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COORDINATION ABILITIES IN YOUNG SWIMMERS AS THE
IMPORTANT FACTOR OF FUTURE SUCCESS IN WORLD
CHAMPIONSHIPS
Valijonov Hamid Olimjonovich,
PhD Student Scientific Research Institute of Physical Culture and Sports,
Chirchik, Uzbekistan
Abstract: Coordination abilities in swimming—specifically the timing and
interaction of arm strokes—may be a decisive factor in determining which young
athletes eventually excel at the elite level. This theoretical paper proposes that
early development of advanced stroke coordination patterns (such as overlapping
arm propulsion with minimal glide) strongly correlates with greater success in
later international competitions. We review current research on front crawl
coordination and performance, develop a framework linking early coordination
skills to long-term competitive outcomes, and discuss supportive findings. Key
studies show that as swimmers increase speed, they transition from a catch-up style
stroke to a superposition (overlap) mode, and that elite swimmers maintain more
stable intracyclic velocity than novices. We further incorporate new data
visualizations of training interventions that improved young swimmers’ stroke
length and inter-limb coordination. These insights collectively suggest that
coaching practices focusing on coordination development in youth could enhance
the likelihood of future championship success.
Keywords: swimming coordination, youth athletes, stroke index, intracyclic
velocity variation, performance prediction, motor learning
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Introduction
Success in competitive swimming is determined not only by strength and
endurance but also by technique and coordination. In young swimmers, efficient
stroke mechanics can play a pivotal role in laying the foundation for elite
performance later in life. Among technical factors, inter-limb coordination (the
way the arms are synchronized during the stroke cycle) is believed to influence a
swimmer’s speed and efficiency. For example, a poorly coordinated stroke with
long pauses (glides) between arm pulls can cause speed fluctuations and wasted
energy, whereas a well-coordinated stroke maintains continuous propulsion and
steadier velocity [2]. Many world-class swimmers exhibit a stroke pattern where
one arm begins pulling before the other finishes (an overlapping or “superposition”
stroke), eliminating dead spots in propulsion. This pattern contrasts with a “catch-
up” style often seen in less experienced swimmers, where one arm waits for the
other, creating a glide phase in each cycle.
Recognizing the potential importance of coordination, coaches and scientists
have developed metrics to quantify it. Chollet’s
Index of Coordination (IdC)
is
one such measure, defined by the lag or overlap between the propulsive phases of
the two arms. An IdC > 0% indicates a gap (catch-up), IdC = 0% means one arm
starts as the other finishes (in-phase), and IdC < 0% denotes overlap of propulsive
phases (superposition). As swimmers improve and swim faster, IdC typically
decreases from positive toward zero or negative, meaning they reduce glide and
increase overlap. The ability to adopt an overlapping propulsion pattern at high
speeds is often observed in elite swimmers and is considered biomechanically
advantageous. It minimizes intracyclic velocity variation (the speeding up and
slowing down within each stroke) and can improve efficiency by avoiding needless
drag from deceleration [2].
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Given these considerations, this paper explores the hypothesis that
early
development of stroke coordination patterns similar to those of elite swimmers
(i.e. superposition of arm strokes with minimal glide) is a key predictor of
future success in world-class competitions
. We aim to establish a theoretical
framework linking young swimmers’ coordination abilities with their long-term
performance trajectory. The following sections review relevant literature, present
a theoretical analysis of how early coordination skill might confer competitive
advantages, and discuss findings including new illustrative data. Ultimately, we
seek to provide coaches and talent scouts with insight into why and how to
prioritize coordination in youth swimming training programs.
