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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Scientific notes of P. F. Lesgaft University</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Scientific notes of P. F. Lesgaft University</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Ученые записки университета имени П.Ф. Лесгафта</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">1994-4683</issn>
   <issn publication-format="online">2308-1961</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">123939</article-id>
   <article-id pub-id-type="doi">10.5930/1994-4683-2026-7-97-104</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Теория и методика спорта</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>Theory and methodology of sports</subject>
    </subj-group>
    <subj-group>
     <subject>Теория и методика спорта</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Intensity of competitive loads in highly qualified cross-country skiers in races of various formats and distances</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Интенсивность соревновательных нагрузок высококвалифицированных лыжников-гонщиков в гонках различных форматов и длины</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9514-0051</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Новикова</surname>
       <given-names>Наталья Борисовна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Novikova</surname>
       <given-names>Natalia Borisovna</given-names>
      </name>
     </name-alternatives>
     <email>novik-nat@mail.ru</email>
     <bio xml:lang="ru">
      <p>кандидат педагогических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of pedagogical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5700-6559</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Иванова</surname>
       <given-names>Инна Георгиевна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ivanova</surname>
       <given-names>Inna Georgievna</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4299-9054</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Белёва</surname>
       <given-names>Анна Николаевна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Belyova</surname>
       <given-names>Anna Nikolaevna</given-names>
      </name>
     </name-alternatives>
     <email>belyova.anka@yandex.ru</email>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Федеральное государственное бюджетное учреждение «САНКТ-ПЕТЕРБУРГСКИЙ НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ ИНСТИТУТ ФИЗИЧЕСКОЙ КУЛЬТУРЫ»</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Federal State Budget Institution «SAINT-PETERSBURG SCIENTIFIC-RESEARCH INSTITUTE FOR PHYSICAL CULTURE»</institution>
     <city>Saint-Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Санкт-Петербургский научно-исследовательский институт физической культуры</institution>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Saint-Petersburg scientific-research institute for physical culture</institution>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Санкт-Петербургский научно-исследовательский институт физической культуры</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Saint-Petersburg scientific-research institute for physical culture</institution>
     <city>Saint-Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2026-07-07T09:56:07+03:00">
    <day>07</day>
    <month>07</month>
    <year>2026</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2026-07-07T09:56:07+03:00">
    <day>07</day>
    <month>07</month>
    <year>2026</year>
   </pub-date>
   <issue>7</issue>
   <fpage>97</fpage>
   <lpage>104</lpage>
   <history>
    <date date-type="received" iso-8601-date="2026-05-21T00:00:00+03:00">
     <day>21</day>
     <month>05</month>
     <year>2026</year>
    </date>
    <date date-type="accepted" iso-8601-date="2026-06-04T00:00:00+03:00">
     <day>04</day>
     <month>06</month>
     <year>2026</year>
    </date>
   </history>
   <self-uri xlink:href="https://uchzapiski.lesgaft.spb.ru/en/nauka/article/123939/view">https://uchzapiski.lesgaft.spb.ru/en/nauka/article/123939/view</self-uri>
   <abstract xml:lang="ru">
    <p>Цель исследования – анализ особенностей интенсивности соревновательной деятельности высококвалифицированных лыжников-гонщиков в гонках различных форматов и длины. &#13;
Методы и организация исследования. Применяли метод анализа и обобщения данных научно-методической литературы. Проанализированы данные мониторов сердечного ритма лыжников-гонщиков высокой квалификации с записями ЧСС во время международных соревнований в период с 2015 по 2022 гг. Использовали также методы математической статистики и визуализации данных в среде R. &#13;
Результаты исследования и выводы. Выявлены существенные различия в распределении интенсивности нагрузки в зависимости от формата и длины дистанций. С увеличением длины дистанции доля высокоинтенсивной работы закономерно снижается, однако абсолютное время в IV и V зонах на длинных дистанциях (30–50 км) превышает соответствующие показатели коротких гонок примерно вдвое. Время в III зоне пропорционально возрастает как в относительных, так и в абсолютных значениях. Выявленные особенности распределения интенсивности соревновательных нагрузок лыжников-гонщиков высокой квалификации могут быть использованы на предсоревновательном этапе для конкретизации продолжительности и интенсивности интервальных нагрузок. Систематический контроль и анализ данных спортивных часов необходим для определения индивидуально-оптимальных параметров соревновательной интенсивности.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The purpose of the study is to analyze the features of competitive activity intensity in highly qualified cross‑country skiers in races of various formats and distances. &#13;
Research methods and organization. The method of analysis and generalization of scientific and methodological literature data was used. Heart rate monitor data of highly qualified cross‑country skiers with HR recordings during international competitions in the period from 2015 to 2022 were analyzed. Mathematical statistics methods and data visualization in the R environment were also used. &#13;
Research results and conclusions. Significant differences in the distribution of load intensity were revealed depending on the format and length of the distances. With an increase in distance length, the proportion of high‑intensity work naturally decreases; however, the absolute time spent in zones IV and V during long distances (30–50 km) is approximately twice as high as the corresponding values in short races. The time spent in zone III proportionally increases in both relative and absolute values. The revealed features of the distribution of competitive load intensity in highly qualified cross‑country skiers can be used at the pre‑competition stage to specify the duration and intensity of interval loads. Systematic monitoring and analysis of sports watch data are necessary to determine individually optimal parameters of competitive intensity.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>лыжный спорт</kwd>
    <kwd>лыжные гонки</kwd>
    <kwd>спортсмены высокой квалификации</kwd>
    <kwd>соревновательные нагрузки</kwd>
    <kwd>физиология спорта</kwd>
    <kwd>частота сердечных сокращений</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>cross‑country skiing</kwd>
    <kwd>cross‑country races</kwd>
    <kwd>highly qualified athletes</kwd>
    <kwd>competitive loads</kwd>
    <kwd>sports physiology</kwd>
    <kwd>heart rate</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания № 777-00015-26-00 на 2026 год Министерства спорта Российской Федерации.</funding-statement>
    <funding-statement xml:lang="en">The work was carried out within the framework of the state task No. 777-00015-26-00 for 2026 of the Ministry of Sports of the Russian Federation.</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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