The use of standardised runs (and associated data analysis) to monitor neuromuscular status in team sports players: a call to action
The increased occurrence of congested fixtures in professional team sports has amplified the need for player monitoring (1). While practitioners need to ensure players’ readiness on a daily basis, match participation results in transient subjective, biochemical, metabolic and neuromuscular perturbations over hours and days (2,3). […] To overcome those challenges, standardised runs have been proposed as an alternative to jump variations as they can be easily implemented during training sessions on the pitch such as during warm-ups, with all players being tested at once.
LEDUC C., LACOME M., BUCHHEIT M.
Sport Performance & Science Reports. 2020 Aug. #117
Force-velocity profiling with GPS: is it reliable?
While the potential of GPS devices to assess force-velocity profiles seems promising, the reliability of this approach is yet to be investigated. Therefore, the aim of the present study was to assess the reliability of force-velocity profile key variables (F0, V0 and maximal Power) assessed via GPS. […] These findings are very important for practitioners who want to assess force-velocity profiles routinely but are constrained due to training schedules. Indeed, the present methodology allows for the testing of a full team within a training session (e.g. 2*40m sprint altogether at the end of a warm-up) instead of the usual 90 min required using traditional methods (e.g. timing gates, radar gun).
LACOME M. OWEN C., PEETERS A., PISCIONE J., LEMEUR Y., LEDUC C.
Sport Performance & Science Reports. 2020 Jul. #115
Validity of an ultra-wideband local positioning system to assess specific movements in handball
The aim of this study was to examine the concurrent validity of the Kinexon local positioning system (LPS) in comparison with the Vicon motion capture system used as the reference. […] The ultra-wideband based (UWB) local positioning system had acceptable validity compared with Vicon to assess players’ movements in handball with the exception of high accelerations and decelerations during linear sprints on the side of the field.
FLEUREAU A., LACOME M., BUCHHEIT M., COUTURIER A., RABITAT G.
Biol. Sport. 2020 July
Convergent Validity, Reliability, and Sensitivity of a Running Test to Monitor Neuromuscular Fatigue
The aim of this research was to investigate the convergent validity, reliability and sensitivity over a week of training of a standardized running test to measure neuromuscular fatigue. [...] This study showed that RLI is a practical method to measure neuromuscular fatigue. Additionally, such a methodology aligns with the constraint of elite team sport set up due to its ease of implementation in practice.
LEDUC C., TEE J., LACOME M., WEAKLEY J., CHERADAME J., RAMIREZ C., JONES B.
Int J Sports Physiol Perform. 2020 Jul 8;1-7
In-Match Physical Performance Fluctuations in International Rugby Sevens Competition
The aim of this study was to assess fluctuations in physical performance (running and contact loads) in international rugby sevens competition. […] Findings showed: 1) a small decrease in high-speed distance and number of accelerations performed during the second- versus the first-half of play suggesting a decline in running performance. (2) a moderately higher total distance and high-speed distance covered during the first and final 1-min period compared to the average for other 1-min periods, suggesting a specific reverse ‘J-shape’ pacing profile 3) a most likely decrease in total distance, high-speed running, and to a lesser extent the number of accelerations declined following the peak 1-min period of the game.
PEETERS A., CARLING C., PISCIONE J., LACOME M.
J Sports Sci Med. 2019 Aug 1;18(3):419-426. eCollection 2019 Sep.
Monitoring of Post-match Fatigue in Professional Soccer: Welcome to the Real World
Participation in soccer match-play leads to acute and transient subjective, biochemical, metabolic and physical disturbances in players over subsequent hours and days. Inadequate time for rest and regeneration between matches can expose players to the risk of training and competing whilst not entirely recovered. […] In relation to professional soccer contexts, this opinion paper intends to (1) debate the need for post-match fatigue monitoring; (2) critique the real-world relevance of the current research literature; (3) discuss the practical burden relating to measurement tools and protocols, and the collection, interpretation and application of data in the field; and (4) propose future research perspectives.
CARLING C., LACOME M., McCALL A., DUPONT G., LE GALL F., SIMPSON B.M, BUCHHEIT M.
Sports Med. 2018 Dec;48(12):2695-2702. doi: 10.1007/s40279-018-0935-z.