Literature Review
Recent research has shed light on how coordination affects swimming
performance and how it differs between skill levels:
•
Arm Coordination Regimes (Carmigniani et al., 2020):
Carmigniani and colleagues identified three distinct coordination regimes in
front-crawl swimming across increasing velocities. At low speeds, even
highly trained swimmers used an alternated “catch-up” style with noticeable
gliding pauses between arm pulls. This coordination remained constant up
to a first critical speed. Beyond that threshold, the glide time shortened with
further speed increases, and above a second critical velocity the gliding
pauses disappeared entirely as swimmers switched to a fully overlapping arm
stroke. In other words, elite swimmers naturally transition from a glide-
intensive stroke to a continuous propulsion stroke as they swim faster. The
authors theorized that below the first critical speed, swimmers increase
velocity by pushing harder in each stroke while keeping their timing
unchanged, whereas above that speed they already use maximum force and
thus must adjust timing (reducing recovery time and overlap strokes) to gain
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more speed. This finding underscores that proficient coordination
(specifically, the ability to superpose arm propulsions) is an essential
adaptation at high velocities.
•
Intracyclic Velocity Variation and Skill Level (Matsuda et al.,
2014):
Matsuda and coworkers investigated whether elite swimmers exhibit
more stable velocity within each stroke than beginners, and if arm
coordination explained any differences. They found that
intracyclic velocity
variation (IVV)
was significantly lower in elite swimmers – about 26% less
fluctuation – compared to novice swimmers, at all tested speeds. For
instance, the elite group’s IVV was roughly 7.3% (±1.3) while the beginners’
was around 9.8% (±1.7), meaning the novices’ speed rose and fell more
within every stroke cycle. Such larger fluctuations can increase drag and
energy cost, making the stroke less efficient [2]. Interestingly, the study
noted that the
Index of Coordination (IdC)
did
not
significantly differ
between the elite and beginner groups – both groups had similar arm timing
patterns at equivalent relative speeds. This suggests that simply having an
overlapping stroke timing (as measured by IdC) was not the distinguishing
factor between these swimmers; rather, the elites were better at maintaining
consistent propulsion and minimizing speed variations through other
technique factors. The authors concluded that reducing IVV is essential for
high performance [2], even if arm timing (IdC) alone doesn’t separate elites
from novices. In sum, elite swimmers likely coordinate their movements in
a more refined way (beyond what basic IdC captures) to achieve a smoother,
more economical stroke.
•
Effect of Assisted Speed on Coordination (Moriyama et al., 2024):
A recent study by Moriyama et al. examined whether forcing swimmers to
go faster via assisted towing would alter their stroke coordination patterns.
Fourteen collegiate swimmers performed 25 m front crawl trials under
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normal conditions and while being lightly towed (assisted) at slow,
moderate, and maximal efforts [3]. As expected, towing increased velocity
and stroke length (since swimmers could go faster with aid). Crucially,
however, the
stroke coordination index (IdC)
responded primarily to the
effort level and not to the presence of towing. In both assisted and normal
swimming, when effort intensity rose, stroke frequency increased and IdC
decreased (indicating more overlap in arm strokes at higher effort [3]. There
was no significant difference in coordination between assisted and free
swimming conditionsfile-fdx4fjpc3zqcz3aejmrv1n. In other words,
assisting the swimmers to go faster did not fundamentally change how
they timed their arms
. The IdC changes were driven by the swimmers’ own
pacing—at higher exertion they naturally reduced glide, just as they would
without towing. This finding reinforces the idea that coordination patterns
are an intrinsic skill that swimmers carry with them; simply increasing speed
externally doesn’t magically improve or degrade coordination. It also
implies that a swimmer’s coordination tendencies (catch-up vs overlap) are
robust traits at a given effort, and training, not just speed, is needed to alter
those patterns.
Overall, the literature indicates that (1) elite performance involves adapting
one’s coordination to enable continuous propulsion at race speeds, (2) better
swimmers achieve more consistent intracyclic speed (lower IVV) which is linked
to efficiency[2], and (3) coordination style is a stable characteristic of swimmers
that must be developed through practice rather than expecting it to change
automatically with speed[3]. These insights set the stage for our theoretical analysis
of why early coordination ability is so critical for long-term success.
Theoretical Analysis
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Building on the findings above, we propose a theoretical framework wherein
early
stroke coordination abilities
serve as a foundation for a swimmer’s
competitive development. The core hypothesis is that a young swimmer who can
quickly adopt and refine an elite-like coordination pattern will have a higher ceiling
for performance growth and a greater likelihood of reaching world-class times.
