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    <item>
      <title>Blutflussbeschränktes Training und Zeitfahrleistung: Eine Kohortenstudie mit Weltklasse-Ruderern</title>
      <pubDate>Mon, 01 Jan 2024 09:30:47 +0100</pubDate>
      <link>https://www.sponet.de/sponet/Record/4090093</link>
      <guid>https://www.sponet.de/sponet/Record/4090093</guid>
      <author>Thompson, K. M. A.</author>
      <author>Pethick, W. A.</author>
      <author>Clarke, J.</author>
      <author>Winegarden, A.</author>
      <author>Johnson, E.</author>
      <author>Coates, A. M.</author>
      <author>Stellingwerff, T.</author>
      <author>Burr, J. F.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Rudern</dc:subject>
      <dc:subject>Leistung</dc:subject>
      <dc:subject>Ausdauer</dc:subject>
      <dc:subject>Laktat</dc:subject>
      <dc:subject>Leistungsfähigkeit</dc:subject>
      <dc:subject>Training</dc:subject>
      <dc:subject>Durchblutung</dc:subject>
      <dc:tag>blood flow restriction training</dc:tag>
      <dc:format>Artikel</dc:format>
      <dc:creator>Thompson, K. M. A.</dc:creator>
      <dc:creator>Pethick, W. A.</dc:creator>
      <dc:creator>Clarke, J.</dc:creator>
      <dc:creator>Winegarden, A.</dc:creator>
      <dc:creator>Johnson, E.</dc:creator>
      <dc:creator>Coates, A. M.</dc:creator>
      <dc:creator>Stellingwerff, T.</dc:creator>
      <dc:creator>Burr, J. F.</dc:creator>
      <content:encoded><![CDATA[Introduction 
This study aimed to explore the potential impact of incorporating blood flow restriction (BFR) training within a training block characterized by minimal high-intensity work on 2000-m rowing ergometer time trial (TT) performance in elite/world-class rowers. Physiological markers often associated with endurance performance (maximal aerobic capacity, VO2max; blood lactate thresholds and hemoglobin mass, Hbmass) were measured to determine whether changes are related to an improvement in performance.

Methods 
Using a quasi-experimental, observational study design (no control group), 2000-m TT performance, V?O2max, submaximal work rates eliciting blood lactate concentrations of ~2 and ~4 mmol·L-1, and Hbmass were measured before and after 4 wk of noncompetitive season training, which included BFR rowing. BFR training consisted of 11 sessions of 2 × 10 min of BFR rowing at a workload equating to blood lactate concentrations of ~2 mmol·L-1. Paired t-tests were used to compare pre-/postvalues, and Pearson correlation was used to examine whether physiological changes were associated with changes to TT performance.

Results 
TT performance improved in both female (1.09% ± 1.2%, ~4.6 ± 5.2 s; P < 0.01) and male (1.17% ± 0.48%, ~4.5 ± 1.9 s; P < 0.001) athletes. VO2max increased in female rowers only (P < 0.01), but both sexes had an increase in work rates eliciting blood lactate concentrations of 2 mmol·L-1 (female: 184 ± 16 to 195 ± 15 W, P < 0.01; male: 288 ± 23 to 317 ± 26 W, P = 0.04) and 4 mmol·L-1 (female: 217 ± 13 to 227 ± 14 W, P = 0.02; male: 339 ± 43 to 364 ± 39 W, P < 0.01). No changes in Hbmass (both sexes, P = 0.8) were observed. Improvements in TT performance were not related to physiological changes (all correlations P = 0.2).

