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      <title>Die Auswirkung einer achtwöchigen kohlenhydratarmen und fettreichen (LCHF) Ernährung bei Gewichthebern und Powerliftern unterhalb des Spitzenbereichs auf Kraft, Körperzusammensetzung, mentalem Zustand und Adhärenz: Eine Fallstudie</title>
      <pubDate>Sun, 01 Jan 2017 16:38:13 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/4045295</link>
      <guid>https://sponet.de/sponet/Record/4045295</guid>
      <author>Chatterton, S.</author>
      <author>Zinn, C.</author>
      <author>Helms, E.</author>
      <author>Storey, A.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Ernährung</dc:subject>
      <dc:subject>Kohlenhydrat</dc:subject>
      <dc:subject>Fett</dc:subject>
      <dc:subject>Regulation</dc:subject>
      <dc:subject>Körpermaß</dc:subject>
      <dc:subject>Kraft</dc:subject>
      <dc:subject>psychischer Prozess</dc:subject>
      <dc:subject>Gewichtheben</dc:subject>
      <dc:subject>Leistung</dc:subject>
      <dc:tag>Powerlifting</dc:tag>
      <dc:format>Artikel</dc:format>
      <dc:creator>Chatterton, S.</dc:creator>
      <dc:creator>Zinn, C.</dc:creator>
      <dc:creator>Helms, E.</dc:creator>
      <dc:creator>Storey, A.</dc:creator>
      <content:encoded><![CDATA[The effect of low carbohydrate, high fat (LCHF) diets on performance in weight-class restricted strength athletes is inconclusive. However, an LCHF diet could be an effective weight-loss strategy for competition preparation, provided strength is maintained. This study examined the LCHF utility, quantitatively and qualitatively, in five sub-elite level Olympic weightlifters and powerlifters during an 8-week intervention. 
Two sub-elite Olympic weightlifters and three sub-elite power lifters completed an 8-week LCHF intervention. Carbohydrate was reduced to 1g/kg/day, protein maintained at baseline levels and fat eaten ad libitum. Pre-and post-quantitative measures included strength performance, skinfold measurements, muscle ultrasound imaging and a psychometric questionnaire (recorded daily). Qualitative measures included a written questionnaire and post intervention in-person interviews. 
Four out of five participants reduced body weight (2.1-3.6 kg). Three participants` skinfolds decreased (11.0-27.3 mm). Two participants` strength increased after the intervention similarly to retrospective performances; two participants` strength remained unchanged; one participant`s absolute and relative strength decreased. DALDA analysis showed statistically significant trends (p<0.05) in multiple participants for "tiredness" and "need for rest" with a greater prevalence of `worse than normal` scores during the intervention. Low energy and fatigue were identified as common themes during the initial weeks of the LCHF intervention. Overall, the participants found the diet acceptable for their training and lifestyle. 
An 8-week LCHF diet had no detrimental effect on performance in four of five athletes, yet allowed for a reduction in body weight and skinfolds. An LCHF diet could be appropriate for strength athletes when timing, training phase, lifestyle and individual food preferences are considered. Future research should target a larger cohort to investigate possible LCHF benefits for strength athletes.]]></content:encoded>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Auswirkung einer achtwöchigen kohlenhydratarmen und fettreichen (LCHF) Ernährung auf Gewichtheber unterhalb des Hochleistungsbereichs und bei Powerliftern hinsichtlich Kraft, Körperzusamensertzung, mentalem Zustand und Adhärenz: Eine Pilotstudie</title>
      <pubDate>Sun, 01 Jan 2017 16:38:13 +0100</pubDate>
      <link>https://sponet.de/sponet/Record/4043047</link>
      <guid>https://sponet.de/sponet/Record/4043047</guid>
      <author>Chatterton, S.</author>
      <author>Zinn, C.</author>
      <author>Helms, E.</author>
      <author>Storey, A.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Gewichtheben</dc:subject>
      <dc:subject>Ernährung</dc:subject>
      <dc:subject>Regulation</dc:subject>
      <dc:subject>Gewicht</dc:subject>
      <dc:subject>Kohlenhydrat</dc:subject>
      <dc:subject>Fett</dc:subject>
      <dc:subject>Relation</dc:subject>
      <dc:subject>Kraft</dc:subject>
      <dc:subject>psychischer Prozess</dc:subject>
      <dc:tag>Powerlifting</dc:tag>
      <dc:format>Artikel</dc:format>
      <dc:creator>Chatterton, S.</dc:creator>
      <dc:creator>Zinn, C.</dc:creator>
      <dc:creator>Helms, E.</dc:creator>
      <dc:creator>Storey, A.</dc:creator>
      <content:encoded><![CDATA[Purpose: The  effect  of  low  carbohydrate,  high  fat  (LCHF)  diets  on  performance  in  weight-class  restricted strength  athletes  is inconclusive. However, an LCHF diet could be an effective weight-loss strategy for competition preparation, provided strength  is  maintained. This  study  examined  the  LCHF  utility,  quantitatively  and  qualitatively,  in  five  sub-elite  level Olympic weightlifters and powerlifters during an 8-week intervention. 
Methods: Two  sub-elite  Olympic  weightlifters  and  three  sub-elite  power  lifters  completed  an  8-week  LCHF  intervention. Carbohydrate was reduced to 1g/kg/day, protein maintained at baseline levels and fat eaten ad libitum. Pre-and post-quantitative measures  included  strength  performance,  skinfold  measurements, muscle  ultrasound  imaging  and  a psychometric  questionnaire  (recorded  daily).  Qualitative  measures  included  a   written   questionnaire   and  post intervention in-person interviews. 
Results: Four out of five participants reduced body weight (2.1-3.6 kg). Three participants` skinfolds decreased (11.0-27.3 mm). Two participants` strength increased after the intervention similarly to retrospective performances; two participants` strength  remained unchanged; one participant`s absolute and relative strength decreased. 
DALDA  analysis  showed statistically significant trends (p<0.05) in multiple participants for "tiredness" and "need for rest" with a greater prevalence of `worse than normal` scores during the intervention. Low energy and fatigue were identified as common themes during the  initial  weeks  of  the  LCHF  intervention.  Overall,  the  participants  found  the  diet  acceptable  for  their  training  and lifestyle. 
Conclusion: An 8-week LCHF diet had no detrimental effect on performance in four of five athletes, yet allowed for a reduction in body weight and skinfolds. An LCHF diet could be appropriate for strength athletes when timing, training phase, lifestyle and individual food preferences are considered. Future research should target a larger cohort to investigate possible LCHF benefits for strength athletes.   The effect of an 8-week low carbohydrate high fat (LCHF) diet in sub-elite Olympic weightlifters and powerlifters on strength, body composition, mental state and adherence: a pilot case-study. ]]></content:encoded>
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