Physical fitness and body composition after a 9-month deployment to Afghanistan.

Abstract:

PURPOSE:To examine change in physical fitness and body composition after a military deployment to Afghanistan. METHODS:One hundred and ten infantry soldiers were measured before and after a 9-month deployment to Afghanistan for Operation Enduring Freedom. Measurements included treadmill peak oxygen uptake (peak VO2), lifting strength, medicine ball put, vertical jump, and body composition estimated via dual-energy x-ray absorptiometry (percent body fat, absolute body fat, fat-free mass, bone mineral content, and bone mineral density). RESULTS:There were significant decreases (P < 0.01) in peak VO2 (-4.5%), medicine ball put (-4.9%), body mass (-1.9%), and fat-free mass (-3.5%), whereas percent body fat increased from 17.7% to 19.6%. Lifting strength and vertical jump performance did not change predeployment to postdeployment. CONCLUSIONS:Nine months deployment to Afghanistan negatively affected aerobic capacity, upper body power, and body composition. The predeployment to postdeployment changes were not large and unlikely to present a major health or fitness concern. If deployments continue to be extended and time between deployments decreased, the effects may be magnified and further study warranted.

journal_name

Med Sci Sports Exerc

authors

Sharp MA,Knapik JJ,Walker LA,Burrell L,Frykman PN,Darakjy SS,Lester ME,Marin RE

doi

10.1249/MSS.0b013e318176b978

subject

Has Abstract

pub_date

2008-09-01 00:00:00

pages

1687-92

issue

9

eissn

0195-9131

issn

1530-0315

journal_volume

40

pub_type

杂志文章
  • Exercise intensity-related responses of fibrinolytic activity and vasopressin in man.

    abstract::The physiological mechanism of exercise-induced hyperfibrinolysis is not fully understood. It has been reported that exercise increases plasma arginine vasopressin (PAVP) and that PAVP infusion enhances blood fibrinolytic activity (FA). To characterize the fibrinolytic role of PAVP during exercise, PAVP and FA were ex...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:

    authors: el-Sayed MS

    更新日期:1990-08-01 00:00:00

  • Aquatic training and detraining on fitness and quality of life in fibromyalgia.

    abstract:PURPOSE:To evaluate the effects of a 12-wk period of aquatic training and subsequent detraining on health-related quality of life (HRQOL) and physical fitness in females with fibromyalgia. METHODS:Thirty-four females with fibromyalgia were randomly assigned into two groups: an exercise group, who exercised for 60 min ...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章,随机对照试验

    doi:10.1249/01.mss.0b0138059aec4

    authors: Tomas-Carus P,Häkkinen A,Gusi N,Leal A,Häkkinen K,Ortega-Alonso A

    更新日期:2007-07-01 00:00:00

  • Gender differences in head impacts sustained by collegiate ice hockey players.

    abstract:PURPOSE:This study aimed to quantify the frequency, magnitude, and location of head impacts sustained by male and female collegiate ice hockey players during two seasons of play. METHODS:During two seasons, 88 collegiate athletes (51 females, 37 males) on two female and male National Collegiate Athletic Association va...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0b013e31822b0ab4

    authors: Brainard LL,Beckwith JG,Chu JJ,Crisco JJ,McAllister TW,Duhaime AC,Maerlender AC,Greenwald RM

    更新日期:2012-02-01 00:00:00

  • Validation of the Arizona Activity Frequency Questionnaire using doubly labeled water.

    abstract:PURPOSE:Physical activity questionnaires (PAQs) are considered the most cost-efficient method to estimate total energy expenditure (TEE) in epidemiological studies. However, relatively few PAQs have been validated using doubly labeled water (DLW) in women or in samples with diverse ethnic backgrounds. This study was co...

    journal_title:Medicine and science in sports and exercise

    pub_type: 临床试验,杂志文章

    doi:10.1097/00005768-200111000-00024

    authors: Staten LK,Taren DL,Howell WH,Tobar M,Poehlman ET,Hill A,Reid PM,Ritenbaugh C

    更新日期:2001-11-01 00:00:00

  • Regression analysis in biological research: sample size and statistical power.

    abstract::Regression analysis is often used to demonstrate associations among variables believed to be biologically related. Failure to demonstrate a "significant" relationship may be due to two factors: 1) the variables are truly unrelated, or 2) a relationship exists but goes undetected due to inadequate statistical power. In...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:

    authors: Sharp DS,Gahlinger PM

    更新日期:1988-12-01 00:00:00

  • Step-Based Physical Activity Metrics and Cardiometabolic Risk: NHANES 2005-2006.

