Abstract

Squash is a popular racket sport that requires intermittent activity with frequent bursts of near maximal-intensity exercise. Consequently, effective physiological and thermoregulatory responses are important contributors to performance during squash match-play. Controlled field-based simulation protocols have been introduced in a growing number of sports, which allow sports scientists to investigate changes in physiology and the efficacy of various interventions in sport-specific contexts. This study aimed to develop an exercise protocol that simulates the physiological requirements of elite squash match-play. Eight elite junior squash players (age 16.2+0.8 years, height 1.76+0.06 m, body mass 61.3+5.9 kg; mean+s) completed the following in a randomized order: (1) a squash match against a player of similar standard and (2) a squashspecific incremental exercise protocol (multistage squash test [MST]) followed by the squash simulation protocol (SSP). The multistage squash test was continued for 18.0+1.0 min and elicited near maximal post-MST heart rates, blood lactate concentrations and ratings of perceived exertion (198+9 beats min71, 5.7+1.7 mmol l71 and 18+1, respectively). The SSP was 12.2 min in length compared with mean game length during competitive matches of 10.0+1.6 min (P¼0.27). Peak heart rates were similar during the SSP and match-play (192+11 and 189+6 beats min71, respectively; P¼0.44). Mean exercising heart rates were similar during the SSP (180+8 beats min71) and match-play (179+13 beats min71; P¼0.73). Peak blood lactate concentrations during the SSP and match-play were 3.5+1.5 and 2.4+1.2 mmol l71 (P¼0.07), respectively. Peak ratings of perceived exertion during the SSP and match-play were similar (17+2 and 17+2, respectively; P¼0.64). It was concluded that the SSP closely replicated the demands of squash match-play in elite junior squash players. Furthermore, the SSP provides coaches and scientific support staff with a controlled squash-specific exercise protocol that has potential application in the objective investigation of a range of interventions such as training programmes, nutritional supplements and strategies to maintain core body temperature. Verf.-Referat