Snippit is made possible by listeners like you.

Please help support the podcast:

► https://www.patreon.com/snippitscience 

 

We are very excited to have Alex Natera PhDc  on our podcast.  This is the first time we’ve brought in the author of the article to provide insight into their work. Chris and Alex first crossed paths in 2008, and they really enjoyed catching up.  Alex is putting some great content out on both Twitter @alex_natera and Instagram @alex.natera, so do yourself a favour and give him a follow. It is great to see someone continually improving their craft.

 

We aim to continue interviewing authors over time, so stayed tuned for our next guest author.  In the meantime, today’s podcast looks at how environmental conditions affect the 30-15IFT results.  Please enjoy:

 

 

J Strength Cond Res. 2019 Feb; 33(2):486-491

https://insights.ovid.com/crossref?an=00124278-201902000-00023

  

Influence of Environmental Conditions on Performance and Heart Rate Responses to the 30-15 Incremental Fitness Test in Rugby Union Athletes.

Natera AOW, Jennings J, Oakley AJ, Jones TW

 

Abstract

 

The purpose of this study was to examine the differences in performance and heart rate (HR) responses between a high heat outdoor condition (34.0° C, 64.1% humidity) and a temperate indoor condition (22.0° C, 50.0% humidity) during the 30-15 intermittent fitness test (30-15IFT).

 

Eight highly trained Rugby Union players (28.1 ± 1.5 years, 181.4 ± 8.8 cm, 88.4 ± 13.3 kg) completed the 30-15IFT in 2 different temperature conditions. Dependent variables recorded and analyzed included: final running speed of the 30-15IFT, HR at rest (HR rest), maximum HR (Max HR), HR recovery, average HR (HR ave), and submaximal HR corresponding to 25, 50, and 75% of final test speed (HR 25%, HR 50%, and HR 75%) and HR at 13 km·h (HR 13 km·h).

 

Greater running speeds were achieved when the test was conducted indoors (19.4 ± 0.7 km·h vs. 18.6 ± 0.6 km·h, p = 0.002, d = 1.67). Average HR and HR 13 km·h were greater when the test was conducted outdoors (p ≤ 0.05, d > 0.85). Large effect sizes were observed for the greater HR at submaximal intensities (d > 0.90).

 

The results of this study highlight the influence of temperature on 30-15IFT performance and cardiac responses. It is recommended that prescription of training based on 30-15IFT results reflects the temperature that the training will be performed in and that practitioners acknowledge that a meaningful change in assessment results can be the result of seasonal temperature change rather than training-induced change.

 

PMID: 28240715

DOI: 10.1519/JSC.0000000000001865

 

 

Please subscribe to Snippit:

 ► http://snippitscience.com

 ► https://snippitscience.podbean.com

 ► https://soundcloud.com/snippitscience

 ► http://bit.do/snippititunes

 ► http://bit.do/snippitspotify

 ► http://bit.do/snippityoutube

 ► http://bit.do/snippitnewsletter

 ► http://feed.podbean.com/snippitscience/feed.xml RSS

 

Explore our other content:

 ► https://bfrradio.podbean.com

 ► https://chrisgaviglio.com

 ► https://twitter.com/ChrisGaviglio

 ► https://twitter.com/Jared_CS

 

Follow SnippitScience on social media:

 ► https://twitter.com/snippitscience

 ► https://www.facebook.com/snippitscience

 ► https://www.instagram.com/snippitscience

 ► https://www.pinterest.com/snippitscience

 ► https://snippitscience.tumblr.com

 ► https://www.reddit.com/r/snippitscience

 ► https://snippitscience.wordpress.com

 

 

Please like, share, and comment below, subscribe at the top of the page, and help support the podcast:

► https://www.patreon.com/snippitscience 

 

Thank you for your support!