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Fitness testing is an important part of the pre-season player screening process. Depending on cultures and preferences, various submaximal or maximal tests are used in soccer, including continuous linear, continuous non-linear or intermittent non-linear (e.g., Yo-Yo and 30-15 Intermittent Fitness Tests, 30-15IFT) protocols. Among these, the 30-15IFT remains the only test that can mimic the physiological demands of most team and racket sports, and be used i) as a performance measure (peak test running speed, V_IFT), ii) to assess a players’ locomotor profile and iii) to improve high-intensity interval training (HIIT) prescription.

But a critical question for the practitioner remains: when is the best time to implement the 30-15IFT within the pre-season phase?

The aim of our paper, published in SPSR, was to describe a simple and effective way to program the 30-15IFT in relation to both session and weekly loads in an elite academy setting.

Figure 1. Physiological responses to the 30-15IFT based on the HIIT Science terminology (6), for an average test performance (peak speed reached, V_IFT) of 19.5 km/h. HR: heart rate. TD: total distance. HSR: high-speed running (>19.8 km/h), MW: mechanical work, RPE: rate of perceived exertion (0-10 scale). The range of values provided are directly linked to test performance (i.e., the faster the V_ITF, the longer the test and the greater the load), but also reflect individual variability in the response to a similar V_IFT.

Figure 2. Within-session example integrating the 30-15IFT. Drills 1: low-intensity possession games (with at least 6 to 8 players per team to decrease mechanical work. Drills 2: Tactical-oriented work such as directed games (the coach regularly stops the play to provide feedback to different player lines or different teams) or set pieces (for a TD of 3-4 km, no HSR and MW 20 a.u). Top up: additional 50-200m of HSR with low metabolic demands (HIIT Type 6 (6)) such as 2-4 x box-to-box runs within 12-15s interspersed with >30s of rest, with more repetitions for those not having performed above 19km/h at on the test.

Figure 3. Heart rate and locomotor load responses (with standard deviations) to the 7 pitch sessions of a first week microcycle in an elite academy. Non-pitch-based gym sessions were also programmed on some but not all days. The actual load of sessions 1-3 can be considered as low-to-moderate (low sRPE) in relation to typical in-season sessions (Table 1). The 30-15IFT was programmed on D4. The proportion of the session that arises from the 30-15IFT is shown by the pink arrows and circle. TD: total distance. HSR: high-speed running (>19.8 km/h), MW: mechanical work, sRPE: session rate of perceived exertion (0-10 scale). The main specific session contents are shown on the top of each day. SSG: small-sided games. Type 4 HIIT refers to the following HIIT Science terminology, and specifically to a sequence that involves a high contribution of both the aerobic and anaerobic (lactic) systems together with a strong neuromuscular load.

L’article Pre-season fitness testing in elite soccer: integrating the 30-15 Intermittent Fitness Test into the weekly microcycle est apparu en premier sur 30-15 IFT.

Here are below two selections of performances at the test across representative sports and playing standards for men and female athletes, respectively. What can be seen from the graph is that VIFT (the final velocity at the end of the test) tends to increase with age and playing standard, with the highest values recorded so far being those measured in national team players in soccer and field hockey for women, and AFL and national teams in field hockey and Rugby 7 for men. It is also important to see the spread of these data, confirming the fact that in team sport, even though it’s important to be fit, technique and tactic awareness are often of greater importance for success – and that players differing in fitness/VIFT performance can still preform in the same age group or at the same playing standard as their fitter teammates.

For more information on how to program high-intensity Intervall Training using the 30-15 IFT results, please visit HIIT Science !

L’article 30-15 IFT Performance across gender, age and playing standard est apparu en premier sur 30-15 IFT.

L’article The efficiency and versatility of the 30-15 Intermittent Fitness Test est apparu en premier sur 30-15 IFT.

