Sub-maximal heart rate is associated with changes in high-intensity intermittent running ability in professional rugby league players
Hulin, Billy T., Gabbett, Tim J., Johnston, Rich D. and Jenkins, David G.. (2019) Sub-maximal heart rate is associated with changes in high-intensity intermittent running ability in professional rugby league players. Science and Medicine in Football. 3(1), pp. 50-56. https://doi.org/10.1080/24733938.2018.1475748
|Authors||Hulin, Billy T., Gabbett, Tim J., Johnston, Rich D. and Jenkins, David G.|
Objectives: We examined: (1) relationships among sub-maximal heart rate (sub-maxHR) following 4 minutes of the Yo-Yo intermittent recovery test level 1 (IR1) and maximal-effort performance (distance covered at volitional exhaustion), (2) test re-test reliability of sub-maxHR, and (3) whether changes in maximal-effort Yo-Yo performance are related with changes in sub-maxHR in professional rugby league players.
Methods: Yo-Yo IR1 performances of 32 players were assessed before and after 28.5 ± 6.8 days of pre-season training. Relationships between sub-maxHR and maximal-effort Yo-Yo performance, and changes in maximal-effort performance and sub-maxHR were compared.
Results: Maximal-effort Yo-Yo IR1 performance and sub-maxHR correlated negatively (r = −0.73, CI −0.85 to −0.55, very large). Coefficient of variation (CV) of sub-maxHR was 2.4% (CI 2.0−3.3%), worthwhile changes of small (0.7 [CI 0.5−1.0%]), moderate (2.1 [CI 1.6−3.0%]) and large (4.3 [CI 3.3−6.1%]) were identified. Training-induced changes in sub-maxHR and Yo-Yo IR1 performance displayed a negative correlation (r = −0.57, CI −0.74 to −0.33, large).
Conclusions: sub-maxHR has a very large negative relationship with maximal-effort Yo-Yo IR1 performance. Training-induced changes in sub-maxHR demonstrated a large negative relationship with changes in Yo-Yo IR1 performance. The CV and worthwhile changes can determine meaningful variations in sub-maxHR in professional rugby league players.
|Keywords||validity; reliability; monitoring; fitness|
|Journal||Science and Medicine in Football|
|Journal citation||3 (1), pp. 50-56|
|Publisher||Taylor & Francis|
|Digital Object Identifier (DOI)||https://doi.org/10.1080/24733938.2018.1475748|
|Research or scholarly||Research|
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File Access Level
|Online||15 May 2018|
|Publication process dates|
|Accepted||08 May 2018|
|Deposited||04 Jun 2021|
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