Acute kinematic and kinetic augmentation in horizontal jump performance using haltere type handheld loading

Area of Science:

• Biomechanics
• Sports Science
• Human Movement Analysis

Background:

• Horizontal jumping is a key performance metric in many sports.
• Understanding how external loading affects jump mechanics is crucial for training optimization.
• Previous research has explored various loading strategies, but optimal handheld loads remain unclear.

Purpose of the Study:

• To investigate the impact of handheld (haltere) loading on horizontal jump kinematics and kinetics.
• To identify an optimal relative load (% body mass) for maximizing horizontal jump distance.

Main Methods:

• 16 athletes performed horizontal jumps with varying handheld loads (0, 6, 8, 12, 16 kg).
• Kinematic and kinetic data were collected using an in-ground force plate.
• Repeated measures ANOVA with post hoc contrasts analyzed the effects of different loads.

Main Results:

• Loads of 6 and 8 kg significantly increased jump distance, duration, peak vertical ground reaction force, and impulse.
• A 16 kg load significantly reduced jump distance and mean horizontal ground reaction force.
• The optimal relative load for enhancing jump distance was determined to be 9.2 ± 3.4% of body mass.

Conclusions:

• Handheld loading significantly augments vertical and horizontal force and impulse during horizontal jumping.
• Specific loads can enhance jump performance, with an optimal range identified.
• These findings suggest potential training applications for athletes with identified force production deficits.