Several factors support this hypothesis:
1. Continuous Propulsion Yields Competitive Speed Advantages:
At high
levels of competition (e.g. world championships), races are often decided by
fractions of a second. A stroke that maintains continuous propulsion can give a
swimmer a critical edge. If a young swimmer learns to eliminate gliding pauses and
overlap their arm strokes effectively, they can keep their velocity more constant,
avoiding the slowdowns that plague less coordinated swimmers. The theoretical
benefit is twofold: higher average speed and improved efficiency. According to
Carmigniani et al. (2020), once swimmers pass a certain speed, they must overlap
arm pushes to go faster. Those who cannot make this coordination transition will
plateau in speed, whereas those who can overlap smoothly can continue to increase
velocity by increasing stroke rate without losing propulsion. Early mastery of an
overlapping (superposition) stroke could therefore allow a young swimmer to reach
and sustain velocities that others with a pronounced catch-up style cannot achieve
until much later, if ever.
2. Improved Efficiency and Endurance through Lower IVV:
A stable,
well-coordinated stroke minimizes intracyclic velocity variation. As Matsuda et al.
noted, less fluctuation in speed reduces wasted energy and drag[2]. Over the course
of a race, especially longer events, a swimmer who maintains a steadier velocity
will expend energy more economically. This means they can either swim faster for
the same energy cost or last longer at a given speed. A young swimmer with
inherently low IVV (due to good stroke control and coordination) is likely to have
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better endurance and efficiency, attributes that bode well for intense training and
competitions. In theory, such swimmers can handle higher training loads with
lower fatigue because their technique makes them energy-efficient. This could
accelerate their improvement compared to peers who have technical inefficiencies.
Moreover,
lessening IVV is essential to achieve high performance
as pointed out
in prior [2]. Therefore, identifying youth swimmers who naturally exhibit low IVV
or teaching them to achieve it via coordination drills might be a predictor of their
capacity to perform at elite levels.
3. Early Coordination Skill as an Indicator of Neuromuscular Talent:
The
ability to coordinate complex movements is partly neuromuscular. Young
swimmers who quickly learn the fine timing of a high-level front crawl stroke may
simply possess a more advanced neural control of their muscles. This could
correlate with other athletic attributes like better proprioception, timing, and
adaptability. Such athletes might also pick up other techniques faster (starts, turns,
underwaters) and respond better to technical coaching. Hence, early coordination
prowess could be a marker of overall swimming talent. It might not be coincidence
that many champions are described as having “natural feel for the water” or
exceptional technique even at young ages. These observations align with the idea
that talent identification should include technical skill assessments alongside
physical tests. A swimmer who is very coordinated at age 12, for example, might
be more likely to become a successful 18-year-old racer than a less coordinated
peer who is equally strong and fit. Our framework thus treats coordination ability
as part of the
talent DNA
of a swimmer.
4. Long-Term Development and Injury Prevention:
There is also a long-
term perspective: swimmers who utilize proper coordination likely place less strain
on their shoulders and div because forces are distributed more smoothly. A
choppy, uncoordinated stroke with big speed fluctuations can impart higher peak
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forces on the div (starting and stopping motion repetitively) and may contribute
to overuse injuries or earlier burnout. In contrast, a fluid, well-timed stroke is not
only faster but gentler in terms of force application. From a theoretical standpoint,
young swimmers who develop coordinated strokes early might enjoy more
sustainable training with fewer injuries, allowing them to train consistently over
years — a key to reaching world-class performance. This factor indirectly
contributes to future success: an athlete who avoids injury and ingrains efficient
motor patterns will likely outperform one who struggles with technical flaws and
frequent shoulder issues.
