International journal of sport nutrition and exercise metabolism Impact Factor & Information

Publisher: International Society of Sport Nutrition, Human Kinetics

Journal description

IJSNEM publishes original scientific investigations and scholarly reviews offering new insights into sport nutrition and exercise metabolism, as well as articles focusing on the application of the principles of biochemistry, physiology, and nutrition to sport and exercise. The journal also offers editorials, digests of related articles from other fields, research notes, and reviews of books, videos, and other media releases. IJSNEM is the official journal of the International Society of Sports Nutrition.

Current impact factor: 1.98

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 1.982
2012 Impact Factor 1.861
2011 Impact Factor 2.01
2010 Impact Factor 2.23
2009 Impact Factor 1.229
2008 Impact Factor 1.438
2007 Impact Factor 1.451
2006 Impact Factor 1.019
2005 Impact Factor 0.968

Impact factor over time

Impact factor
Year

Additional details

5-year impact 2.07
Cited half-life 7.40
Immediacy index 0.35
Eigenfactor 0.00
Article influence 0.56
Website International Journal of Sport Nutrition and Exercise Metabolism website
Other titles International journal of sport nutrition and exercise metabolism, Sport nutrition and exercise metabolism., IJSNEM
ISSN 1526-484X
OCLC 42276329
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Human Kinetics

  • Pre-print
    • Archiving status unclear
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Author's post-print only (in PDF or other image capture format)
    • On the author's personal website(s) or institutional repository
    • Publisher's version/PDF cannot be used
    • Publisher copyright and source must be acknowledged
    • Must link to publisher version
    • Set statement to accompany deposit "as accepted for publication"
    • Publisher last contacted on 05/12/2013
  • Classification
    ​ blue

