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Topic: Research

The new items published under this topic are as follows.

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Treadmills and over ground running. Which causes the most stress fractures?

Posted by: pshields on Monday, April 07, 2003 - 01:33 AM 3128 Reads
Research

Are overground or treadmill runners more likely to sustain tibial stress fracture?

Milgrom C, Finestone A, Segev S, Olin C, Arndt T, Ekenman I.

Br J Sports Med 2003 Apr;37(2):160-3

Department of Orthopaedics, Hadassah University Hospital, Ein Kerem, Jerusalem, Israel Department of Orthopaedics, Rabin Medical Center, Beilinson Campus, Petach Tikva, Israel Department of Orthopaedics, Huddinge University Hospital, Huddinge, Sweden.

BACKGROUND: Repetitive high bone strain and/or strain rates, such as those that occur during running, contribute to stress fractures as well as promoting maintenance of or increase in bone mass. Kinematic differences are known to exist between overground and treadmill running and these may be reflected in different bone strains and strain rates during the two running techniques.





Influence of vitamin C supplementation on Recovery

Posted by: pshields on Monday, March 24, 2003 - 03:30 AM 3449 Reads
Research

Influence of vitamin C supplementation on oxidative and salivary IgA changes following an ultramarathon.


Palmer FM, Nieman DC, Henson DA, McAnulty SR, McAnulty L, Swick NS, Utter AC, Vinci DM, Morrow JD.

Departments of Health, Leisure and Exercise Science; Biology; Family and Consumer Sciences, Appalachian State University, PO Box 32071, 28608, Boone, NC, USA.

Eur J Appl Physiol 2003 Mar;89(1):100-107

This randomized study measured the influence of vitamin C ( N=15) compared to placebo ( N=13) supplementation on oxidative and salivary immunoglobulin A (sIgA) changes in runners competing in an ultramarathon race.





The effect of plyometric training on distance running performance

Posted by: pshields on Sunday, March 16, 2003 - 03:08 AM 3595 Reads
Research

The effect of plyometric training on distance running performance.

Spurrs RW, Murphy AJ, Watsford ML.

Human Movement Department, School of Leisure, Sport and Tourism, University of Technology, Sydney, PO Box 222, Lindfield NSW 2070, Australia, r.spurrs@uts.edu.au

Eur J Appl Physiol 2003 Mar;89(1):1-7

Previous research has reported that plyometric training improves running economy (RE) and ultimately distance-running performance, although the exact mechanism by which this occurs remains unclear. This study examined whether changes in running performance resulting from plyometric training were related to alterations in lower leg musculotendinous stiffness (MTS).





Pulmonary function during cycling and running in triathletes

Posted by: pshields on Sunday, March 16, 2003 - 01:38 AM 3766 Reads
Research

Pulmonary function during cycling and running in triathletes.

Hue O, Boussana A, Le Gallais D, Prefaut C.

Laboratoire ACTE, UFR-STAPS, Antilles-Guyane, Pointe a Pitre Cedex, France.

J Sports Med Phys Fitness 2003 Mar;43(1):44-50

AIM: Running performance has become key to the triathlete's overall performance. We still know relatively little about the factors that define the ability to perform a good run after cycling, however, and the perception of discomfort during the first minutes of this post-cycling running has yet to be satisfactorily explained.





Explosive-strength training improves 5-km running time

Posted by: pshields on Thursday, March 06, 2003 - 06:15 AM 4848 Reads
Research

Explosive-strength training improves 5-km running time by improving running economy and muscle power.

Paavolainen L, Hakkinen K, Hamalainen I, Nummela A, Rusko H.

KIHU-Research Institute for Olympic Sports, University of Jyvaskyla, SF-40700 Jyvaskyla, Finland.

J Appl Physiol 1999 May;86(5):1527-33

To investigate the effects of simultaneous explosive-strength and endurance training on physical performance characteristics, 10 experimental (E) and 8 control (C) endurance athletes trained for 9 wk.





Assessment of the accuracy of the Conconi test

Posted by: pshields on Wednesday, February 26, 2003 - 11:43 PM 3951 Reads
Research

Assessment of the accuracy of the Conconi test in determining gas analysis anaerobic threshold.