Monitoring players’ readiness using predicted Heart Rate responses to football drills
To examine the ability of multivariate models to predict the HR responses to some specific training drills from various GPS variables and to examine the usefulness of the difference in predicted vs actual HR responses as an index of fitness or readiness to perform.[…] HR Index is a valid variable to monitor elite soccer players’ fitness and allows fitness monitoring on a daily basis during normal practice, decreasing the need for formal testing.
LACOME M., SIMPSON B.M., BROAD N., BUCHHEIT M.
Int J Sports Physiol Perform. 2018 Nov 1;13(10):1273-1280. doi: 10.1123/ijspp.2018-0026. Epub 2018 Nov 20.
Workload, fatigue and muscle damage in an u20 rugby union team over an intensified international tournament
This study examined the effects of an intensified tournament on workload, perceptual and neuromuscular fatigue and muscle damage responses in an international under-20 rugby union team.[…] These results suggest that irrespective of exposure time to match-play players generally maintained performance and readiness to play across the intensified tournament. These findings support the need for holistic systematic player monitoring programmes.
LACOME M., CARLING C., HAGER J.P., G. DINE, PISCIONE J.
Int J Sports Physiol Perform. 2018 Sep 1;13(8):1059-1066. doi: 10.1123/ijspp.2017-0464. Epub 2018 Sep 9.
Exposure time, running and skill-related performance in international u20 rugby union players during an intensified tournament
This study investigated exposure time, running and skill-related performance in two international u20 rugby union teams during an intensified tournament: the 2015 Junior World Rugby Championship. […] These findings suggest that despite high availability for selection, players were not over-exposed to match-play during an intensified u20 international tournament. They also imply that the teams coped with the running and skill-related demands. Similarly, individual players with the highest exposure to match-play were also able to maintain skill-related performance and end-match running output (despite an overall reduction in the latter). These results support the need for player rotation and monitoring of performance, recovery and intervention strategies during intensified tournaments.
CARLING C., LACOME M., FLANAGAN E., O’DOHERTY P., PISCIONE J.
PLoS One. 2017 Nov 14;12(11):e0186874. doi: 10.1371/journal.pone.0186874. eCollection 2017.
Neuromuscular responses to conditioned soccer sessions assessed via GPS-embedded accelerometers: Insights into Tactical periodization
To examine the reliability of field-based running-specific measures of neuromuscular function assessed using global positioning system (GPS)-embedded accelerometers and their responses to 3 typical conditioned sessions (ie, strength, endurance, and speed) in elite soccer players.[…] Running-specific measures of neuromuscular function assessed in the field via GPS-embedded accelerometers show acceptable levels of reliability. Although the 3 sessions examined may be associated with limited neuromuscular fatigue, changes in neuromuscular performance and propulsion efficiency are likely session-objective dependent.
BUCHHEIT M., LACOME M., CHOLLEY Y., SIMPSON B.M.
Int J Sports Physiol Perform. 2018 May 1;13(5):577-583. doi: 10.1123/ijspp.2017-0045. Epub 2018 May 22.
Movement Patterns and Metabolic Responses During an International Rugby Sevens Tournament
To investigate the running demands and associated metabolic perturbations during an official rugby sevens tournament. […] Significant alterations in blood-metabolite indices from prematch to postmatch sampling suggest that players were required to tolerate a substantial level of acidosis related to metabolite accumulation. In addition, the ability to produce energy via the glycolytic energy pathway seems to be a major determinant in match-related running performance.
COUDERC A., THOMAS C., LACOME M., PISCIONE J., ROBINEAU J., DELFOUR-PEYRETHON R., BORNE R., HANON C.
Int J Sports Physiol Perform. 2017 Aug;12(7):901-907. doi: 10.1123/ijspp.2016-0313. Epub 2016 Dec 5.
Small-Sided Games in elite soccer: Does one size fit all?
To compare the peak intensity of typical small-sided games (SSGs) with those of official matches in terms of running demands and mechanical work (MechW) over different rolling average durations and playing positions.[…] Peak locomotor intensity can be modulated during SSGs of various formats and durations to either overload or underload match demands, with 4v4 placing the greatest and the least emphasis on MechW and HS, respectively. Additionally, in relation to match demands central defenders and central midfielders tend to be the most and least overloaded during SSGs, respectively.
