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Three days fast in sportsmen decreases physical work capacity but not strength or perception-reaction time.
Gutiérrez A, González-Gross M, Delgado M, Castillo MJ. Gutiérrez A, et al. Int J Sport Nutr Exerc Metab. 2001 Dec;11(4):420-9. doi: 10.1123/ijsnem.11.4.420. Int J Sport Nutr Exerc Metab. 2001. PMID: 11915777 Clinical Trial.
This study investigates, in young nonobese healthy athletes, the consequences of a 3-day fast coupled, or not, to enhanced physical activity. ...Fasting determined a significant decrease in blood glucose levels, while plasma proteins, urea, uric acid, and free fatty …
This study investigates, in young nonobese healthy athletes, the consequences of a 3-day fast coupled, or not, to enhanced physical a …
Elimination of meat, fish, and derived products from the Spanish-Mediterranean diet: effect on the plasma lipid profile.
Delgado M, Gutiérrez A, Cano MD, Castillo MJ. Delgado M, et al. Among authors: gutierrez a. Ann Nutr Metab. 1996;40(4):202-11. doi: 10.1159/000177915. Ann Nutr Metab. 1996. PMID: 8886248 Clinical Trial.

During the 2-month intervention period, a decrease in total plasma cholesterol concentrations (4.53 +/- 0.13 vs. 4.29 +/- 0.13 mmol/l, p < 0.05) was observed, mostly as a result of decreased high-density lipoprotein cholesterol levels (1.66 +/- 0.08 vs. 1.47 +/-

During the 2-month intervention period, a decrease in total plasma cholesterol concentrations (4.53 +/- 0.13 vs. 4.29 +/- 0.13 mmol/l …
Hand size influences optimal grip span in women but not in men.
Ruiz-Ruiz J, Mesa JL, Gutiérrez A, Castillo MJ. Ruiz-Ruiz J, et al. Among authors: gutierrez a. J Hand Surg Am. 2002 Sep;27(5):897-901. doi: 10.1053/jhsu.2002.34315. J Hand Surg Am. 2002. PMID: 12239682 Clinical Trial.
We also intended to derive a simple mathematical algorithm to adapt grip span to hand size. Seventy healthy subjects (40 women/30 men; mean age, 40 years; range; 20-80 years) free of upper-limb lesions were evaluated. ...We provide a mathematical equation (y = x/5 + …
We also intended to derive a simple mathematical algorithm to adapt grip span to hand size. Seventy healthy subjects (40 women/30 men …
Sauna-induced rapid weight loss decreases explosive power in women but not in men.
Gutiérrez A, Mesa JL, Ruiz JR, Chirosa LJ, Castillo MJ. Gutiérrez A, et al. Int J Sports Med. 2003 Oct;24(7):518-22. doi: 10.1055/s-2003-42017. Int J Sports Med. 2003. PMID: 12968210
For rehydration, a carbohydrate beverage (6.3 % glucose, 9.5 mmol/l Na (+), 10 degrees C) was used. Evaluation consisted of body composition, strength (row-strength, handgrip-strength) and jump capacity (squat jump, counter-movement jump and elastic capacity). ...In women, …
For rehydration, a carbohydrate beverage (6.3 % glucose, 9.5 mmol/l Na (+), 10 degrees C) was used. Evaluation consisted of body comp …
Acute exposure to moderate high altitude decreases growth hormone response to physical exercise in untrained subjects.
Gutiérrez A, González-Gross M, Ruiz JR, Mesa JL, Castillo MJ. Gutiérrez A, et al. J Sports Med Phys Fitness. 2003 Dec;43(4):554-8. J Sports Med Phys Fitness. 2003. PMID: 14767420 Clinical Trial.
Aerobic physical fitness in relation to blood lipids and fasting glycaemia in adolescents: influence of weight status.
