Body composition and maximum alactic anaerobic performance during a one month stay at high altitude.

Abstract:

:Prolonged altitude exposure usually leads to considerable weight loss of which a large part is from muscle tissue. This loss reduces maximum alactic anaerobic muscle power. It was hypothesized that most of the weight loss may simply be the result of malnutrition due to lack of palatable food in an uncomfortable environment. To test this hypothesis eight healthy male subjects (age 33.7 +/- 4.6 S.C. yr), well acclimatized to prevent symptoms of acute mountain sickness, were exposed for 4 weeks to an altitude of 5050 m with access to a large choice of palatable food in comfortable conditions. Body weight (with a scale), body composition (from skinfolds), arm muscle plus bone cross-sectional area (Am + b) and muscle plus bone leg volume (Vm+b) (from skinfolds and circumferences), maximum voluntary contraction force of the elbow flexors (MVC, with a load cell) and maximum jumping height (Hmax, on a platform) were measured before departure (SL) and in the first (ALT1), second (ALT2) and fourth week (ALT4) of their altitude sojourn. Three-day dietary records were obtained at SL and at ALT4. Body mass had decreased significantly at ALT2 (-3.8%) and at ALT4 (-4.6%) likely reflecting changes in body water homeostasis. No changes were found in %fat, Am+b, Vm+b, MVC or Hmax. Average dietary intake at SL was 8.96 +/- 1.45 MJ and had increased to 13.59 +/- 3.07 MJ at ALT4. In conclusion, up to an altitude of 5050 m loss of body mass from fat and muscle tissue, and hence impairment of maximum anaerobic muscle power (alactic) appears to be avoidable by food intake matched to energy expenditure. The latter may be achieved simply by proper acclimatization, sufficient comfort and availability of palatable food.

journal_name

Int J Sports Med

authors

Kayser B,Narici M,Milesi S,Grassi B,Cerretelli P

doi

10.1055/s-2007-1021171

subject

Has Abstract

pub_date

1993-07-01 00:00:00

pages

244-7

issue

5

eissn

0172-4622

issn

1439-3964

journal_volume

14

pub_type

杂志文章
  • Administration of a GABAB agonist baclofen before running to exhaustion in the rat: effects on performance and on some indicators of fatigue.

    abstract::The present study was designed to examine the effects of administration of a GABAergic agonist (Baclofen) on run-time to exhaustion in trained and untrained rats, and on some indicators of fatigue. Run-time to exhaustion on a treadmill set at a speed of 25 m.min-1 was significantly increased in both untrained (p < 0.0...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2007-972598

    authors: Abdelmalki A,Merino D,Bonneau D,Bigard AX,Guezennec CY

    更新日期:1997-02-01 00:00:00

  • Exercise training-induced alterations in skeletal muscle oxidative and antioxidant enzyme activity in senescent rats.

    abstract::Limited data exist concerning exercise training-induced alterations in skeletal muscle oxidative and antioxidant enzyme activity in senescent animals. Therefore, the purpose of this study was twofold: 1) to examine the exercise training-induced changes in oxidative and antioxidant enzyme activity in skeletal muscle of...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2007-1021290

    authors: Hammeren J,Powers S,Lawler J,Criswell D,Martin D,Lowenthal D,Pollock M

    更新日期:1992-07-01 00:00:00

  • The reliability of (31)P-MRS and NIRS measurements of spinal muscle function.

    abstract::While phosphorous magnetic resonance spectroscopy ((31)P-MRS) and near-infrared spectroscopy (NIRS) provide methods for measuring spinal muscle function non-invasively, their reliability is not established. The aim of this study was assess the reliability (ICC) and error magnitude (CV%) of measurements of muscle phosp...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-0034-1372639

    authors: Fulford J,Liepa A,Barker AR,Meakin J

    更新日期:2014-12-01 00:00:00

  • Somatic and physical traits affecting sprint swimming performance in young swimmers.

    abstract::The aim of this study was to examine the relationship between anthropometry, physical capacity, and sprint swimming performance in swimmers of both genders aged 12 - 14 years old. Anthropometric characteristics (body height and mass, total upper extremity, hand and foot lengths, chest circumference, certain body bread...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2004-817862

    authors: Geladas ND,Nassis GP,Pavlicevic S

    更新日期:2005-03-01 00:00:00

  • Exercise as a therapy to control hypertension in children.

    abstract::Hypertension is not uncommon in childhood and adolescence; vascular and renal causes predominate. Non-pharmacologic therapy, including exercise, may lower blood pressure (BP). There are several articles relating to the use of exercise as a therapy for high BP. Most of these show a beneficial effect. The "dose" of exer...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章,评审

    doi:10.1055/s-2000-8497

    authors: Alpert BS

    更新日期:2000-11-01 00:00:00

  • Exercise-induced changes in the percentage of free testosterone and estradiol in trained and untrained women.