    abstract:PURPOSE:This study aimed to catalog the relationships between step-based accelerometer metrics indicative of physical activity volume (steps per day, adjusted to a pedometer scale), intensity (mean steps per minute from the highest, not necessarily consecutive, minutes in a day; peak 30-min cadence), and sedentary beha...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0000000000001100

    authors: Tudor-Locke C,Schuna JM Jr,Han HO,Aguiar EJ,Green MA,Busa MA,Larrivee S,Johnson WD

    更新日期:2017-02-01 00:00:00

  • Seasonal and annual variation in young children's physical activity.

    abstract:INTRODUCTION:It is well established that regular physical activity (PA) contributes to lower levels of morbidity and mortality. However, little is known about the stability of very young children's PA habits across seasons and years. The aims of this study were to 1) examine the influence of season and increasing age o...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0b013e3182464db5

    authors: McKee DP,Murtagh EM,Boreham CA,Nevill AM,Murphy MH

    更新日期:2012-07-01 00:00:00

  • Tracking of physical activity in young children.

    abstract::The purpose of this study was to determine whether physical activity behavior tracks during early childhood. Forty-seven children (22 males, 25 females) aged 3-4 yr at the beginning of the study were followed over a 3-yr period. Heart rates were measured at least 2 and up to 4 d.yr-1 with a Quantum XL Telemetry heart ...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1097/00005768-199601000-00019

    authors: Pate RR,Baranowski T,Dowda M,Trost SG

    更新日期:1996-01-01 00:00:00

  • Effects of resistance training on adiposity and metabolism after spinal cord injury.

    abstract:PURPOSE:This pilot work was conducted to evaluate the effects of neuromuscular electrical stimulation resistance training (RT) of the paralyzed knee extensor muscle groups on skeletal muscle and intramuscular fat (IMF) cross-sectional areas, trunk visceral adipose tissue (VAT), carbohydrate, and lipid profiles in men w...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章,随机对照试验

    doi:10.1249/MSS.0b013e31822672aa

    authors: Gorgey AS,Mather KJ,Cupp HR,Gater DR

    更新日期:2012-01-01 00:00:00

  • Altered quadriceps control in people with anterior cruciate ligament deficiency.

    abstract:PURPOSE:The purpose of this study was to determine whether similar patterns of quadriceps dysfunction are observed when people with anterior cruciate ligament (ACL) deficiency perform static and dynamic tasks. METHODS:EMG data were collected from 15 subjects with an ACL deficient knee and 15 uninjured subjects as they...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/01.mss.0000131959.20666.11

    authors: Williams GN,Barrance PJ,Snyder-Mackler L,Buchanan TS

    更新日期:2004-07-01 00:00:00

  • Marathon running leads to partial exhaustion of ROS-generating capacity in leukocytes.

    abstract:PURPOSE:The aim of the present study was to investigate the changes occurring in leukocyte levels of reactive oxygen species (ROS) and total blood plasma antioxidant capacity (TAS) as a result of a marathon/half-marathon race. METHODS:Fourteen men participating in the Oslo Marathon 2000 and 8 women and 8 men participa...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/01.MSS.0000106168.12113.95

    authors: Nielsen HG,Hagberg IA,Lyberg T

    更新日期:2004-01-01 00:00:00

  • Insulin-like growth factor I signaling in skeletal muscle and the potential for cytokine interactions.

    abstract::Recent research has demonstrated that intracellular signaling components associated with several proinflammatory cytokines have the potential to interact with signaling pathways that regulate anabolic processes in skeletal muscle. This presentation and the ensuing brief review are intended to present a selection of th...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0b013e3181b07d12

    authors: Adams GR

    更新日期:2010-01-01 00:00:00

  • Limb muscle dysfunction in COPD: effects of muscle wasting and exercise training.

    abstract:PURPOSE:Lower-limb muscle weakness has often been reported in COPD, and contributes to exercise intolerance. Controversial information is available regarding upper-limb muscle adaptations and the influence of muscle wasting on muscle weakness. We investigated leg and arm muscle function in 59 stable COPD patients (GOLD...

    journal_title:Medicine and science in sports and exercise

    pub_type: 临床试验,杂志文章

    doi:10.1249/01.mss.0000150082.59155.4f

    authors: Franssen FM,Broekhuizen R,Janssen PP,Wouters EF,Schols AM

    更新日期:2005-01-01 00:00:00

  • Acute Exercise Improves Mood and Motivation in Young Men with ADHD Symptoms.

    abstract:PURPOSE:Little is known about whether acute exercise affects signs or symptoms of attention deficit/hyperactivity disorder (ADHD) in adults. This experiment sought to determine the effects of a single bout of moderate-intensity leg cycling exercise on measures of attention, hyperactivity, mood, and motivation to comple...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0000000000000864

    authors: Fritz KM,O'Connor PJ

    更新日期:2016-06-01 00:00:00

  • Core stability measures as risk factors for lower extremity injury in athletes.