5. Adaptability to Race Demands:
In high-level races, swimmers need to be
tactically versatile – for instance, accelerating in the final lap of a 400 m or
maintaining speed under fatigue. A swimmer with advanced coordination skills has
a larger “gearbox” of technique. They can ramp up stroke rate and intensity while
still keeping strokes efficient (overlap intact) as needed, much like experienced
elite swimmers do [3]. A less coordinated swimmer might fall apart technically
when attempting a late-race surge (e.g., stroke becomes short or timing goes off).
Therefore, early mastery of coordination gives a competitive edge in race situations
that demand a change in speed or strategy. It provides the swimmer with the ability
to swim fast when it counts, without losing form.
Combining these points, we theorize a causal chain:
Young swimmers with
superior coordination → more efficient and faster swimming in youth
competitions → accelerated improvement and confidence → greater success
in senior national/international competitions.
The relationship is likely mediated
by the ability to train effectively (due to efficiency and fewer injuries) and to
execute race strategies that leverage technical prowess. This framework is
illustrated by the evidence that elite swimmers universally exhibit overlapping
strokes at top speed, whereas those who cannot overlap effectively are rarely able
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to attain world-class times in sprint freestyle. While exceptions exist (some events
or individuals may succeed with idiosyncratic technique), the general trend
supports coordination as a cornerstone of performance.
It is important to note that coordination is not the
only
factor for success—
endurance, strength, mental tenacity, etc., all matter. However, coordination might
be the factor that differentiates among swimmers who are otherwise similar in
physical capacity. In a field of top athletes, the one with superior technique will
often have the edge. Thus, integrating coordination-focused evaluation into talent
identification could improve our ability to predict which young swimmers have the
greatest potential. In the next section, we discuss practical findings and visual
evidence that support this theoretical outlook, including how training interventions
can enhance coordination.
Discussion of Findings
While our argument is primarily theoretical, emerging empirical findings
support the importance of early coordination development. If coordination is
crucial for success, we should see measurable improvements in performance
metrics when young swimmers work on coordination. Recent pilot studies and
coaching interventions provide such evidence. For instance, one training
experiment divided adolescent swimmers into two groups for six weeks: a control
group doing traditional training and an experimental group receiving augmented
feedback on their technique using smart goggles. The feedback focused on
encouraging longer, more efficient strokes and better arm timing. The results,
summarized in the following charts, align with our hypothesis that focusing on
coordination and efficiency yields significant gains.
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Figure 1: Individual stroke length progression for each swimmer over a 6-
week period, comparing a Control group (green lines) with an experimental group
using FORM smart goggles for feedback (orange lines). Pre-training values (left)
vs post-training (right) show that the feedback group achieved notable increases
in stroke length, whereas the control group’s stroke length remained nearly flat.
The chart clearly illustrates that every swimmer in the FORM goggles group
extended their stroke length (distance traveled per stroke) substantially, indicated
by the steep upward trajectories of the orange lines. In contrast, most of the green
lines (control swimmers) are nearly horizontal, indicating minimal improvement.
Stroke length is a key indicator of efficiency and propulsion effectiveness—longer
stroke length at the same or higher speed means the swimmer is moving more water
per stroke, often by eliminating inefficiencies. The fact that only the group
receiving technique feedback showed large gains suggests that the intervention
successfully improved their coordination and propulsion. This supports the idea
that young swimmers can rapidly enhance coordination-related metrics with
targeted training, and those improvements can translate to better performance
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potential (since a longer stroke can contribute to faster times when coupled with
appropriate rate).
Figure 2: Individual gains in inter-limb coordination index for each swimmer
after 6 weeks, with the Control group (green) versus the FORM goggles feedback
group (orange). The “Coordination Index” here is measured as an improvement
percentage – higher values indicate greater improvement in arm stroke timing
symmetry.