    abstract::We have studied the effect of exercise on the percentage of free plasma estradiol 17-beta (E2) and testosterone (T) in 13 untrained (UT) and 8 trained (marathon runners, MR) eumenorrheic women. All women performed a standardized bicycle ergometer (UT) or treadmill (MR) test in the follicular and luteal phases of their...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2008-1025721

    authors: Keizer HA,Beckers E,de Haan J,Janssen GM,Kuipers H,van Kranenburg G,Geurten P

    更新日期:1987-12-01 00:00:00

  • Side effects of anabolic androgenic steroids abuse.

    abstract::Long-term side effects of high doses of anabolic androgenic steroids self-administration were evaluated in this study. Twenty male bodybuilders, voluntarily starting steroid self-administration, were followed every 6 months over 2 years. Physical examination, haematological, metabolic and endocrine variables, semen an...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2007-965808

    authors: Bonetti A,Tirelli F,Catapano A,Dazzi D,Dei Cas A,Solito F,Ceda G,Reverberi C,Monica C,Pipitone S,Elia G,Spattini M,Magnati G

    更新日期:2008-08-01 00:00:00

  • Respiratory Rate Threshold Accurately Estimates the Second Lactate Threshold.

    abstract:PURPOSE:The modified Dmax method can accurately determine the second lactate threshold (LT2), which is valuable for predicting aerobic performance and prescribing exercise. The purpose of this study is to determine if the modified Dmax method can accurately find thresholds in VE (VT2), VCO2 (VCO2T), RER (RERT), and RR ...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-0043-125448

    authors: Elmer DJ,Toney M

    更新日期:2018-04-01 00:00:00

  • Oxygen uptake response to an 800-m running race.

    abstract::We tested the hypothesis that time course of O (2) uptake (VO (2)) measured during a supramaximal exercise performed in the field is driven to maximal oxygen uptake (VO (2max)). On an outdoor track, five middle-distance male runners first performed a test to determine VO (2max) and a supramaximal 800-m running test at...

    journal_title:International journal of sports medicine

    pub_type: 临床试验,杂志文章

    doi:10.1055/s-2004-820998

    authors: Thomas C,Hanon C,Perrey S,Le Chevalier JM,Couturier A,Vandewalle H

    更新日期:2005-05-01 00:00:00

  • Motor symptoms similar to parkinsonism in heavy smokers.

    abstract::The major objective in this study was a comparison of the motor performance of young male smokers and non-smokers. We tested the endurance capacity, maximal isometric strength, speed of whole-body movements, flexibility and balancing ability of 74 smokers and 118 non-smokers. Then we measured the balancing ability, th...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2007-1021048

    authors: Burtscher M,Likar R,Pechlaner C,Kunz F,Philadelphy M

    更新日期:1994-05-01 00:00:00

  • Exercise-induced dehydration does not alter time trial or neuromuscular performance.

    abstract::This study examined the effect of exercise-induced dehydration by ~4% body mass loss on 5-km cycling time trial (TT) performance and neuromuscular drive, independent of hyperthermia. 7 active males were dehydrated on 2 occasions, separated by 7 d. Participants remained dehydrated (DEH, -3.8±0.5%) or were rehydrated (R...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章,随机对照试验

    doi:10.1055/s-0033-1364022

    authors: Stewart CJ,Whyte DG,Cannon J,Wickham J,Marino FE

    更新日期:2014-08-01 00:00:00

  • Content validity of the Rodeo-SCAT.

    abstract::The purpose of this study was to establish the content validity of the Rodeo SCAT for the sport of rodeo and bull riding. The study design was comprised of expert consensus and content validation. A modified Ebel procedure was employed to content validate the rodeo SCAT. Content validation using this method includes e...

    journal_title:International journal of sports medicine

    pub_type: 共识发展会议,杂志文章

    doi:10.1055/s-0032-1311651

    authors: Lafave MR,Butterwick DJ,Murray RP,Freeman T,Lau BH

    更新日期:2013-02-01 00:00:00

  • Effects of shoe cushioning upon ground reaction forces in running.

    abstract::To determine the effects of widely varying amounts of cushioning upon vertical force (VF) parameters, ten male subjects, (mean weight = 68.0 kg) ran at a speed of 4.5 m . s-1 (6 min/mile pace) and contacted a Kistler force platform. Two shoes were tested: a hard one and a softer shoe that had 50% more cushioning as me...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2008-1026043

    authors: Clarke TE,Frederick EC,Cooper LB

    更新日期:1983-11-01 00:00:00

  • Effects of FLIRT on bubble growth in man.

