Technical Challenges - Mister-butterfly.com

3Kg-dumbbell crawl

Muscles engaged

Scapular chain — The deltoid, shoulder rotators, and scapular stabilizers (trapezius, rhomboids, serratus anterior) are heavily activated.
Arm muscles — The biceps, triceps, and forearm muscles ensure grip and pulling strength with the dumbbell.
Latissimus dorsi — The latissimus dorsi provides most of the propulsion, amplified by the dumbbell’s resistance.
Core muscles — Abdominals, obliques, and lumbar muscles stabilize the body axis in the absence of leg kicks.
Pelvic stabilizers — Deep pelvic muscles maintain longitudinal alignment despite the asymmetry of the movement.

Functions and objectives

Unilateral strengthening — Working one arm at a time corrects asymmetries and improves segmental coordination.
Upper‑body‑only propulsion — The absence of kicks forces optimization of upper‑body pulling strength.
Core stabilization — The dumbbell crawl develops high axial stability.
Specific endurance — Prolonged effort strengthens muscular and cardiorespiratory endurance.
Proprioceptive work — The dumbbell alters support points in the water, improving movement perception and precision.

The corkscrew stroke with 3 Kg floating dumbbell

Muscles engaged

Scapular chain — I heavily recruit the deltoid, the shoulder rotators, and the stabilizing muscles of the scapula (trapezius, rhomboids, serratus anterior).
Arm muscles — The unilateral dumbbell work engages the biceps, triceps, and all forearm muscles responsible for grip and stabilization.
Latissimus dorsi — The pulling motion in the water, amplified by the dumbbell’s resistance, strongly activates the latissimus dorsi, essential for propulsion in the corkscrew stroke.
Core muscles — The absence of leg kicks requires continuous activation of the abdominals, obliques, and lumbar muscles to maintain alignment and counter rotational forces.
Pelvic stabilizers — Deep pelvic muscles ensure longitudinal stability of the body despite the asymmetry of the movement.

Functions and objectives of the exercise

Unilateral strengthening — By alternating right‑arm and left‑arm segments, I correct muscular asymmetries and improve segmental coordination.
Upper‑body‑only propulsion — The absence of leg kicks forces me to optimize upper‑body pulling strength.
Core stabilization — The corkscrew stroke develops high axial stability, essential for maintaining a straight trajectory.
Specific endurance — Over 1 km, the prolonged effort strengthens muscular and cardiorespiratory endurance under increased resistance.
Proprioceptive work — The floating dumbbell alters support points in the water, improving movement perception and precision.

Technical Challenges of a 2 km Butterfly Swim Without Leg Use

Arm‑Only Propulsion

Completing 2 km of butterfly without using the legs requires propulsion generated entirely by the upper body. The arms must produce 100% of the speed, which results in:

intense strain on the deltoids, pectorals, triceps, latissimus dorsi, rhomboids, and trapezius muscles;
rapid fatigue, as these muscles are not designed to replace the powerful thrust normally provided by the legs;
the need to maintain perfect stroke amplitude to avoid losing speed.

Maintaining Horizontal Body Position

Without leg kicks, the body naturally tends to sink. This requires continuous core engagement involving:

the deep abdominal muscles (transverse abdominis, obliques),
the lumbar muscles,
the pelvic stabilizers.

This stability is essential to maintain a proper line of flotation and prevent the “drag effect” caused by a sinking pelvis.

Butterfly Coordination Without Legs

Butterfly is normally a four‑phase movement: arm pull + body undulation + leg kick + breathing. Removing the legs means:

coordination becomes two‑phase, significantly more difficult;
each cycle must be perfectly synchronized to avoid rhythm disruption;
even a slight timing error leads to loss of speed and increased fatigue.

Breathing Under Motor Impairment Conditions

Breathing in butterfly without leg assistance is a major challenge:

the body does not naturally rise to the surface;
the swimmer must use arm strength alone to lift the head;
breathing must be short, precise, and perfectly synchronized with the stroke.

