Background: Efforts are needed to improve antidoping procedures. The widespread use of power meters among cyclists could help in this regard. However, controversy exists on whether performance monitoring through power-output data could be of help for antidoping purposes. Purpose: The objective of the present study was to provide insight into the feasibility and utility of implementing power-based performance monitoring in elite cycling. An expert panel of 15 applied sport scientists and professional cycling coaches were asked for their opinions and perspectives on incorporating power data into the antidoping risk-assessment process. Results: Two different viewpoints were identified from the responses provided by the experts. Some believed that power monitoring could be implemented as an antidoping tool, provided that several surmountable challenges are first addressed. These authors provided suggestions related to the potential practical implementation of such measures. Others, on the contrary, believed that power meters lack sufficient reliability and suggest that the professional cycling world presents conflicts of interest that make this intervention impossible to implement nowadays. Conclusions: The debate around the utility of power-meter data in the antidoping fight has been ongoing for more than a decade. According to the opinions provided by the experts’ panel, there is still no consensus on the real utility and practical implementation of this intervention.
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Antidoping 2.0: Is Adding Power-Output Data to the Antidoping Pool the Next Step? Experts’ Viewpoint
Sebastian Sitko, Pedro Valenzuela, Nathan Townsend, Marco Pinotti, Mikel Zabala, Xabier Artetxe, Gabriele Gallo, Manuel Mateo-March, Dajo Sanders, Frédéric Grappe, David C. Clarke, Teun van Erp, and Aitor Viribay
Effects of Foot-Strike Pattern on Neuromuscular Function During a Prolonged Graded Run
Gianluca Vernillo, Matheus Aguiar, Aldo Savoldelli, Aaron Martinez, Marlene Giandolini, Nicolas Horvais, W. Brent Edwards, and Guillaume Y. Millet
Purpose: To study whether, during typical-level running, non-rear-foot strikers (non-RFS) or rear-foot strikers (RFS) presented a similar or different extent of neuromuscular fatigue after a prolonged graded run. Methods: Sixteen experienced male trail runners (8 non-RFS and 8 RFS) performed a 2.5-hour treadmill graded running exercise. Before and after exercise, neuromuscular tests were performed to assess neuromuscular fatigue of the plantar flexors. Biomechanical gait parameters were acquired with an instrumented treadmill, and electromyographic activity of the lower-limb muscles was collected as an index of muscle activation. Results: There were no significant time × foot strike interactions for neuromuscular (all P ≥ .742), muscle activation (all P ≥ .157), or biomechanical (all P ≥ .096) variables. Conclusions: A dominant level running foot-strike pattern did not directly affect the extent of neuromuscular fatigue during a prolonged graded run. This suggests that no ideal running foot-strike pattern exists to minimize neuromuscular fatigue during prolonged-duration races wherein cumulative uphill and downhill segments are high, such as in trail running.
Self-Paced Field Running Test in Monitoring Fatigue and Training Adaptations in Recreational Runners
Olli-Pekka Nuuttila, Arja Uusitalo, Veli-Pekka Kokkonen, and Heikki Kyröläinen
Purpose: To examine the reproducibility and sensitivity of a self-paced field running test (SFT) in monitoring positive and negative changes in endurance performance. Methods: A total of 27 (11 women) recreational runners participated in a 6-week training intervention. The intervention was divided into a 3-week baseline period, a 2-week overload period, and a 1-week recovery period. An incremental treadmill test was performed before the baseline period and a 3000-m running test before and after all periods (T1–T4). In addition, the participants performed once a week an SFT (SFT1–6), which consisted of submaximal (6 + 6 + 3-min test at perceived exertion of 9/20, 13/20, and 17/20) and maximal sections (6 × 3-min intervals at maximum sustainable effort). The associations between the incremental treadmill test and the SFT1 performance were examined with the Pearson correlation, and the intraclass correlation was analyzed for the parameters of SFT1 to SFT3 sessions during the baseline period. The repeated-measures correlation was calculated for the 3000-m speed at T1 to T4 and the corresponding speeds at SFT. Results: Significant associations (r = .68–.93; P < .001) were found between the speeds of the SFT and the peak and lactate threshold speeds of the incremental treadmill test. Intraclass correlations varied between .77 and .96, being the highest for the average speed of 6 × 3-minute intervals. Repeated-measures correlation was significant (P < .05) for the 9/20 (r = .24), 13/20 (r = .24), and 6 × 3-minute intervals (r = .29). Conclusions: The SFT seemed a reproducible method to estimate endurance performance in recreational runners. The sensitivity to track short-term and small-magnitude changes in performance seems more limited and might require more standardized conditions.
