Table 1.

Descriptives of the knee extensor exercises, including their implementation.

Exercise	Used in studies (n)	Number of repetitions: median (min-max)	Number of sets: median (min-max)	ROM: median (min-max)a	Intensity: median (min-max)
Straight leg raises	33	10 (5–30)	3 (1–6)	Isometric 0°	BW (BW—75% 1 RM)
Squat	29	10 (5–25)	3 (1–4)	0–45° (0–90°)	BW (BW—80% 1 RM)
Knee extension (sitting)	28	10 (3–30)	3 (1–6)	90–45° (90–0°)	70% 1 RM (BW—80% 1 RM)
Terminal knee extension	26	10 (5–55)	3 (1–5)	10° (0–30°)	BW (BW—10 RM)
Wall squat	22	10 (10–20)	3 (1–3)	0–45° (0–90°)	BW (BW—BW + 10%)
Step downs	22	20–10	3 (1–3)	20 cm (3,6–25 cm)	BW (BW—BW + 10%)
Single leg squat	17	10 (6–20)	3 (1–3)	0–90° (0–90°)	BW (BW—70% 1 RM)
Quad Set	15	10 (10–15)	3 (1–3)	Isometric 0°	BW (BW—BW + Resistance band)
Leg press	13	10 (7–20)	3 (2–4)	0–45° (0–90°)	70% 1 RM (50%–80% 1 RM)
Lunges	13	10 (6–25)	3 (3–3)	0–90° (0–90°)	BW (BW—70% 1 RM)
Isometric contraction	10	10 (10–10)	3 (1–3)	0° (0–90°)	NA
Hip thrust	4	10 (6–20)	3 (2–3)	?	BW (BW—70% 1 RM)
Sit to stand	2	10 (6–20)	1 (1–1)	0–90° (0–90°)	BW
Cross-ski in water	1	2 min	2	?	NA
Frontal kick in the water	1	2 min	2	?	NA
Hopping activities	1	2 min	2	?	NA
Single leg step jump	1	15–10	3	?	BW
Single leg wall squat	1	60 s	3	0–60° (−)	BW
Wingate sprint	1	30 s	6	NA	1 kp

^a Degrees of knee flexion.

BW, body weight; ?, was not specified; NA, not applicable; 1RM, one repetition maximum; kp, kilopond; ROM, range of motion.