This requires elite‑level breath control.

Endurance Over 2 Kilometres

Swimming 2 km of butterfly is already rare among able‑bodied swimmers. Doing so without legs, without stopping, and at age 65 demonstrates endurance:

management of asymmetric muscular fatigue;
maintaining a steady pace for more than two hours;
preserving technique despite progressive exhaustion of the shoulders and back.

Pain Management and Injury Prevention

The absence of leg propulsion creates mechanical overload on:

the shoulders,
the cervical spine,
the thoracic spine,
the lumbar region.

A clean, economical technique and highly refined body awareness are essential to avoid injury.

Notes:

Very few swimmers worldwide complete 2 km of butterfly — even with full use of their legs.

Butterfly is widely considered the most demanding stroke in competitive swimming. It requires simultaneous arm recovery, powerful propulsion, precise body undulation, and exceptional breath control. At the Olympic Games, the longest butterfly event is only 200 metres — a reflection of how physically extreme this stroke is. No individual butterfly race exceeds 400 metres at elite level, underscoring its unique intensity and difficulty.

Butterfly Stroke Using Arms Only with Hand Paddles – 1 km Non Stop

Performance Characteristics

Style: butterfly stroke performed exclusively with the arms, without any leg propulsion.
Equipment: swimming hand paddles, increasing propulsion resistance by approximately 30 to 40%.
Distance: 1 km (1,000 meters).
Mode: continuous swimming, without stopping.
Location: Municipal Pool of Vittel.
Date: June 18, 2026.
Supervision: witnesses present and official timing.
Time: see timing sheet and related documents.

Medical Context

This performance was achieved five months after my discharge from the hospital, following a major surgical operation on my leg in November 2025. This context gives the effort particular significance in terms of recovery, resilience, and endurance capacity.

Technical Characteristics of the Effort

Butterfly stroke using arms only is one of the most demanding movements in swimming.

The use of hand paddles increases the propulsion surface, thereby raising the mechanical load by approximately 30 to 40%.

Technical Challenges of a 1‑km Corkscrew Swim Without Leg Use

In the case of propulsion without the use of legs:

When practicing the corkscrew stroke that relies entirely on arm strength:

propulsion depends solely on the deltoids, triceps, latissimus dorsi, rhomboids, and pectorals;

each pull must be steady, wide, and fully controlled to maintain speed;
fatigue appears quickly, as the arms must compensate for the complete absence of leg thrust.
Without leg propulsion, speed naturally drops by 30 to 40 percent.

Body Rotation and Lateral Stability

Corkscrew swimming requires continuous rotation of the body along its longitudinal axis. Without legs:

lateral stability becomes a major challenge;
the oblique muscles, transverse abdominis, lumbar muscles, and pelvic stabilizers must work constantly;
any loss of core tension leads to imbalance, deviation from the trajectory, or sinking of the pelvis.

Arm‑Trunk Coordination Without Leg Support

The corkscrew movement relies on fine synchronization between:

trunk rotation,
arm pull,
breathing.

Without legs, coordination becomes more demanding:

the body does not naturally rebalance itself;
each cycle must be perfectly timed to avoid rhythm disruption;
rotation must remain fluid to prevent hydrodynamic drag.

Breathing During Continuous Rotation

Without legs:

the body does not rise naturally to the surface;
arm strength alone must lift the head;
breathing must be brief, precise, and perfectly synchronized with rotation;
any timing error causes the chest to sink and leads to loss of speed.

Endurance over 1 Kilometre Using Only the Arms

Maintaining corkscrew swimming for 1 km without legs requires

endurance:

management of asymmetric fatigue caused by continuous rotation;
maintaining a steady pace despite increased load on the shoulders and back;
ability to preserve clean technique despite progressive exhaustion of trunk muscles.