    abstract:INTRODUCTION/PURPOSE:Decreased lumbo-pelvic (or core) stability has been suggested to contribute to the etiology of lower extremity injuries, particularly in females. This prospective study compares core stability measures between genders and between athletes who reported an injury during their season versus those who ...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/01.mss.0000128145.75199.c3

    authors: Leetun DT,Ireland ML,Willson JD,Ballantyne BT,Davis IM

    更新日期:2004-06-01 00:00:00

  • Very Few Exercise-Induced Arterialized Gas Bubbles Reach the Cerebral Vasculature.

    abstract:INTRODUCTION:Arterialization of venous gas emboli (VGE) formed after surfacing from SCUBA diving can become arterial gas emboli (AGE) through intrapulmonary arterial-venous anastomoses that open with exercise. METHODS:We recruited twenty patent foramen ovale-negative SCUBA divers and conducted a field and a laboratory...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0000000000000625

    authors: Barak OF,Madden D,Lovering AT,Lambrechts K,Ljubkovic M,Dujic Z

    更新日期:2015-09-01 00:00:00

  • Active recovery, endurance training, and the calculation of the individual anaerobic threshold.

    abstract::The individual anaerobic threshold (IAT) is the highest metabolic rate at which blood lactate (LA) concentrations are maintained at a steady state during prolonged exercise. The purpose of this study was to compare the effects of active and passive recovery on the determination of the IAT before and after an endurance...

    journal_title:Medicine and science in sports and exercise

    pub_type: 临床试验,杂志文章

    doi:

    authors: McLellan TM,Jacobs I

    更新日期:1989-10-01 00:00:00

  • Critical Velocity during Intermittent Running with Changes of Direction.

    abstract:PURPOSE:We tested the hypothesis that critical velocity (CV) during intermittent running with changes of direction is reliably and accurately identified from a simple shuttle field test. We also tested the hypothesis that CV during intermittent running with changes of direction running is not equivalent to continuous l...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0000000000001774

    authors: Kirby BS,Bradley EM,Wilkins BW

    更新日期:2019-02-01 00:00:00

  • Associations among physical activity, television watching, and obesity in adult Pima Indians.

    abstract::It has been suggested that television watching and physical activity are related to obesity. This association, however, has been investigated mainly in children. This study provided the opportunity to examine the relationship between television watching, physical activity, and body mass index in adult Pima Indians, a ...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1097/00005768-199707000-00010

    authors: Fitzgerald SJ,Kriska AM,Pereira MA,de Courten MP

    更新日期:1997-07-01 00:00:00

  • Protein to Maximize Whole-Body Anabolism in Resistance-trained Females after Exercise.

    abstract:INTRODUCTION:Current athlete-specific protein recommendations are based almost exclusively on research in males. PURPOSE:Using the minimally invasive indicator amino acid oxidation technique, we determined the daily protein intake that maximizes whole-body protein synthesis (PS) and net protein balance (NB) after exer...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章,随机对照试验

    doi:10.1249/MSS.0000000000001832

    authors: Malowany JM,West DWD,Williamson E,Volterman KA,Abou Sawan S,Mazzulla M,Moore DR

    更新日期:2019-04-01 00:00:00

  • Fundamental movement skills and habitual physical activity in young children.

    abstract:PURPOSE:To test for relationships between objectively measured habitual physical activity and fundamental movement skills in a relatively large and representative sample of preschool children. METHODS:Physical activity was measured over 6 d using the Computer Science and Applications (CSA) accelerometer in 394 boys an...

    journal_title:Medicine and science in sports and exercise

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1249/01.mss.0000159138.48107.7d

    authors: Fisher A,Reilly JJ,Kelly LA,Montgomery C,Williamson A,Paton JY,Grant S

    更新日期:2005-04-01 00:00:00

  • Effect of physical exercise and vitamin C on absorption of ferric sodium citrate.

    abstract::The effect of physical exercise and vitamin C on iron absorption after oral iron administration was investigated. Eight healthy male subjects without iron deficiency were studied after administration of 100 mg ferric sodium citrate complex, 100 mg ferric sodium citrate complex with 200 mg ascorbic acid, and without ir...

    journal_title:Medicine and science in sports and exercise

    pub_type: 临床试验,杂志文章

    doi:10.1097/00005768-199612000-00005

    authors: Schmid A,Jakob E,Berg A,Russmann T,König D,Irmer M,Keul J

    更新日期:1996-12-01 00:00:00

  • Aerobic training improves vagal reactivation regardless of resting vagal control.

