13 4 4 436 436 453 453 10.1123/ijsnem.13

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. Stepto * Rudi Klein * William G. Hopkins * John A. Hawley * 12 2000 10 10 4 4 464 464 475 475 10.1123/ijsnem.10.4.464 Effects of Carbohydrate and Chromium Ingestion during Intermittent High-Intensity Exercise to Fatigue J. Mark Davis * Ralph S. Welsh * Nathan A. Alderson * 12 2000 10 10 4 4

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* Jorge A. Herrera Soto * Frank T. Hacker Jr. * Douglas J. Casa * Stavros A. Kavouras * Carl M. Maresh * 12 1998 8 8 4 4 345 345 355 355 10.1123/ijsn.8.4.345 An Investigation into the Effects of Sodium Citrate Ingestion on High-Intensity Exercise Performance Ken van Someren * Kathy Fulcher

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. Gibson * Vivian H. Heyward * Christine M. Mermier * Jeffrey M. Janot * M. Virginia Wilmerding * 12 2004 14 14 6 6 657 657 672 672 10.1123/ijsnem.14.6.657 Gastrointestinal Discomfort during Intermittent High-Intensity Exercise: Effect of Carbohydrate–Electrolyte Beverage Xiaocai Shi * Mary K

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-Electrolyte Beverage, Lemon Tea, or Water on Rehydration During Short-Term Recovery From Exercise Stephen Heung-Sang Wong * Yajun Chen * 8 2011 21 21 4 4 300 300 310 310 10.1123/ijsnem.21.4.300 Effects of Lactate Consumption on Blood Bicarbonate Levels and Performance During High-Intensity Exercise David M