Pain Management and Injury Prevention

The absence of leg propulsion creates mechanical overload on:

the shoulders,
the cervical spine,
the thoracic spine,
the lumbar region.

A clean, economical technique, refined body awareness, and constant vigilance are essential to avoid injuries or harmful compensations.

Notes :

Few swimmers perform the corkscrew stroke (I may be the only one, being its precursor)
High technical demand: continuous rotation, complex breathing, difficult stability.
Intense physical load: arm‑only propulsion, permanent core engagement. It is possible to swim it with two butterfly kicks on the back/side per body rotation, when leg use is allowed or possible.
For a 1‑km backcrawl, an elite swimmer could go down to about 14 minutes when using leg propulsion, the flip turn, and the underwater glide phase.
There is no flip turn or underwater glide phase without the use of the legs.
My 1-km performance of June 18, 26 was done right after my I km, hands with paddles, arm-only, non-stop butterfly stroke

Technical Challenges of a 1 km Butterfly Swim With Hand Paddles, Without Leg Use, in a Post Surgical Context

Full Arm Propulsion With Hand Paddles

Swimming butterfly with hand paddles and without using the legs requires propulsion generated entirely by the upper body. The paddles increase the surface area of the pull but also add 30–40% more resistance, which results in:

extreme strain on the deltoids, pectorals, triceps, latissimus dorsi, rhomboids, and trapezius muscles;
increased mechanical load on the shoulders, which must absorb the additional effort created by the paddles;
accelerated fatigue, as the arms must compensate both for the absence of leg thrust and for the added resistance of the paddles;
the need to maintain perfect stroke amplitude to avoid loss of speed and parasitic movements.

Maintaining Horizontal Body Position Despite Hip Surgery

Five months after major hip surgery, the body presents natural asymmetry and pelvic fragility. Without leg kicks:

the body tends to sink more on the operated side;
continuous core engagement is required, involving the deep abdominal muscles, the lumbar muscles, and the pelvic stabilizers;
any loss of tone leads to imbalance, hydrodynamic drag, and increased fatigue.

Butterfly Coordination With Paddles and Without Legs

Butterfly is normally a four‑phase movement. Without legs and with paddles:

coordination becomes two‑phase, but with a significantly higher load on the arms;
each cycle must be perfectly synchronized to avoid rhythm disruption;
paddles amplify timing errors: a stroke that is too wide or too short immediately causes loss of speed;
lateral stability is harder to maintain, especially after hip surgery.

Breathing Under Motor Impairment and Post‑Surgical Conditions

Breathing in butterfly without leg assistance, with paddles, and after hip surgery is a major challenge:

the body does not naturally rise to the surface;
paddles make lifting the head heavier and more demanding;
breathing must be short, precise, and perfectly synchronized with the stroke;
even slight timing errors cause the chest to sink and disrupt the rhythm.

This requires elite‑level breath control, combined with careful management of post‑surgical discomfort.

Endurance in a Post‑Surgical Context

Swimming butterfly with paddles, without legs, five months after major hip surgery demonstrates endurance:

management of asymmetric muscular fatigue caused by the operated hip;
maintaining a steady pace despite increased load on the shoulders and back;
ability to preserve clean technique despite residual pain, ongoing healing, and joint fragility;
adaptation of the body to propulsion generated exclusively by the arms, without any leg‑driven acceleration.

Pain Management, Injury Prevention, and Post‑Surgical Constraints

The absence of leg propulsion and the use of paddles create mechanical overload on:

the shoulders,
the cervical spine,
the thoracic spine,
the lumbar region,
the operated hip, which must remain stable despite trunk rotation.

A clean, economical technique, highly refined body awareness, and constant vigilance are essential to avoid injuries or dangerous compensations.

Notes:

Very few swimmers worldwide complete 2 km of butterfly — even with full use of their legs.

Recovery after major surgeries typically requires many months before an athlete can safely resume demanding physical activity.