Table 2.

Elite-level tennis players’ interval training program

Phase	Step	Ground Strokes	Ground Stroke Intensity, %	Serve	Serve Intensity, %	Total Stroke Volume	Games Played	First Serves per Game	Second Serves per Game	Ground Strokes per Game
1	1	10	50	—	—	10
	2	10	50	2 a	50	12
	3	10	50	3 a	50	13
	4	12	50	4 a	50	16
	5	12	50	6 a	50	18
2	6	14	60	8	60	22	2	6	2	7
	7	18	60	10 b	60	28
	8	22	60	12 b	60	34
	9	26	60	14 b	60	40
	10	28	60	16	60	44	4 c	6	2	7
3	11	28	80	16	80	44	4 c	6	2	7
	12	42	80	24	80	66	6 c	6	2	7
	13	56	80	32	80	88	8 c	6	2	7
	14	42	90	24	90	66	6 c	6	2	7
	15	56	90	32	90	88	8 c	6	2	7
	16	84	90	48	90	132	10 c	10 d		8 e
	17	112	90	64	90	176	12 c	11 d		9 e
	18	56	100	32	100	88	8 c	6	2	7
	19	168	100	96	100	264	14 c	14 d		12
	20	224	100	128	100	352	16 c	12	4	14
	21	Simulated Match

^aAll second serves.

^bCombination of first and second serves.

^cRest 90 seconds after 2 games.

^dTotals do not add up to serve column because of rounding, mathematically inappropriate to use a ratio of first to second serves.

^eTotals do not add up to ground stroke column because of rounding.