APAQ at Forty: Publication Trends
Jeffrey J. Martin
The purpose of the present study was to analyze Adapted Physical Activity Quarterly (APAQ) publications over the journal’s fourth decade (2014–2023) and compare them with previous documentary analyses of the first 3 decades. Consistent with prior documentary analyses, publications were coded and analyzed based on the use of theory, research participants, topic, whether the study was an intervention, first-author country affiliation, and research method. The total number of published research papers increased substantially (n = 61) from the third to the fourth decade. Similar to prior documentary analyses, most of the research was quantitative (n = 140; 57.5%), followed by qualitative research (n = 96; 39.5%). There were far more qualitative-research publications in the fourth decade compared with the third decade (n = 34). This may reflect the continued acceptance and growth of qualitative research compared with 10–20 years ago. It may also reflect the value of rich in-depth exploratory research using small samples. Additional trends included more review papers and meta-analyses, possibly reflecting the increased knowledge base in particular areas requiring synthesis. The diversity of topics also increased, with papers on dignity, classification, coaching, and the Paralympics playing more prominent roles. The number of international publications also grew substantially. In brief, the current paper outlines both similarities and differences in APAQ’s published research over the 4 decades of its existence.
The Effect of a Newly Developed Hand Rim on Mobility Performance and Propulsion Technique in Wheelchair Tennis Players
Thomas Rietveld, Rowie J.F. Janssen, Lucas H.V. van der Woude, Riemer J.K. Vegter, and Sonja de Groot
Purpose: To investigate the effect of a newly developed hand rim in wheelchair tennis players from a lab and field perspective. Methods: Nine wheelchair tennis players performed a set of field and lab tests with the new rim (NR) and regular rim on the racket side. Each player had a 60- to 120-minute regular training session with the NR. Three wheelchair tennis field tests (20-m sprint, Illinois, spider) were completed on a hard court using inertial measurement units. The inertial measurement units enabled analysis of linear/rotational velocity and acceleration. In the lab, two 4-minute submaximal tests (at 1.5 and 2 m/s, 0.2 W/kg), followed directly by a 5-second sprint, on a wheelchair ergometer were completed. Force and velocity were measured continuously throughout all tests. Mixed linear models investigated the effect between the 2 hand rims. Results: During the spider test, mean rotational velocity to the racket side (−2%, P = .005) was lower in the NR, and end times were similar between hand-rim conditions. No differences were observed in the 20-m sprint and Illinois field tests. In the lab, contact angle (+6%, P = .04), cycle time (+12%, P = .007), and work per push (+13%, P = .005) were higher in the NR during submaximal propulsion. Work per push (+13%, P = .007), peak velocity (+3%, P < .001), and distance covered (+4%, P = .02) were higher with the NR during the 5-second sprint test. Conclusions: The NR seems slightly favorable compared with the regular rim during performance testing on a wheelchair ergometer in wheelchair tennis players. A longer practice time might show more insights between the hand-rim types.
The Effect of Water Dousing on Heat Strain and Performance During Endurance Running in the Heat
Mitchell Anderson, Clint Bellenger, Georgia K. Chaseling, and Samuel Chalmers
Objectives: Assess the effect of water dousing on heat strain and performance during self- and fixed-paced exercise in the heat.
Design: Crossover, block-randomized controlled trial.
Methods: Thirteen trained runners completed a 10-km time trial (TT) and 60-minute fixed-pace run (60% velocity of
Female Athlete Sport Science Versus Applied Practice: Bridging the Gap
Richard J. Burden, Anita Biswas, and Anthony C. Hackney
Background: Female-specific science, medicine, and innovation have grown steadily since the turn of the decade as the focus on female sport continues to advance. While this growth is welcome, and despite the best of intentions, it is not always coupled with valuable application. Purpose: This commentary discusses barriers faced when developing and applying sport-science research and innovation activities in female sport. We offer several practical solutions to help safeguard the progress of female athlete health and performance support. We make 3 suggestions: (1) multicenter studies to increase the number of elite athletes participating in research and enhance statistical power, which is often lacking in sport-science research; (2) further acceptance of case studies in elite sport research, as they can include context alongside athlete data that more traditional research designs perhaps do not; and (3) collaborative, codesigned approaches to research and innovation, wherein researchers, practitioners, and athletes all contribute to balancing scientific rigor with applied “real-world” understanding, which may result in the generation of richer, more meaningful knowledge for the benefit of female athletes and their environments.