LACOME M., SIMPSON B.M., CHOLLEY Y., LAMBERT P., BUCHHEIT M.
Int J Sports Physiol Perform. 2018 May 1;13(5):568-576. doi: 10.1123/ijspp.2017-0214. Epub 2018 May 26.
Concurrent training in Rugby Sevens: effects of High-Intensity Interval Exercises
To assess the impact of 2 high-intensity interval-training (HIT) programs (short interval vs sprint interval training) on muscle strength and aerobic performances in a concurrent training program in amateur rugby sevens players.Thirty-six amateur rugby sevens players were randomly assigned to strength and short interval training (INT), strength and sprint interval training (SIT), or a strength-only training group (CON) during an 8-wk period. […] The study did not emphasize interference on strength development after INT but showed a slight impairment of slow concentric torque production gains after SIT. Compared with INT, SIT would appear to be more effective to develop VO2peak and RSA but could induce lower muscle-strength gains, especially at low velocity.
ROBINEAU J., LACOME M., PISCIONE J., BIGARD X., BABAULT N.
Int J Sports Physiol Perform. 2017 Mar;12(3):336-344. doi: 10.1123/ijspp.2015-0370. Epub 2016 Aug 24.
Quantifying neuromuscular fatigue induced by an intense training session in rugby sevens
To compare the sensitivity of a sprint vs a countermovement-jump (CMJ) test after an intense training session in international rugby sevens players, as well as analyze the effects of fatigue on sprint acceleration.[…] The CMJ test appears to be less sensitive than the sprint test, which casts doubts on the usefulness of a vertical-jump test in sports such as rugby that mainly involve horizontal motions. The decline in sprint performance relates more to a decrease in velocity than in force capability and is correlated with the distance covered at high intensity.
MARRIER B., LE MEUR Y., ROBINEAU J., LACOME M., COUDERC C., HAUSSWIRTH J., PISCIONE J., MORIN JB.
Int J Sports Physiol Perform. 2017 Feb;12(2):218-223. doi: 10.1123/ijspp.2016-0030. Epub 2016 Aug 24.
Analysis of running and technical performance in substitute players in international male rugby union competition
To investigate the patterns and performance of substitutions in 18 international 15-a-side men’s rugby union matches. A semiautomatic computerized time-motion system compiled 750 performance observations for 375 players (422 forwards, 328 backs). […] The impact of substitutes on technical performance was generally considered unclear. This information provides practitioners with practical data relating to the physical and technical contributions of substitutions that subsequently could enable optimization of their impact on match play.
LACOME M., PISCIONE J., HAGER, J.P., CARLING C.
Int J Sports Physiol Perform. 2016 Sep;11(6):783-792. doi: 10.1123/ijspp.2015-0191. Epub 2016 Aug 24.
Specific training effects of concurrent aerobic and strength exercises depend on recovery duration
This study aimed to determine whether the duration (0, 6, or 24 hours) of recovery between strength and aerobic sequences influences the responses to a concurrent training program. […] Our study emphasized that the interference on strength development depends on the recovery delay between the 2 sequences. Daily training without a recovery period between sessions (C-0h) and, to a lesser extent, training twice a day (C-6h), is not optimal for neuromuscular and aerobic improvements. Fitness coaches should avoid scheduling 2 contradictory qualities, with less than 6-hour recovery between them to obtain full adaptive responses to concurrent training.
ROBINEAU J., BABAULT N., PISCIONE J., LACOME M., BIGART A.X.
J Strength Cond Res. 2016 Mar;30(3):672-83. doi: 10.1519/JSC.0000000000000798.
A new approach to quantifying physical demand in rugby union
The objective of the study was to describe an original approach to assessing individual workload during international rugby union competitions. The difference between positional groups and between the two halves was explored. […] The analysis of results emphasised the specific activity of back rows and tended to suggest that the players’ combinations of action and recovery times were optimal for preventing large decrease in the physical performance.
LACOME M., PISCIONE J., HAGER J.P., BOURDIN M.
J Sports Sci. 2014;32(3):290-300. doi: 10.1080/02640414.2013.823225. Epub 2013 Sep 9.
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