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Modern culture has stereotyped the female body as one that is continually getting thinner. Internalization of the 'thin' ideal is partly attributable to the inner ideal to be successful combined with the external pressure imposed by media and others. Many individuals attempt to achieve these ideals by behavior modification that imposes health risks. To investigate disordered eating (DE) behavior and energy status in female student dancers. Volunteer dancers (n=26) aged 19.0 (18.0; 21.0) years, matched by controls (n=26) aged 20.0 (19.0; 21.0) years were recruited. Eating Disorder Inventory-3 (EDI-3) subscales, Three-factor Eating Questionnaire (TFEQ) Cognitive Dietary Restraint (CDR) subscale, and EDI-3 Referral Form behavioral questions assessed DE behavior. Energy status was assessed with a food record and Actiheart® monitor. Dancers achieved significantly higher scores than controls in all questionnaires, namely: EDI-3 Drive for Thinness [12.0 (3.0; 19.0) vs. 4.5 (2.0; 9.0), p=0.023], EDI-3 Body Dissatisfaction [16.0 (10.0; 25.0) vs. 6.5 (3.0; 14.0), p=0.004], and TFEQ-CDR [9.0 (2.0; 15.0) vs. 3.0 (3.0; 7.0), p=0.032]; dancers used excessive exercise to lose weight (19.2% vs. 0%, χ2=5.53, p=0.019), and had lower energy availability (24% vs. 8%, p<0.05) than controls. The average energy balance (EB) was negative for both groups [dancers: EB = -3896 (-5236; -1222) vs. controls: EB = -2639 (-4744; -789) kJ/day]. Female dancers are at risk for DE behavior and many have sub-optimal energy status which may be related to their quest to achieve a more desirable appearance; education on healthy weight management practices is needed.
    International journal of sport nutrition and exercise metabolism 02/2015; DOI:10.1123/ijsnem.2013-0161
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    ABSTRACT: Whenever athletes willfully or accidentally ingest performance-enhancing drugs or other banned substances (such as drugs of abuse), markers of those drugs can be detected in biological samples (e.g., biofluids: urine, saliva, blood); in the case of some drugs, that evidence can be apparent for many weeks following the last exposure to the drug. In addition to the willful use of prohibited drugs, athletes can accidentally ingest banned substances in contaminated dietary supplements or foods and inadvertently fail a drug test that could mean the end of an athletic career and the loss of a good reputation. The proliferation of performance-enhancing drugs and methods has required a corresponding increase in the analytical tools and methods required to identify the presence of banned substances in biofluids. Even though extraordinary steps have been taken by organizations such as the World Anti-Doping Agency to limit the use of prohibited substances and methods by athletes willing to cheat, it is apparent that some athletes continue to avoid detection by using alternative doping regimens or taking advantage of the limitations in testing methodologies. This article reviews the testing standards and analytical techniques underlying the procedures used to identify banned substances in biological samples, setting the stage for future summaries of the testing required to establish the use of steroids, stimulants, diuretics, and other prohibited substances.
    International journal of sport nutrition and exercise metabolism 02/2015; DOI:10.1123/ijsnem.2014-0185
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    ABSTRACT: Unaccustomed eccentric exercise using large muscle groups elicits soreness, decrements in physical function and impairs markers of whole-body insulin sensitivity; although these effects are attenuated with a repeated exposure. Eccentric exercise of a small muscle group (elbow flexors) displays similar soreness and damage profiles in response to repeated exposure. However, it is unknown whether damage to small muscle groups impacts upon whole-body insulin sensitivity. This pilot investigation aimed to characterize whole-body insulin sensitivity in response to repeated bouts of eccentric exercise of the elbow flexors. Nine healthy males completed two bouts of eccentric exercise separated by 2 weeks. Insulin resistance (updated homeostasis model of insulin resistance, HOMA2-IR) and muscle damage profiles (soreness and physical function) were assessed before, and 48 h after exercise. Matsuda insulin sensitivity indices (ISIMatsuda) were also determined in 6 participants at the same time points as HOMA2-IR. Soreness was elevated, and physical function impaired, by both bouts of exercise (both P < 0.05) but to a lesser extent following bout 2 (time x bout interaction, P < 0.05). Eccentric exercise decreased ISIMatsuda after the first but not the second bout of eccentric exercise (time x bout interaction P < 0.05). Eccentric exercise performed with an isolated upper limb impairs whole-body insulin sensitivity after the first, but not the second, bout.
    International journal of sport nutrition and exercise metabolism 02/2015; DOI:10.1123/ijsnem.2014-0211
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    ABSTRACT: Evidence suggests that increasing protein distribution may be desirable to promote muscle protein synthesis (MPS) in combination with resistance exercise. However, there is a threshold above which additional protein consumption has limited benefit for MPS and may promote protein loss due to increased oxidation. This study aimed to measure daily protein intake and protein distribution in a cohort of rugby players. Twenty-five developing elite rugby union athletes (20.5 ± 2.3 years, 100.2 ± 13.3 kg, 184.4 ± 7.4 cm) were assessed at the start and end of a rugby preseason. Using a 7-day food diary the reported daily protein intake was 2.2 ± 0.7 g·kg·day-1 which exceeds daily recommendations. The reported carbohydrate intake was 3.6 ± 1.3 g·kg·day-1 which may reflect a suboptimal intake or dietary underreporting. In general, the rugby athletes were regularly consuming more than 20 g of protein; 3.8 ± 0.9 times per day (68 ± 18% of eating occasions). In addition to documenting current dietary intakes, an excess protein estimation score was calculated to determine how frequently the rugby athletes consumed protein above a known effective dose with a margin of error. 2.0 ± 0.9 eating occasions contained protein in excess of doses (20 g) known to promote MPS. Therefore, it is currently unclear whether the consumption of regular large doses of protein will benefit rugby athletes via increasing protein distribution, or whether high protein intakes may have unintended effects including a reduction in carbohydrate and/or energy intake.
