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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, METHODS, RESULTS. Meshes: Adolescent, Basketball, Heart Rate, Humans, Male, Perception, Physical Conditioning, Human, Physical Exertion, Time Factors.
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Does cumulative Training Dose alter the Interrelationships Between Common Training Load Models During Basketball Activity? Context: The influence of various factors on training load responses in basketball has received limited attention. This study aimed to examine the temporal changes and influence of cumulative training dose on training load responses and interrelationships during basketball activity. Ten state-level, Australian, male, junior basketball players completed 4 x 10-min standardized bouts of simulated basketball activity using a circuit-based protocol. Internal training load was quantified using the session rating of perceived exertion (sRPE), summated heart rate zones (SHRZ), Banister's training impulse (TRIMP), and Lucia's TRIMP models. External training load was assessed via measurement of mean sprint and circuit speeds. Temporal training load comparisons were performed between each 10-min bout, while Pearson correlation analyses were conducted across cumulative training doses (0-10, 0-20, 0-30, and 0-40 min). sRPE training load increased (P < 0.05) following the first 10-min bout of basketball activity. sRPE training load was only significantly related to Lucia's TRIMP (r = 0.66-0.69; P < 0.05) across 0-10 and 0-20 min. Similarly, mean sprint and circuit speed were significantly correlated across 0-20 min (r = 0.67; P < 0.05). In contrast, SHRZ and Banister's TRIMP were significantly related across all training doses (r = 0.84-0.89; P < 0.05).
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Limited convergence exists between common training load approaches across basketball training doses lasting beyond 20 min. Thus, the interchangeability of commonly-used internal and external training load approaches appears dose-dependent during basketball activity, with various psychophysiological mediators likely underpinning temporal changes. Final Decision: yes