Cic edizioni internazionali
Muscle, Ligaments and Tendons Journal

Effect of post-activation potentiation induced by one, two or three half-squats on repeated sprint acceleration performance

Original Article, 28 - 36
doi: 10.11138/mltj/2018.8.1.028
Tag this article
Abstract
Full text PDF
Introduction: The aim of this study was to analyze the effect of different post-activation potentiation (PAP) protocols on initial-acceleration (0-10 m) and late-acceleration phases (10 to 30 m) within a repeated sprint ability (RSA) test.
Methods: Twenty athletes (age: 20.8±1.2 years, height: 180.2±5.3 cm, body mass: 76.8±6.4 kg, % body fat: 10.9±2.8, and 3 repetition maximum [3- RM] of half-squats 152.9±14.8 kg) completed 4 testing sessions of RSA testing (7x30-m sprints, starting every 25s, with an active recovery inbetween).
Five minutes before the RSA-testing, conditioning protocols were performed: I) one halfsquats at 90% of 1 repetition maximum (1RM) [PAP1]; II) two half-squats at 90% of 1RM [PAP2]; III) three half-squats at 90% of 1RM [PAP3], and (IV) the control protocol [CON]: no effort. Each conditioning condition was applied in a counterbalanced, randomized order on separate days separated by a minimum of 72 hours’ rest.
Results: ANOVA showed that PAP1 and PAP2 sessions were similar, and brought significantly improved results for: 0-30m and 0-10m sprints of the RSA-time (p<0.001, ES=large) vs the PAP3 and CON-conditions. For the late-acceleration phase of the RSA, the conditioning activity gave no effect (p>0.05, ES=small). Furthermore, magnitude-based inference revealed that both PAP1 and PAP2 protocols elicited changes >75% likelihood of exceeding the smallest worthwhile change (>99% likely) for mean sprint-time (RSAmean) and the percentage of sprint-decrement (RSAdec) in overall 0-30 m and 0-10 m of the RSA test.
Conclusion: PAP1 and PAP2 exert a positive effect on the initial-acceleration phase of the RSA and could be considered in the preparation routine of repeated sprinting activities.

Vol. 8 (No. 4) 2018 October/December

  1. Chondrocalcinosis: a morphofunctional study of crystal deposition in mechanically stressed shoulder soft tissues
    Burini D., Salucci S., Fardetti F., Beccarini A., Calvisi V., Gobbi P., Falcieri E., Curzi D.
    doi: 10.11138/mltj/2018.8.4.465
  2. Functional hyper-extension deficit of the knee and patellar dimple sign in patellofemoral pain syndrome. A preliminary study
    Kaya D., Aksahin E., Doral M.N.
    doi: 10.11138/mltj/2018.8.4.473
  3. The triple F knot: a sliding-locking arthroscopic knot
    Spezia F., Franceschetti E., Franceschi F., Maffulli N., Oliva F.
    doi: 10.11138/mltj/2018.8.4.477
  4. MRI scans do not accurately predict hamstring graft diameter for ACL reconstruction
    Ricci P., Cullen C., Imalingat H., Sergeant J.C., Jain N.
    doi: 10.11138/mltj/2018.8.4.482
  5. Treating Haglund's Deformity with percutaneous Achilles tendon decompression: a case series
    Sergio F., Catani O., Fusini F., Langella F., Cautiero G., Ponzo I., Zanchini F.
    doi: 10.11138/mltj/2018.8.4.488
  6. Structured training volume in early adolescence: a risk factor for femoroacetabular impingement?
    Mullins K., Hanlon M., Carton P.
    doi: 10.11138/mltj/2018.8.4.495
  7. Relationship between anthropometric characteristics and playing position in youth soccer
    Notarnicola A., Maccagnano G., Chierico A., Tafuri S., Moretti B.
    doi: 10.11138/mltj/2018.8.4.502
  8. Posture and scapular dyskinesis in young bowed string instrumental musicians
    Frizziero A., Gasparre G., Corvo S., Gamberini J., Finotti P., Masiero S., Maffulli N.
    doi: 10.11138/mltj/2018.8.4.507
  9. Shoulder external/internal rotation peak torques ratio side-asymmetry, mean work and power ratios balance worsening due to different fatigue resistance of the rotator muscles in male handball players
    Pontaga I.
    doi: 10.11138/mltj/2018.8.4.513
  10. Does TRX training induce similar effects to crossfit? Study on the variation of body fat mass, endurance and explosive force
    Notarnicola A., Salatino G., Napoletano P., Monno A., Moretti B., Tafuri S.
    doi: 10.11138/mltj/2018.8.4.520
  11. The therapeutic effects of manipulation technique on sacroiliac joint dysfunction in young women
    Ashraf V., Shadmehr A., Moghadam B.A., Olyaei G., Reza Hadian M., Khazaeipour Z.
    doi: 10.11138/mltj/2018.8.4.526
  12. Changes of joint position sense in responses to upper trapezius muscle fatigue in subclinical myofascial pain syndrome participants versus healthy control
    Roya M., Gholam Reza O., Azadeh S., Reza H.M., Saeed T.M.
    doi: 10.11138/mltj/2018.8.4.534
  13. Extruded collagen fibres and biphasic collagen sponge for rotator cuff tendon repair application: an ovine in vitro study
    Zafar A., Rushton N.
    doi: 10.11138/mltj/2018.8.4.544
  14. The comparison of dynamic postural control and muscle activity in time domain in athletes with and without chronic ankle instability
    Fereydounnia S., Shadmehr A., Talebian Moghadam S., Olyaei G., Jalaie S., Shiravi Z., Salemi S.
    doi: 10.11138/mltj/2018.8.4.552
Last Viewed articles: la lista degli ultimi x visitati.
  1. Effect of post-activation potentiation induced by one, two or three half-squats on repeated sprint acceleration performance
    Rouissi M., Turki O., Bragazzi N.L., Owen A., Haddad M., Chamari K., Chtara M.
    doi: 10.11138/mltj/2018.8.1.028
credits