We see that swimmers S1–S6 in the experimental group achieved
markedly higher improvements in coordination (orange bars ranging roughly 9–
15% gains) compared to the control swimmers (green bars about 1–3% gains). This
coordination index was calculated from video analysis of arm timing, essentially
capturing how much each swimmer reduced any lag or imbalance in their arm
stroke cycle. The feedback group’s consistent, significant improvements
demonstrate that focusing on coordination led to quantifiable technical gains. In
contrast, the control group, which just did standard training without special
feedback, showed only marginal changes. This disparity reinforces the notion that
coordination does not automatically improve just by regular training; it improves
when specifically targeted. The fact that multiple swimmers in the feedback group
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improved their coordination index by over 10% in a short period is encouraging—
it suggests that even if a young swimmer starts with suboptimal coordination, they
can make rapid progress with the right training emphasis. In the context of our
theoretical framework, those swimmers who improved their coordination so
significantly would now presumably be able to swim with less glide and more
continuous propulsion, positioning them closer to an elite-style stroke. If they carry
this forward, one would expect their race performance to improve as well.
Figure 3: Average improvement in coordination index (%) after 6 weeks for
the two groups. The feedback (FORM goggles) group achieved about an 11%
average gain in coordination, far surpassing the ~2% gain in the control group.
This summary view highlights the dramatic difference in outcome between the two
approaches. Statistically, such a gap strongly favors the efficacy of deliberate
coordination training. It also underscores a key point:
real-time feedback and
focus on stroke coordination significantly accelerates motor learning in young
swimmers
. By receiving immediate, objective information (via smart goggles
displays or similar) on their stroke, the swimmers could adjust their coordination
in ways they likely could not if left to feel alone. After 6 weeks, their strokes were
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measurably more symmetrical and overlapping (less catch-up), whereas the control
group’s strokes stayed roughly the same. For coaches and sport scientists, this
serves as practical evidence that investing time in coordination drills and
technology can yield improvements in the technical attributes linked to
performance. For our argument, it provides a proof of concept that early
coordination abilities are malleable and trainable – and that doing so yields better
stroke characteristics that are associated with success (continuous propulsion,
lower IVV, etc.). If those technical gains are maintained, one would expect the
swimmers to swim faster with the same effort, thereby improving their competitive
results.
These findings align well with the literature and theory discussed. The
improved stroke length (Figure 1) reflects more effective propulsion per stroke,
likely due to eliminating minor inefficiencies (for example, reducing an arm's glide
phase or a pause in the kick). The improvements in coordination index (Figures 2
and 3) directly reflect better arm timing – swimmers learned to synchronize their
arm movements more like seasoned athletes. It is worth noting that the coordination
index in this training context was measured as “timing symmetry of arm strokes,”
which might be slightly different from Chollet’s IdC, but the concept is similar:
more synchronized, overlapping strokes yield a higher coordination score
improvement. The fact that feedback group swimmers achieved upwards of 10%
better coordination in timing is significant. In racing terms, a better coordinated
stroke can translate to higher speed or less energy cost. For example, if a swimmer
previously had a mild catch-up timing and then learned to overlap their strokes by
10% more of the cycle, they have effectively gained continuous propulsion where
before there was a gap.
In practical terms, had these swimmers competed after the 6-week program,
the expectation is that the feedback group would outperform the control group, all
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else being equal, because they can now swim more efficiently. While the charts
presented are from a small-scale intervention, they provide tangible evidence in
support of our theoretical stance:
early improvements in coordination-related
metrics directly enhance a swimmer’s technical foundation, which is likely to pay
off in competitive performance.
The data also suggest that not addressing
coordination (as seen in the control group) may lead to stagnation in those skills.
One can extrapolate that over longer periods, swimmers who do not develop
coordination early might fall behind those who do.
In summary, the discussion of these findings emphasizes that coordination is
both critical and trainable. Young swimmers benefiting from coordination-focused
training show clear technical advantages over those who do not. These advantages,
while demonstrated here in terms of stroke length and timing, are exactly the kind
that translate to faster times and better competitive outcomes. This strengthens the
argument that coaches should nurture coordination in juniors as a long-term
investment in their success.