    International journal of sport nutrition and exercise metabolism 02/2015; DOI:10.1123/ijsnem.2014-0168
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    ABSTRACT: The potential for supplement use to result in doping infringements is likely to be of concern for anyone involved in sports nutrition. The available data indicates that between 40-70% of athletes use supplements, and that between 10-15% of supplements may contain prohibited substances. Such data indicates that there is a considerable risk of accidental or inadvertent doping through using supplements. Accordingly, this paper sets out to provide an overview of the currently available empirical evidence of accidental doping by supplement use. In carrying out this task, the authors refer to press releases and proxy measures associated with nutritional supplement use, as well as statistical data on supplement contamination rates and doping infractions. A number of different indications as to the percentage of doping cases that might be attributed to supplement use are presented, ranging from 6.4% to 8.8%. Such percentages are not comparable; instead they are provided as indications as to how difficult it is to ascertain or estimate the scale of this problem. Although some forms of estimation can be made, it is suggested that it is currently not possible to quantify the scale of the problem. By way of conclusion, it is argued that antidoping regulators may wish to review current data gathering and information provision systems so that the problem of inadvertent doping can be more directly assessed as a factor in sports doping overall.
    International journal of sport nutrition and exercise metabolism 02/2015; 25(1):54-9. DOI:10.1123/ijsnem.2013-0174
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    ABSTRACT: The objectives of this study were to evaluate high school coaches' knowledge in sports nutrition and the nutritional practices they recommend to their athletes. Forty-seven high school coaches in "leanness" and "non-leanness" sports from the greater region of Quebec (women = 44.7 %) completed a questionnaire on nutritional knowledge and practices. "Leanness sports" were defined as sports where leanness or/and low bodyweight were considered important (e.g. cheerleading, swimming and gymnastics), and "non-leanness sports" were defined as sports where these factors are less important (e.g. football). Participants obtained a total mean score of 68.4 % for the nutrition knowledge part of the questionnaire. More specifically, less than 30 % of the coaches could answer correctly some general nutrition questions regarding carbohydrates and lipids. No significant difference in nutrition knowledge was observed between coaches from "leanness" and "non-leanness" sports or between men and women. Respondents with a university education scored higher than the others (73.3 % vs. 63.3 %, p < 0.05). Coaches who participated in coaching certification also obtained better results than those without a coaching certification. The most popular source of information about nutrition used by coaches was the Internet at 55 %. The two most popular nutrition practices that coaches recommended in order to improve athlete performance were hydration and consumption of protein-rich foods. Recommendation for nutritional supplements use was extremely rare and was suggested only by football coaches, a non-leanness sport. Findings from this study indicate that coaches need sports nutrition education and specific training.
    International journal of sport nutrition and exercise metabolism 11/2014; DOI:10.1123/ijsnem.2014-0195
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    ABSTRACT: Ballet dancing is a multi-faceted activity requiring muscular power, strength, endurance, flexibility and agility; necessitating demanding training schedules. Furthermore dancers may be under aesthetic pressure to maintain a lean physique, and adolescent dancers require extra nutrients for growth and development. This cross-sectional study investigated the nutritional status of 47 female adolescent ballet dancers (13-18 years) living in Auckland, New Zealand. Participants who danced at least one hour per day five days per week completed a 4-day estimated food record, anthropometric measurements (Dual-energy X-ray Absorptiometry) and hematological analysis (iron and vitamin D). Mean BMI was 19.7 ± 2.4kg/m2 and percentage body fat, 23.5 ± 4.1%. The majority (89.4%) of dancers had a healthy weight (5th-85th percentile) using BMI-for-age growth charts. Food records showed a mean energy intake of 8097.3 ± 2155.6kJ/day (48.9% carbohydrate, 16.9% protein, 33.8% fat, 14.0% saturated fat). Mean carbohydrate and protein intakes were 4.8 ± 1.4 and 1.6 ± 0.5g/kg/day respectively. Over half (54.8%) of dancers consumed less than 5g carbohydrate/kg/day, and 10 (23.8%) less than 1.2 g protein/kg/day. Over 60% consumed less than the estimated average requirement for calcium, folate, magnesium and selenium. Thirteen (28.3%) dancers had suboptimal iron status (serum ferritin (SF) <20μg/L). Of these, four had iron deficiency (SF<12μg/L, hemoglobin (Hb) ≥120g/L) and one iron deficiency anemia (SF<12μg/L, Hb<120g/L). Mean serum 25-hydroxy vitamin D was 75.1 ± 18.6nmol/L, 41 (91.1%) had concentrations above 50nmol/L. Female adolescent ballet dancers are at risk of iron deficiency, and possibly inadequate nutrient intakes.
    International journal of sport nutrition and exercise metabolism 11/2014; DOI:10.1123/ijsnem.2014-0089
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    ABSTRACT: A common practice in sports science is to assess hydration status using the concentration of a single spot urine collection taken at any time of day for comparison against concentration (specific gravity, osmolality, color) thresholds established from first morning voids. There is strong evidence that this practice can be confounded by fluid intake, diet, and exercise, among other factors, leading to false positive/negative assessments. Thus, the purpose of this paper is to provide a simple explanation as to why this practice leads to erroneous conclusions and should be curtailed in favor of consensus hydration assessment recommendations.
    International journal of sport nutrition and exercise metabolism 11/2014; 25(3). DOI:10.1123/ijsnem.2014-0138