Influence of Running Velocity and Hypoxic Exposure on Vastus Lateralis Muscle Oxygenation
Ming Wei Yeap, Tze Chien Loh, Mee Chee Chong, Wee Kian Yeo, Olivier Girard, and Chris Chow Li Tee
Purpose: We investigated the effects of manipulating running velocity and hypoxic exposure on vastus lateralis muscle oxygenation levels during treadmill running.
Methods: Eleven trained male distance runners performed 7 randomized runs at different velocities (8, 10, 12, 14, 16, 18, and 20 km·h−1), each lasting 45 seconds on an instrumented treadmill in normoxia (fraction of inspired oxygen [FiO2] = 20.9%), moderate hypoxia (FiO2 = 16.1%), high hypoxia (FiO2 = 14.1%), and severe hypoxia (FiO2 = 13.0%). Continuous assessment of Tissue Saturation Index (TSI) in the vastus lateralis muscle was conducted using near-infrared spectroscopy. Subsequently, changes in TSI (ΔTSI) data over the final 20 seconds of each run were compared between velocities and conditions.
Results:
There was a significant velocity × condition interaction for ΔTSI% (P < .001,
Pacing Demands in Competitive Nordic Skiing
Thomas Losnegard, Jan Kocbach, and Øyvind Sandbakk
Background and Purpose: Cross-country skiing, biathlon, and Nordic combined are Winter Olympics sports that involve cross-country skiing in undulating terrain, characterized by various subtechniques and repeated intensity fluctuations. The stochastic interval profile of these sports necessitates the continuous regulation of work and energy expenditure throughout training sessions and competitions, a concept known as pacing. With the advent of technological advancements that allow for the measurement of these features during training and competitions, scientific studies have broadened our understanding of the associated racing and pacing demands. We provide the current scientific overview of pacing demands in competitive cross-country skiing, biathlon, and Nordic combined and propose guidelines for how performance can be enhanced by adjusting pacing behavior. Conclusions and Practical Applications: The study of pacing in skiing has evolved from basic lap-to-lap, or segment, analyses to detailed insights into micropacing strategies. This includes analysis of speed, internal and external power, subtechnique distribution, and associated temporal patterns, combined with subjective ratings of effort. While several objective tools such as heart rate, blood lactate concentration, and speed measurements are widely used in practice, current understanding suggests that these measures should supplement, rather than replace, the use of perceived effort (eg, rating of perceived exertion) to regulate intensity during training and competition in undulating terrain. Therefore, the ability to self-regulate effort appears to be an important performance characteristic and should be developed in adolescents and systematically used to optimize and evaluate the training process and race performance throughout athletes’ careers.
Oral but Not Topical Sodium Bicarbonate Improves Repeated Sprint Performance During Simulated Soccer Match Play Exercise in Collegiate Athletes
William H. Gurton, Lewis A. Gough, Jason C. Siegler, Anthony Lynn, and Mayur K. Ranchordas
This study investigated the effect of oral and topical sodium bicarbonate (SB) on soccer-specific performance during simulated soccer exercise. In a block randomized, double-blind, crossover design, 10 collegiate male soccer players (stature: 181.7 ± 3.2 cm, body mass: 81.7 ± 10.5 kg) performed soccer-specific performance tests (countermovement jumps, Illinois agility, 8 × 25 m repeated sprints) throughout a 90-min soccer-specific aerobic field test (SAFT90) following 0.3 g/kg body mass SB in capsules (SB-ORAL), 0.9036 g/kg body mass PR Lotion (SB-LOTION), or placebo capsules and lotion (PLA). Soccer-specific performance tests were conducted pre-SAFT90, during half-time and post-SAFT90. Blood samples were analyzed for acid–base balance (pH; bicarbonate,
