Athletic Performance; Neuromuscular Function; Lower-Limb Performance;Sanda
Conditions
Brief summary
This randomized controlled trial evaluated the effects of an 8-week combined strength and plyometric training program on lower-limb performance and neuromuscular function in male Sanda athletes. Thirty male Sanda athletes were randomly assigned to a strength training group or a combined strength and plyometric training group. Both groups trained three times per week for 8 weeks. Outcomes were assessed before and after the intervention and included standing long jump, countermovement jump, hexagon test, reactive strength index, lower-limb vertical stiffness, and lead-leg Sanda roundhouse kick attack time.
Interventions
BEHAVIORALStrength Training
The strength training intervention consisted of periodized resistance training over 8 weeks, with progressive increases in intensity based on one-repetition maximum. Exercises included lower-limb resistance exercises such as squat, deadlift, and lunge variations.
BEHAVIORALCombined Strength and Plyometric Training
The combined training intervention consisted of the same periodized strength training program as the strength training group plus a plyometric training component. Plyometric exercises were performed on non-slip rubber flooring, and jump height was monitored before each session.
Sponsors
Mingjie Hu
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
MALE
Age
18 Years to 25 Years
Healthy volunteers
Yes
Inclusion criteria
Male Sanda athletes aged 18-25 years. Holders of National Second-Class Athlete certification or above. Provided written informed consent before participation.
Exclusion criteria
Recent musculoskeletal injury, particularly of the lower limbs. Any contraindication to high-intensity training. Participation in additional structured strength or plyometric training during the previous 8 weeks.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Standing Long Jump Performance | Baseline and post-intervention within 48 hours after the final training session, approximately 8 weeks | Standing long jump distance was assessed using standardized procedures. Participants completed three maximal trials, and the best distance in centimeters was recorded. |
| Change in Countermovement Jump Height | Baseline and post-intervention within 48 hours after the final training session, approximately 8 weeks | Countermovement jump height was assessed using a force platform. Participants completed three trials with hands on hips, and jump height was derived from the equipment. |
| Change in Hexagon Test Performance | Baseline and post-intervention within 48 hours after the final training session, approximately 8 weeks | Change-of-direction performance was evaluated using the hexagon test. Participants completed three timed trials, and the fastest time in seconds was retained. |
| Change in Reactive Strength Index | Baseline and post-intervention within 48 hours after the final training session, approximately 8 weeks | Reactive strength index was derived from force-platform data during repeated bilateral maximal vertical hops. |
| Change in Lower-Limb Vertical Stiffness | Baseline and post-intervention within 48 hours after the final training session, approximately 8 weeks | Lower-limb vertical stiffness was calculated from force-platform data during repeated hopping trials using peak ground reaction force, center-of-mass vertical displacement, body mass, contact time, and gravitational acceleration. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in Lead-Leg Sanda Roundhouse Kick Attack Time | Baseline and post-intervention within 48 hours after the final training session, approximately 8 weeks | Lead-leg Sanda roundhouse kick attack time was assessed as a sport-specific outcome using high-speed video recording. Attack time was defined as the interval from movement onset to first target contact, and the mean of three valid trials was used for analysis. |
Countries
China
Outcome results
None listed