The roles of gravity like constant force and forces generated by mass inertia on the correct performance of reactive jumps on the ATHLETIC device.

The roles of gravity like constant force and forces generated by mass inertia on the correct performance of reactive jumps on the ATHLETIC device. - ATHLETIC Plyometrics

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00036059

Enrollment

Registered

2025-03-21

Start date

2025-05-15

Completion date

Unknown

Last updated

2025-10-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Feasibility of plyometric training exercises on the ATHLETIC device

Interventions

Group 1: Study Day 1/Baseline Collection (1,5 h): Vertical CMJ (Countermovement Jump) and hopping on the force plate. Measurements: EMG of M. vastus lateralis (right/left), M. gastrocnemius lateralis

Eligibility

Sex/Gender

All

Age

20 Years to 60 Years

Inclusion criteria

Inclusion criteria: • Subjects aged 20-60 with no relevant medical or mental history • Weight between 50 and 100 kg • Body height 150 to 200 cm • Performing regular recreative sports (no elite athletes)

Exclusion criteria

Exclusion criteria: • Any acute or chronic neuro-muscular or orthopedic injuries, diseases or disabilities, which prevent strength training or plyometric training. • Drug, medication or alcohol abuse (regular consumption of more than 20-30 g alcohol/day) • Taking medications that may impair cognitive function, autonomic function or any of the study procedures. • Any other medical condition that the investigators consider a contraindication to the study procedures that would make it unsafe or confound the measurements. • Pregnancy • History of severe chronic or acute cardiovascular disease • History of severe chronic or acute pulmonary disease

Design outcomes

Primary

Measure	Time frame
Exercise: Countermovement jump, forefoot hopping n.a.(at a given frequency of 2.2Hz making hops comparable between subjects) Given variables: Constant force (analogue with the body weight), mass inertia Measured variables: Ground reaction force (jump; landing and relaunch with one or two maxima of ground reaction force?), take-off speed, jump height, ground contact time during hopping (target < 200 ms), joint angles (knee and ankle); EMG of agonists and antagonists of the lower extremities (M. vastus lateralis right/left, M. gastrocnemius laterals right/left).	—

Measure

Time frame

Exercise: Countermovement jump, forefoot hopping n.a.(at a given frequency of 2.2Hz making hops comparable between subjects) Given variables: Constant force (analogue with the body weight), mass inertia Measured variables: Ground reaction force (jump; landing and relaunch with one or two maxima of ground reaction force?), take-off speed, jump height, ground contact time during hopping (target < 200 ms), joint angles (knee and ankle); EMG of agonists and antagonists of the lower extremities (M. vastus lateralis right/left, M. gastrocnemius laterals right/left).

—

Countries

Germany

Contacts

Public ContactCarina Arndt

Deutsches Zentrum für Luft- und Raumfahrt Institut für Luft- und Raumfahrtmedizin

Carina.arndt@dlr.de+49 2203 601 2801

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026