    abstract::Recompression during decompression has been suggested to possibly reduce the risk of decompression sickness (DCS). The main objective of the current study was to investigate the effects of FLIRT (First Line Intermittent Recompression Technique) on bubble detection in man. 29 divers underwent 2 simulated dives in a dry...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章,随机对照试验

    doi:10.1055/s-0032-1306328

    authors: Winkler BE,Koch A,Schoeppenthau H,Ludwig T,Tetzlaff K,Hartig F,Kaehler W,Koehler A,Kanstinger A,Ciscato W,Muth CM

    更新日期:2012-11-01 00:00:00

  • Changes of white blood cell count during prolonged exercise.

    abstract::Leukocytosis was postulated to accompany short- and medium-length exercise; in this report, we have studied the changes in leukocyte count during and following prolonged exercise. White blood cell (WBC) counts were obtained in 15 endurance-trained subjects before, during, and at a recovery period after an ultralong ex...

    journal_title:International journal of sports medicine

    pub_type: 临床试验,杂志文章

    doi:10.1055/s-2008-1025664

    authors: Galun E,Burstein R,Assia E,Tur-Kaspa I,Rosenblum J,Epstein Y

    更新日期:1987-08-01 00:00:00

  • Effect of fat and CHO meals on intermittent exercise in soccer players.

    abstract::Pre-exercise meals containing carbohydrates (CHO) are recommended to athletes, although there is evidence to suggest that a high fat meal prior to exercise increases utilisation of fats yet may not adversely affect performance. This study investigated the effect of a high fat and high CHO pre-exercise meal prior to hi...

    journal_title:International journal of sports medicine

    pub_type: 临床试验,杂志文章

    doi:10.1055/s-0032-1321798

    authors: Hulton AT,Edwards JP,Gregson W,Maclaren D,Doran DA

    更新日期:2013-02-01 00:00:00

  • Effect of sex on wasted left ventricular effort following maximal exercise.

    abstract::Wasted left ventricular effort (∆Ew) refers to work required of the left ventricle to eject blood that does not result in increased stroke volume and is related to left ventricular hypertrophy. Literature shows that men and women have differing ventricular and vascular responses to and following exercise. Our purpose ...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-0032-1329990

    authors: Lane AD,Ranadive SM,Yan H,Kappus RM,Cook MD,Sun P,Woods JA,Wilund K,Fernhall B

    更新日期:2013-09-01 00:00:00

  • Influence of varied tempo music on wheelchair mechanical efficiency following 3-week practice.

    abstract::The purpose of this study was to analyse adaptations in propulsion technique and gross efficiency in novice able-bodied subjects during the initial phase of learning hand-rim wheelchair propulsion to music. 22 able bodied participants performed wheelchair propulsion (1.1 m·s(-1)) followed by a VO(2) peak test on a whe...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-0030-1268439

    authors: Goosey-Tolfrey VL,West M,Lenton JP,Tolfrey K

    更新日期:2011-02-01 00:00:00

  • Validation of a Photoplethysmographic Heart Rate Monitor: Polar OH1.

    abstract::This study assessed the validity of a photoplethysmographic heart rate (HR) monitor, the Polar OH1 in various sports performed in ecological conditions: running, cycling, soccer, kayaking, walking, tennis and fitness. Seventy trained athletes (56 males, 14 females) wore the Polar OH1 armband and the H7 chest belt duri...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/a-0875-4033

    authors: Hermand E,Cassirame J,Ennequin G,Hue O

    更新日期:2019-07-01 00:00:00

  • Acute Effects of Pedaling Cadence at Low Intensity on Arterial Stiffness in Healthy Young Men.

    abstract::To examine the acute influence of pedaling cadence on arterial stiffness in young men, 15 healthy men (21.8±0.4 years) underwent 3 trials in self-control crossover design: non-cycling control (CON), cycling at 60 (RPM60) and 90 rounds per min (RPM90). Cycling lasted 30 min at intensity of 35% heart rate reserve. Arter...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/a-0753-5008

    authors: Yin J,Wu H,Yu L,Zhang J,Zhu W

    更新日期:2019-01-01 00:00:00

  • CD34+ circulating progenitor cells after different training programs.

    abstract::Circulating progenitor cells (CPC) are bone marrow-derived cells that are mobilized into the circulation. While exercise is a powerful mediator of hematopoiesis, CPC levels increase, and reports of their activation after different types of exercise are contradictory. Moreover, few studies have compared the possible ef...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章,随机对照试验

    doi:10.1055/s-0034-1394394

    authors: Niño O,Balague N,Aragones D,Blasi J,Alamo JM,Corral L,Javierre C,Miguel M,Viscor G,Ventura JL

    更新日期:2015-04-01 00:00:00

  • CNTFR Genotype and Sprint/power Performance: Case-control Association and Functional Studies.