Conclusions 
After 4 wk of training with BFR, the improvement in TT performance was greater than what is typical for this population. Physiological variables improved during this training block but did not explain improved TT performance.]]></content:encoded>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Training mit Blutflusseinschränkung und Wettkampfleistung: eine Kohortenstudie unter Weltklasse-Ruderern</title>
      <pubDate>Mon, 01 Jan 2024 09:30:47 +0100</pubDate>
      <link>https://www.sponet.de/sponet/Record/4087865</link>
      <guid>https://www.sponet.de/sponet/Record/4087865</guid>
      <author>Thompson, K. M.</author>
      <author>Pethick, W. A.</author>
      <author>Clarke, J.</author>
      <author>Winegarden, A.</author>
      <author>Johnson, E.</author>
      <author>Coates, A. M.</author>
      <author>Stellingwerff, T.</author>
      <author>Burr, J. F.</author>
      <dc:format>Artikel</dc:format>
      <dc:subject>Rudern</dc:subject>
      <dc:subject>Blut</dc:subject>
      <dc:subject>Training</dc:subject>
      <dc:subject>Trainingsmethode</dc:subject>
      <dc:subject>Trainingsmittel</dc:subject>
      <dc:subject>Durchblutung</dc:subject>
      <dc:subject>Mangel</dc:subject>
      <dc:subject>Sportphysiologie</dc:subject>
      <dc:subject>Belastung</dc:subject>
      <dc:subject>O2</dc:subject>
      <dc:subject>maximal</dc:subject>
      <dc:subject>Laktat</dc:subject>
      <dc:subject>Leistung</dc:subject>
      <dc:subject>Leistungsfähigkeit</dc:subject>
      <dc:subject>Trainingswirkung</dc:subject>
      <dc:tag>Blutfluss</dc:tag>
      <dc:tag>Hämoglobin</dc:tag>
      <dc:format>Artikel</dc:format>
      <dc:creator>Thompson, K. M.</dc:creator>
      <dc:creator>Pethick, W. A.</dc:creator>
      <dc:creator>Clarke, J.</dc:creator>
      <dc:creator>Winegarden, A.</dc:creator>
      <dc:creator>Johnson, E.</dc:creator>
      <dc:creator>Coates, A. M.</dc:creator>
      <dc:creator>Stellingwerff, T.</dc:creator>
      <dc:creator>Burr, J. F.</dc:creator>
      <content:encoded><![CDATA[Introduction 
This study aimed to explore the potential impact of incorporating blood-flow restriction (BFR) training within a training block characterized by minimal high-intensity work on 2000-m rowing ergometer time-trial (TT) performance in elite/world-class rowers. Physiological markers often associated with endurance performance (maximal aerobic capacity - VO2max, blood lactate thresholds and hemoglobin mass - Hbmass) were measured to determine whether changes are related to an improvement in performance.

Methods 
Using a quasi-experimental, observational study design (no control group), 2000-m TT performance, VO2max, submaximal work rates eliciting blood lactate concentrations of ~2 and ~ 4 mmol·L-1, and Hbmass were measured before and after 4 weeks of non-competitive season training, which included BFR rowing. BFR training consisted of 11 sessions of 2x10 minutes of BFR rowing at a workload equating to blood lactate concentrations of ~2 mmol·L-1. Paired t-tests were used to compare pre/post values, and Pearson correlation was used to examine whether physiological changes were associated with changes to TT performance.

Results 
TT performance improved in both female (1.09 ± 1.2%, ~4.6 ± 5.2 s; p < 0.01) and male (1.17 ± 0.48%, ~4.5 ± 1.9 s; p < 0.001) athletes. VO2max increased in female rowers only (p < 0.01), but both sexes had an increase in work rates eliciting blood lactate concentrations of 2 (female:184 ± 16 to 195 ± 15 W, p < 0.01; male:288 ± 23 to 317 ± 26 W, p = 0.04) and 4 mmol·L-1 (female:217 ± 13 to 227 ± 14 W, p = 0.02; male:339 ± 43 to 364 ± 39 W, p < 0.01). No changes in Hbmass (both sexes, p = 0.8) were observed. Improvements in TT performance were not related to physiological changes (all correlations p = 0.2).

Conclusions 
After 4 weeks of training with BFR, the improvement in TT performance was greater than what is typical for this population. Physiological variables improved during this training block but did not explain improved TT performance.]]></content:encoded>
      <slash:comments>0</slash:comments>
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