Mesa JL, Ruiz JR, Ortega FB, Wärnberg J, González-Lamuño D, Moreno LA, Gutiérrez A, Castillo MJ. Mesa JL, et al. Among authors: gutierrez a. Nutr Metab Cardiovasc Dis. 2006 May;16(4):285-93. doi: 10.1016/j.numecd.2006.02.003. Epub 2006 Apr 21. Nutr Metab Cardiovasc Dis. 2006. PMID: 16679221
Plasma glucose, total, high density lipoprotein (HDL) and low density lipoprotein (LDL) cholesterol, triglycerides, apolipoprotein (apo) A-I, apo B-100 and lipoprotein(a) [Lp(a)] were measured in 460 of the 2090 subjects. ...Our study also provides the minima …
Plasma glucose, total, high density lipoprotein (HDL) and low density lipoprotein (LDL) cholesterol, triglycerides, apolipoprotein (apo) …
Increased susceptibility to plasma lipid peroxidation in untrained subjects after an extreme mountain bike challenge at moderate altitude.
Ruiz JR, Ortega FB, Castillo MJ, Gutierrez A, Agil A. Ruiz JR, et al. Among authors: gutierrez a. Int J Sports Med. 2006 Jul;27(7):587-9. doi: 10.1055/s-2005-865817. Int J Sports Med. 2006. PMID: 16802256
Eleven male amateur cyclists took part in a 95-km mountain bike challenge with a cumulative altitude difference of 2340 m. Blood samples were obtained before and immediately after the race in order to determine plasma lipid and lipoprotein concentrations, and to ass …
Eleven male amateur cyclists took part in a 95-km mountain bike challenge with a cumulative altitude difference of 2340 m. Blo …
Extreme mountain bike challenges may induce sub-clinical myocardial damage.
Ortega FB, Ruiz JR, Gutiérrez A, Castillo MJ. Ortega FB, et al. Among authors: gutierrez a. J Sports Med Phys Fitness. 2006 Sep;46(3):489-93. J Sports Med Phys Fitness. 2006. PMID: 16998457
METHODS: Plasma urea, creatinine, creatine kinase, myoglobin and cardiac troponin I (cTnI) concentrations were measured the day before and immediately after a mountain bike challenge (distance 95 km, cumulative altitude difference 2340 m) in eleven amateur male cyclists. . …
METHODS: Plasma urea, creatinine, creatine kinase, myoglobin and cardiac troponin I (cTnI) concentrations were measured the day before and i …
Hand span influences optimal grip span in male and female teenagers.
Ruiz JR, España-Romero V, Ortega FB, Sjöström M, Castillo MJ, Gutierrez A. Ruiz JR, et al. Among authors: gutierrez a. J Hand Surg Am. 2006 Oct;31(8):1367-72. doi: 10.1016/j.jhsa.2006.06.014. J Hand Surg Am. 2006. PMID: 17027801
If they are related then the second aim was to derive a mathematic equation relating hand span and optimal grip span. METHODS: One hundred healthy teenage boys (15.1 +/- 1.1 y) and 106 girls (15.4 +/- 1.3 y) were evaluated (age range, 13-18 y). Each hand was randomly teste …
If they are related then the second aim was to derive a mathematic equation relating hand span and optimal grip span. METHODS: One hu …
Serum lipids, body mass index and waist circumference during pubertal development in Spanish adolescents: the AVENA Study.
Ruiz JR, Ortega FB, Tresaco B, Wärnberg J, Mesa JL, González-Gross M, Moreno LA, Marcos A, Gutiérrez A, Castillo MJ; AVENA Study Group. Ruiz JR, et al. Among authors: gutierrez a. Horm Metab Res. 2006 Dec;38(12):832-7. doi: 10.1055/s-2006-956503. Horm Metab Res. 2006. PMID: 17163360
METHODS: A representative Spanish sample of 526 adolescents (254 males and 272 females), were studied. Total cholesterol (TC), high density lipoprotein cholesterol (HDLc), triglycerides, apolipoprotein A1 and B, and lipoprotein(a) were measured, and low density lipo …
METHODS: A representative Spanish sample of 526 adolescents (254 males and 272 females), were studied. Total cholesterol (TC), high d …
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