• 20-yr review:  The 30-15 Intermittent Fitness Test – two decades of learnings
• 10-yr review: Buchheit – 30-15IFT – 10 yrs review (2000-2010)
• Variations in the protocol: Haydar-Assessing_COD_rec_with_30-15
• Pre-season fitness testing in elite soccer: integrating the 30-15 Intermittent Fitness Test into the weekly microcycle.
• Practical applications: Buchheit – 30-15IFT HotTopic NSCA
• Applications and training: Mosey – High-intensity interval training in youth soccer players – using fitness testing results practically

French

• 10 ans de pratique : Buchheit- 30-15IFT 10 ans (App HB 121-123 2011)
• Le 30-15IFT: M. Buchheit – Le 30-15 IFT – Approches du Handball M.  — Buchheit – le 30-15 IFT pour les adolescents (Revue EPS 321)
• Poster ACAPS 2005 – le 30-15 IFT
• La programmation de l’entrainement intermittent: M. Buchheit – Illustration de la programmation du travail intermittent Partie 1   —  M. Buchheit – Illustration… Partie 2 – Exemples d’intermittents courts
• Applications pratiques:  Haydar-Buchheit-Le 30–15IFT-pivot-12.09 – Copie
• Suivi de la performance en saison : M. Buchheit – Tests suivis en HB – Limoges 2007
• Relation 30-15IFt et RSA : M. Buchheit – Relation VIFT-RSA – Limoges 2007
• Variantes du test pour l’evaluation des qualites de recuperation et de changement de direction: Haydar-Buchheit-Le 30–15IFT-pivot-12.09 – Copie — Haydar-Assessing_COD_rec_with_30-15

L’article All 30-15IFT articles from the author in one post! est apparu en premier sur 30-15 IFT.

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PURPOSE: The aim of this study was to examine the reliability, validity and usefulness of the 30-15IFT in competitive female soccer players. METHODS: Seventeen elite female soccer players participated in the study. A within subject test-retest study design was utilized to assess the reliability of the 30-15 intermittent fitness test (IFT). Seven days prior to 30-15IFT, subjects performed a continuous aerobic running test (CT) under laboratory conditions to assess the criterion validity of the 30-15IFT. End running velocity (VCT and VIFT), peak heart rate (HRpeak) and maximal oxygen consumption (VO2max) were collected and/or estimated for both tests. RESULTS: VIFT (ICC = 0.91; CV = 1.8%), HRpeak (ICC = 0.94; CV = 1.2%), and VO2max (ICC = 0.94; CV = 1.6%) obtained from the 30-15IFT were all deemed highly reliable (p>0.05). Pearson product moment correlations between the CT and 30-15IFT for VO2max, HRpeak and end running velocity were large (r = 0.67, p=0.013), very large (r = 0.77, p=0.02) and large (r = 0.57, p=0.042), respectively. CONCLUSION: Current findings suggest that the 30 -15IFT is a valid and reliable intermittent aerobic fitness test of elite female soccer players. The findings have also provided practitioners with evidence to support the accurate detection of meaningful individual changes in VIFT of 0.5 km/h (1 stage) and HRpeak of 2 bpm. This information may assist coaches in monitoring ‘real’ aerobic fitness changes to better inform training of female intermittent team sport athletes. Lastly, coaches could use the 30-15IFT as a practical alternative to laboratory based assessments to assess and monitor intermittent aerobic fitness changes in their athletes.
Keywords: 30-15 intermittent fitness test, aerobic, cardiorespiratory fitness, intermittent activity, soccer, high intensity interval training.

L’article Reliability, validity and usefulness of 30-15 Intermittent Fitness Test in Female Soccer Players est apparu en premier sur 30-15 IFT.

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Peso – 30-15IFT at 2800m altitude

@danippeso

L’article 30-15IFT TEST at 2800 meters above sea level in professional football players est apparu en premier sur 30-15 IFT.

thanks Vince Kelly @VinceKellySport for his support with the test

L’article Changes in the 30-15 intermittent fitness test after two weeks of high intensity pre-season training in elite rugby league players est apparu en premier sur 30-15 IFT.

L’article The reliability and usefulness of the 30-15 Intermittent Fitness Test in Rugby League est apparu en premier sur 30-15 IFT.