    abstract:PURPOSE:Resting cardiac vagal modulation (RCVM) and postexercise vagal reactivation (PEVR) are markers of parasympathetic activity. We investigated whether adaptations in these markers to aerobic training are influenced by baseline autonomic control. METHODS:Forty healthy men (19.2 ± 0.8 yr) of similar cardiorespirato...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章,随机对照试验

    doi:10.1249/MSS.0000000000000532

    authors: Duarte A,Soares PP,Pescatello L,Farinatti P

    更新日期:2015-06-01 00:00:00

  • Maximal exercise responses to acute and chronic beta-adrenergic blockade in healthy male subjects.

    abstract::Conflicting data on the alterations in the maximal exercise response to beta blockade (BB) may be the result of differences in the length of time the subject has been on medication, i.e., hours vs days. The purpose of this study was to examine maximal exercise responses during acute and chronic administration of BB. T...

    journal_title:Medicine and science in sports and exercise

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:

    authors: Jilka SM,Joyner MJ,Nittolo JM,Kalis JK,Taylor JA,Lohman TG,Wilmore JH

    更新日期:1988-12-01 00:00:00

  • Effects of short-term exercise training on plasminogen activator inhibitor (PAI-1).

    abstract:PURPOSE:To observe the effects of exercise training on plasminogen activator inhibitor, type-1 (PAI-1), tissue plasminogen activator (tPA), and associated metabolic variables in sedentary men and women. METHODS:A randomized, controlled experimental design was used to examine the influence of 10 d of moderate-intensity...

    journal_title:Medicine and science in sports and exercise

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1249/01.MSS.0000093751.82616.F0

    authors: Bodary PF,Yasuda N,Watson DD,Brown AS,Davis JM,Pate RR

    更新日期:2003-11-01 00:00:00

  • Fitness during Breast Cancer Treatment and Recovery in an Athlete: A Case Study.

    abstract:PURPOSE:This is a case study of an aerobically trained, multisport, female athlete (age = 39) diagnosed with stage IIIc human epidermal growth factor receptor 2 positive breast cancer. The focus of the study is on measures of cardiorespiratory fitness (V˙O2peak) through the course of cancer therapy. METHODS:A symptom-...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0000000000000987

    authors: Savage PD,Dittus K,Lakoski SG

    更新日期:2016-10-01 00:00:00

  • Cardiac Responses to Submaximal Isometric Contraction and Aerobic Exercise in Healthy Pregnancy.

    abstract:PURPOSE:The increased physiological demand of pregnancy results in profound adaptation of the maternal cardiovascular system, reflected by greater resting cardiac output and left ventricular (LV) deformation. Whether the increased resting demand alters acute cardiac responses to exercise in healthy pregnant women is no...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0000000000002554

    authors: Meah VL,Backx K,Cockcroft JR,Shave RE,StÖhr EJ

    更新日期:2020-11-03 00:00:00

  • Monitoring the lactate threshold in world-ranked swimmers.

    abstract:PURPOSE:To determine whether lactate profiling could detect changes in discrete aspects of endurance fitness in world-ranked swimmers during a season. METHODS:Eight male and four female Australian National Team swimmers aged 20--27 yr undertook a 7 x 200-m incremental swimming step test on four occasions over an 8-mon...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1097/00005768-200102000-00019

    authors: Pyne DB,Lee H,Swanwick KM

    更新日期:2001-02-01 00:00:00

  • Assessing sedentary behavior with the GENEActiv: introducing the sedentary sphere.

    abstract:BACKGROUND:The Sedentary Sphere is a method for the analysis, identification, and visual presentation of sedentary behaviors from a wrist-worn triaxial accelerometer. PURPOSE:This study aimed to introduce the concept of the Sedentary Sphere and to determine the accuracy of posture classification from wrist acceleromet...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章

    doi:10.1249/MSS.0000000000000224

    authors: Rowlands AV,Olds TS,Hillsdon M,Pulsford R,Hurst TL,Eston RG,Gomersall SR,Johnston K,Langford J

    更新日期:2014-06-01 00:00:00

  • American College of Sports Medicine position stand. Nutrition and athletic performance.

    abstract::It is the position of the American Dietetic Association, Dietitians of Canada, and the American College of Sports Medicine that physical activity, athletic performance, and recovery from exercise are enhanced by optimal nutrition. These organizations recommend appropriate selection of foods and fluids, timing of intak...

    journal_title:Medicine and science in sports and exercise

    pub_type: 杂志文章,实务指引,评审

    doi:10.1249/MSS.0b013e31890eb86

    authors: American Dietetic Association.,Dietitians of Canada.,American College of Sports Medicine.,Rodriguez NR,Di Marco NM,Langley S

    更新日期:2009-03-01 00:00:00