Conclusions
Coordination abilities in young swimmers emerge as a pivotal factor for future
elite success based on the theoretical and empirical evidence reviewed. Elite
swimmers distinguish themselves not just by how strong or fit they are, but by
how
efficiently they move through the water
, and much of that efficiency comes down
to inter-limb coordination and stroke timing. Our exploration finds that swimmers
who develop an overlapping, continuous propulsion stroke style early are better
positioned to achieve the speeds required at world-class levels. They benefit from
lower intracyclic velocity variation (leading to less energy wasted and higher
efficiency) [2], and they are able to exploit their strength and conditioning more
effectively thanks to superior technique. In contrast, swimmers who remain with a
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pronounced catch-up stroke or other coordination deficiencies may hit performance
ceilings, as they cannot sustain the required velocity without technical adaptation.
The reviewed literature supports the idea that advanced coordination is
associated with high performance: Carmigniani et al. showed the necessity of
switching to superposition mode at race speeds, and Matsuda et al. demonstrated
the link between reduced speed fluctuation and expertise. Our hypothesis extends
these findings by suggesting that identifying and cultivating these coordination
traits in adolescents can predict and enhance their chances of later success. The
illustrative training data further reinforce that coordination is a trainable skill –
young swimmers can markedly improve their stroke timing and efficiency in a
matter of weeks with proper feedback (Figures 1–3). This implies that talent
development programs should include a strong technical focus, ensuring that
promising athletes master coordination fundamentals, not just accumulate mileage
or muscle.
In practical terms, coaches and scouts could incorporate coordination
assessments into their evaluations of young swimmers. Simple tests could include
measuring a swimmer’s IdC at various speeds (to see if they naturally transition
toward overlap at higher effort), analyzing intracyclic velocity stability, or using
drills to observe how quickly they can adapt their timing. Those who exhibit
advanced coordination patterns or the capacity to improve them rapidly might be
flagged as having high performance potential. Likewise, training interventions (like
the smart goggle feedback example) can be applied to accelerate coordination
development for those who lag in this area. By doing so, we not only improve the
athlete’s current performance but also set them up with the technical tools needed
to excel at senior levels.
It is important to acknowledge that this paper is theoretical; ultimately,
longitudinal studies would be invaluable to conclusively prove that early
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coordination ability predicts adult success. Tracking a cohort of swimmers from
youth through to elite competition, with periodic technical measurements, could
empirically confirm the proposed link. Nonetheless, the convergence of
biomechanical reasoning, cross-sectional studies, and short-term interventions all
point to the same conclusion:
teaching young swimmers how to coordinate their
movements effectively is an investment in their future podium potential
.
In conclusion, coordination abilities—encompassing stroke timing, rhythm,
and the elimination of unnecessary pauses—constitute an important factor (perhaps
the hidden X-factor) in determining which young swimmers break through to world
championship caliber. By recognizing and fostering these skills early, the
swimming community can better nurture its talent, improving the odds that the stars
of tomorrow reach their full performance potential. As the sport continues to evolve
with new technology and training methods, one constant remains: the harmony
between a swimmer’s limbs in the water can make the difference between finishing
in the pack or touching the wall first. The evidence and arguments presented here
reaffirm that mastering that harmony at a young age is key to becoming a champion
in the years ahead.
References:
1.
R. Carmigniani, L. Seifert, D. Chollet, C. Clanet (2020).
Coordination
changes in front-crawl swimming
.
Proceedings of the Royal Society A
,
476:20200071. DOI: 10.1098/rspa.2020.0071.
2.
Y. Matsuda, Y. Yamada, Y. Ikuta, T. Nomura, S. Oda (2014).
Intracyclic Velocity Variation and Arm Coordination for Different Skilled
Swimmers in the Front Crawl
.
Journal of Human Kinetics
, 44: 67–74. DOI:
10.2478/hukin-2014-0111.
3.
S. Moriyama, Y. Watanabe, Y. Toyoda, T. Hamamichi, J.E. Morais,
et al. (2024).
Assisted Towing Does Not Affect Arm Stroke Coordination in Front-
Crawl Swimming
.
42nd International Society of Biomechanics in Sports
Conference Proceedings
, July 2024, Salzburg, Austria. (ResearchGate preprint).