    abstract::The aim of this study was to investigate whether rs41274853 in the 3'-untranslated region of the ciliary neurotrophic factor receptor gene (CNTFR) is associated with elite sprint/power athletic status and assess its functional significance. A total of 211 Japanese sprint/power track and field athletes (62 internationa...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-0035-1564257

    authors: Miyamoto-Mikami E,Fujita Y,Murakami H,Ito M,Miyachi M,Kawahara T,Fuku N

    更新日期:2016-05-01 00:00:00

  • Anthropometric variables and muscle properties of Japanese female ballet dancers.

    abstract::Physiological characteristics of japanese female classical ballet dancers were investigated in comparison with sedentary women of similar age (non-dancers). Subjects were 20 professional female ballet dancers with a mean age of 26.5 +/- 4.4 years (mean +/- SD) and 66 sedentary women with a mean age of 23.7 +/- 3.6 yea...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2007-972815

    authors: Kuno M,Fukunaga T,Hirano Y,Miyashita M

    更新日期:1996-02-01 00:00:00

  • Influence of pacing strategy on oxygen uptake during treadmill middle-distance running.

    abstract::The oxygen uptake (VO2) attained during a constant speed 800-m pace trial on a treadmill is less than the maximal VO2 (VO2max) in male middle-distance runners with a high VO2max (i.e., > 65 ml x kg (-1) x min (-1)). We therefore investigated whether the VO2 attained was influenced by the pacing strategy adopted. Eight...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2005-837468

    authors: Sandals LE,Wood DM,Draper SB,James DV

    更新日期:2006-01-01 00:00:00

  • Knee and hip joint biomechanics are gender-specific in runners with high running mileage.

    abstract::Female runners are reported to be more prone to develop specific knee joint injuries than males. It has been suggested that increased frontal plane joint loading might be related to the incidence of these knee injuries in running. The purpose of this study was to evaluate if frontal plane knee and hip joint kinematics...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-0033-1343406

    authors: Gehring D,Mornieux G,Fleischmann J,Gollhofer A

    更新日期:2014-02-01 00:00:00

  • Haematological analysis conducted at the departure of the Tour de France 2001.

    abstract::Since the introduction of blood analysis performed before major cycling events in 1997, there have been discussions concerning the quality of the results. The aim of our study therefore was to measure blood samples and compare the results obtained on the field with those obtained in the laboratory. For this it was nec...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2004-830495

    authors: Robinson N,Schattenberg L,Zorzoli M,Mangin P,Saugy M

    更新日期:2005-04-01 00:00:00

  • Effect of inertia on performance and fatigue pattern during repeated cycle sprints in males and females.

    abstract::The effect of recovery duration on performance and fatigue pattern during short exercises was studied including and excluding the flywheel inertia. Subjects (11 males and 11 females) performed a force-velocity test to determine their optimal force (f (opt)). On the following day, subjects performed randomly 4 series o...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2003-45262

    authors: Falgairette G,Billaut F,Giacomoni M,Ramdani S,Boyadjian A

    更新日期:2004-04-01 00:00:00

  • Blood gas transport properties in endurance-trained athletes living at different altitudes.

    abstract::Hemoglobin oxygen binding properties and acid-base status were investigated in Colombian athletes (A) and controls (C) from Cali (C-1000 m) and Bogotá (B-2600 m). [Hb] and Hct values were not influenced by altitude, but Hct was lower in the blood of athletes (in Cali 2.6%, in Bogotá 1.4%). Both training and altitude p...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章,评审

    doi:10.1055/s-2007-1024755

    authors: Schmidt W,Dahners HW,Correa R,Ramirez R,Rojas J,Böning D

    更新日期:1990-02-01 00:00:00

  • Heart rate responses at onset of contraction.

    abstract::We tested the hypothesis that the initial heart rate (HR) response at the onset of maximal handgrip contraction is altered after training. 17 volunteers (nine trained and eight controls) performed ten intermittent static handgrip contractions with maximal effort, alternating between 15-s contractions and 15-s pauses. ...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章

    doi:10.1055/s-2007-989373

    authors: Hachiya T,Blaber AP,Aizawa S,Saito M

    更新日期:2008-08-01 00:00:00

  • A communicational link between skeletal muscle, brain, and cells of the immune system.

    abstract::The present paper reviews evidence for the role of specific amino acids in the etiology of fatigue and the overtraining syndrome in athletes. An increase in the plasma concentration ratio of free tryptophan: branched-chain amino acids may mediate an increase in 5-HT synthesis in the brain and thus induce fatigue durin...

    journal_title:International journal of sports medicine

    pub_type: 杂志文章,评审

    doi:10.1055/s-2007-1024863

    authors: Parry-Billings M,Blomstrand E,McAndrew N,Newsholme EA

    更新日期:1990-05-01 00:00:00