PMID- 28628396
OWN - NLM
STAT- MEDLINE
DCOM- 20180409
LR  - 20180409
IS  - 1541-1087 (Electronic)
IS  - 0731-5724 (Linking)
VI  - 36
IP  - 5
DP  - 2017 Jul
TI  - Differential in Maximal Aerobic Capacity by Sex in Collegiate Endurance Athletes 
      Consuming a Marginally Low Carbohydrate Diet.
PG  - 370-377
LID - 10.1080/07315724.2017.1311812 [doi]
AB  - PURPOSE: Although current sports nutrition recommendations advocate for a high 
      carbohydrate (CHO) intake among endurance athletes, recent research has suggested 
      that training with low CHO availability may augment adaptations to aerobic 
      training. The purpose of this study was to observe the dietary habits of 
      collegiate distance runners and to investigate the effects of habitual CHO intake 
      on aerobic performance [VO(2max)(post)] during a competitive season. METHODS: 
      During an 8-week trial period, 12 (N = 12) collegiate track athletes recorded 
      their self-selected dietary intake via 24-hour recall. Analysis of CHO intake was 
      conducted by a registered dietitian. Pre [VO(2max) (pre)] and post [VO(2max) 
      (post)] season aerobic capacity assessments were performed using a one-way 
      analysis of covariance (ANCOVA) with 2 covariates controlling for VO(2max) (pre) 
      and CHO intake compared to the variance in VO(2max) (pre) and VO(2max) (post) by 
      sex. RESULTS: The average CHO was 4.11 +/- 1.03 g/kg body mass (BM), with only one 
      female athlete meeting dietary recommendations, consuming >/= 6 g/kg BM. Male 
      distance runners on average had a lower CHO than females. After adjusting for 
      VO(2max) (pre) and CHO, there were statistically significant differences between 
      VO(2max) (post) group means by sex with a difference of 12.62 ml/kg/min (95% 
      confidence interval [CI], 2.12-23.12, p = 0.02), with CHO accounting for 18% of 
      the variance in VO(2max) (post). CONCLUSION: Collegiate distance runners 
      exhibited marked improvements in maximal aerobic capacity during the in-season 
      while consuming a marginally low-CHO diet, with a predominant effect in males. 
      Therefore, CHO intakes below current recommendations for endurance athletes might 
      not be detrimental to aerobic training adaptations.
FAU - Baranauskas, Marissa N
AU  - Baranauskas MN
AD  - a School of Public Health , Indiana University , Bloomington , Indiana.
AD  - c School of Nutrition and Dietetics , The University of Akron , Akron , Ohio.
FAU - Miller, Brian
AU  - Miller B
AD  - a School of Public Health , Indiana University , Bloomington , Indiana.
AD  - b School of Sport Science and Wellness Education.
FAU - Olson, Jordan T
AU  - Olson JT
AD  - b School of Sport Science and Wellness Education.
FAU - Boltz, Michelle
AU  - Boltz M
AD  - c School of Nutrition and Dietetics , The University of Akron , Akron , Ohio.
FAU - Richardson, Laura
AU  - Richardson L
AD  - b School of Sport Science and Wellness Education.
FAU - Juravich, Matthew
AU  - Juravich M
AD  - b School of Sport Science and Wellness Education.
FAU - Otterstetter, Ronald
AU  - Otterstetter R
AD  - a School of Public Health , Indiana University , Bloomington , Indiana.
LA  - eng
PT  - Journal Article
DEP - 20170619
PL  - United States
TA  - J Am Coll Nutr
JT  - Journal of the American College of Nutrition
JID - 8215879
SB  - IM
MH  - Adolescent
MH  - *Athletes
MH  - *Diet, Carbohydrate-Restricted
MH  - Exercise/*physiology
MH  - Female
MH  - Humans
MH  - Male
MH  - *Physical Endurance
MH  - Sex Factors
MH  - Young Adult
OTO - NOTNLM
OT  - Aerobic capacity
OT  - body composition
OT  - endurance training
EDAT- 2017/06/20 06:00
MHDA- 2018/04/10 06:00
CRDT- 2017/06/20 06:00
PHST- 2017/06/20 06:00 [pubmed]
PHST- 2018/04/10 06:00 [medline]
PHST- 2017/06/20 06:00 [entrez]
AID - 10.1080/07315724.2017.1311812 [doi]
PST - ppublish
SO  - J Am Coll Nutr. 2017 Jul;36(5):370-377. doi: 10.1080/07315724.2017.1311812. Epub 
      2017 Jun 19.