Carey D.

J Strength Cond Res 2002 Nov;16(4):641-4

Health and Human Performance, University of St. Thomas, St. Paul, Minnesota 55105, USA. dgcarey@stthomas.edu

The primary objective of this study was to assess the validity of the Conconi method of assessing anaerobic threshold (AT). Twenty-two competitive cyclists (11 men, 11 women) performed an incremental, maximal oxygen uptake (Vdot;o(2)max) test on an electrically braked cycle ergometer.





The relationship between field tests of anaerobic power and 10-k run performance

Posted by: pshields on Saturday, February 22, 2003 - 04:59 AM 4226 Reads
Research

The relationship between field tests of anaerobic power and 10-km run performance.


Sinnett AM, Berg K, Latin RW, Noble JM.

J Strength Cond Res 2001 Nov;15(4):405-12

School of Health, Physical Education and Recreation, University of Nebraska at Omaha, Omaha, NE 68182, USA.

The purpose of this study was to investigate the relationship between several field tests of anaerobic power and distance running performance. Thirty-six trained runners (20 men and 16 women; mean SD age, 27.9 5.7 years) participated in this study.





Aerobic fitness reduces brain tissue loss in aging humans

Posted by: pshields on Monday, February 17, 2003 - 11:33 PM 3934 Reads
Research

Aerobic fitness reduces brain tissue loss in aging humans.

Colcombe SJ, Erickson KI, Raz N, Webb AG, Cohen NJ, McAuley E, Kramer AF.

J Gerontol A Biol Sci Med Sci 2003 Feb;58(2):M176-80

Beckman Institute, University of Illinois, Urbana. Institute of Gerontology, Wayne State University, Detroit, Michigan.

BACKGROUND: The human brain gradually loses tissue from the third decade of life onward, with concomitant declines in cognitive performance. Given the projected rapid growth in aged populations, and the staggering costs associated with geriatric care, identifying mechanisms that may reduce or reverse cerebral deterioration is rapidly emerging as an important public health goal. Previous research has demonstrated that aerobic fitness training improves cognitive function in older adults and can improve brain health in aging laboratory animals, suggesting that aerobic fitness may provide a mechanism to improve cerebral health in aging humans. We examined the relationship between aerobic fitness and in vivo brain tissue density in an older adult population, using voxel-based morphometric techniques.





Improvement in Running Economy After 6 Weeks of Plyometric Training

Posted by: pshields on Thursday, February 13, 2003 - 11:41 PM 5418 Reads
Research

Improvement in Running Economy After 6 Weeks of Plyometric Training.

Turner AM, Owings M, Schwane JA.

J Strength Cond Res 2003 Feb;17(1):60-67

Exercise Physiology Laboratory, Department of Health and Kinesiology, The University of Texas at Tyler, Tyler, Texas 75799.

This study determined whether a 6-week regimen of plyometric training would improve running economy (i.e., the oxygen cost of submaximal running). Eighteen regular but not highly trained distance runners (age = 29 7 [mean SD] years) were randomly assigned to experimental and control groups. All subjects continued regular running training for 6 weeks; experimental subjects also did plyometric training.





Effects of concurrent endurance and strength training on economy and VO2

Posted by: pshields on Wednesday, February 05, 2003 - 04:07 AM 4464 Reads
Research

Effects of concurrent endurance and strength training on running economy and .VO(2) kinetics.

Millet GP, Jaouen B, Borrani F, Candau R.

Med Sci Sports Exerc 2002 Aug;34(8):1351-9

Faculte des Sciences du Sport, Universite de Montpellier 1, 700 Avenue Pic Saint Loup, 34090 Montpellier, France. g.millet@staps.univ-montp1.fr

PURPOSE: It has been suggested that endurance training influences the running economy (CR) and the oxygen uptake (.VO(2)) kinetics in heavy exercise by accelerating the primary phase and attenuating the .VO(2) slow component. However, the effects of heavy weight training (HWT) in combination with endurance training remain unclear. The purpose of this study was to examine the influence of a concurrent HWT+endurance training on CR and the .VO(2) kinetics in endurance athletes.





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