CONDITIONING-TO-SKILL TRANSFER IN BASKETBALL: A LARGE-SAMPLE COMPARATIVE TRIAL OF CIRCUIT TRAINING, PLYOMETRIC TRAINING, AND COMBINED TRAINING ON VERTICAL JUMP HEIGHT AND SHOOTING ACCURACY

Abstract

Background and Theoretical Rationale: The major issue yet to be sorted out in the scientific study of conditioning in basketball is whether any improvement in physical capabilities brought about through planned training can result in an observable effect in terms of sports specific technical skill capability. Although there have been numerous studies related to CT, PT, and COMB as forms of conditioning exercises, no study based on a significant sample size has done a direct comparison between CT, PT, and COMB in relation to VJH and SA.

Objective:  Fo r comparison of the within and between group effects of CT, PT, and COMB on VJH and SA among the population of amateur basketball players as well as assessment of the conditioning-to-skill-transfer mechanism via theoretical basis involving the SAID principle, neuromuscular adaptation theory, and transfer of training theory.

Methods:  Three-group quasi-experimental pre-post design (TREND-compliant). Nine hundred amateur basketball players (Male: n = 485, Female: n = 415; age: 20.3 ± 3.1 years; training experience: 5.5 ± 2.6 years) were enrolled from university, school, and community programmes and assigned to CT (n = 274), PT (n = 323), or COMB (n = 303). Interventions ran for eight weeks at three sessions per week. VJH was assessed via standardised counter-movement jump (CMJ; ICC = 0.96); SA was assessed via the AAHPERD basketball shooting test (ICC = 0.91). Within-group effects: paired-samples t-tests, Cohen's d, Hedges' g, 95% confidence intervals. Between-group effects: one-way ANOVA, Tukey HSD post-hoc, partial eta-squared (η²p). Individual-level practical significance was evaluated using Smallest Worthwhile Change (SWC = 0.2 × pre-test SD).

Results: All three modalities produced statistically significant and practically large within-group improvements (all p < 0.001). VJH: CT +4.70 cm (9.2%, d = 2.40, 95% CI [4.46, 4.93]); PT +4.32 cm (8.7%, d = 2.24, 95% CI [4.11, 4.53]); COMB +4.61 cm (9.1%, d = 2.33, 95% CI [4.39, 4.84]). SA: CT +7.01% (10.4%, d = 2.44, 95% CI [6.67, 7.35]); PT +6.91% (10.3%, d = 2.56, 95% CI [6.62, 7.21]); COMB +7.26% (10.6%, d = 2.54, 95% CI [6.94, 7.58]). Between-group: statistically significant but trivially small VJH difference (F(2,897) = 3.18, p = 0.042, η²p = 0.007; CT > PT: Tukey p = 0.048, d = 0.20); SA not significant (F(2,897) = 1.23, p = 0.293, η²p = 0.003). SWC analysis: 88–91% of participants exceeded VJH SWC; ≥99% exceeded SA SWC across all groups.

Conclusion: The effectiveness of all three modalities in eliciting conditioning-to-skill transfer is unequivocal and leads to consistently large performance effects on physical performance and skills. Inter-group differences exist but are statistically significant yet practically meaningless for VJH, while none exist for SA. This suggests a lack of differential clinical effect between the modalities from the perspective of basketball conditioning practice. The results offer benchmarking measures for effect sizes within basketball conditioning research and contribute towards the conditioning-to-skill transfer controversy through evidence showing the importance of periodisation and context when selecting a modality.