1. Influence of the abstinence period on human sperm quality
Christopher De Jonge, Ph.D., Marie LaFromboise, B.S., Eugene Bosmans, Pharm.D., Willem Ombelet, M.D., Ph.D., Annemie Cox, Martine Nijs, M.Sc. 
Fertility and Sterility 
Volume 82, Issue 1, Pages (July 2004)
DOI: /j.fertnstert

2. Figure 1
Sperm and semen parameters. In all panels, subject number corresponds to each study participant; mean is the calculated mean value for all subjects at each abstinence time period; and colors indicate the following. Dark blue, day 1 (corresponds to 24 hours' abstinence); red, day 3 (corresponds to 3 days' abstinence); yellow, day 5 (corresponds to 5 days' abstinence); light blue, day 8 (corresponds to 8 days' abstinence). (A) Volume (mL). (B) Sperm concentration (× 106/mL). (C) pH. (D) Viability (percentage). (E) Motility (percentage). (F) Grade A motility (percentage). (G) Morphology (percentage). (H) DFI (percentage). (I) HDS (percentage).
De Jonge. Ejaculatory abstinence and sperm quality. Fertil Steril 2004.
Fertility and Sterility  , 57-65DOI: ( /j.fertnstert )

3. Figure 1
Sperm and semen parameters. In all panels, subject number corresponds to each study participant; mean is the calculated mean value for all subjects at each abstinence time period; and colors indicate the following. Dark blue, day 1 (corresponds to 24 hours' abstinence); red, day 3 (corresponds to 3 days' abstinence); yellow, day 5 (corresponds to 5 days' abstinence); light blue, day 8 (corresponds to 8 days' abstinence). (A) Volume (mL). (B) Sperm concentration (× 106/mL). (C) pH. (D) Viability (percentage). (E) Motility (percentage). (F) Grade A motility (percentage). (G) Morphology (percentage). (H) DFI (percentage). (I) HDS (percentage).
De Jonge. Ejaculatory abstinence and sperm quality. Fertil Steril 2004.
Fertility and Sterility  , 57-65DOI: ( /j.fertnstert )

4. Figure 1
Sperm and semen parameters. In all panels, subject number corresponds to each study participant; mean is the calculated mean value for all subjects at each abstinence time period; and colors indicate the following. Dark blue, day 1 (corresponds to 24 hours' abstinence); red, day 3 (corresponds to 3 days' abstinence); yellow, day 5 (corresponds to 5 days' abstinence); light blue, day 8 (corresponds to 8 days' abstinence). (A) Volume (mL). (B) Sperm concentration (× 106/mL). (C) pH. (D) Viability (percentage). (E) Motility (percentage). (F) Grade A motility (percentage). (G) Morphology (percentage). (H) DFI (percentage). (I) HDS (percentage).
De Jonge. Ejaculatory abstinence and sperm quality. Fertil Steril 2004.
Fertility and Sterility  , 57-65DOI: ( /j.fertnstert )

5. Figure 1
Sperm and semen parameters. In all panels, subject number corresponds to each study participant; mean is the calculated mean value for all subjects at each abstinence time period; and colors indicate the following. Dark blue, day 1 (corresponds to 24 hours' abstinence); red, day 3 (corresponds to 3 days' abstinence); yellow, day 5 (corresponds to 5 days' abstinence); light blue, day 8 (corresponds to 8 days' abstinence). (A) Volume (mL). (B) Sperm concentration (× 106/mL). (C) pH. (D) Viability (percentage). (E) Motility (percentage). (F) Grade A motility (percentage). (G) Morphology (percentage). (H) DFI (percentage). (I) HDS (percentage).
De Jonge. Ejaculatory abstinence and sperm quality. Fertil Steril 2004.
Fertility and Sterility  , 57-65DOI: ( /j.fertnstert )

6. Figure 1
Sperm and semen parameters. In all panels, subject number corresponds to each study participant; mean is the calculated mean value for all subjects at each abstinence time period; and colors indicate the following. Dark blue, day 1 (corresponds to 24 hours' abstinence); red, day 3 (corresponds to 3 days' abstinence); yellow, day 5 (corresponds to 5 days' abstinence); light blue, day 8 (corresponds to 8 days' abstinence). (A) Volume (mL). (B) Sperm concentration (× 106/mL). (C) pH. (D) Viability (percentage). (E) Motility (percentage). (F) Grade A motility (percentage). (G) Morphology (percentage). (H) DFI (percentage). (I) HDS (percentage).
De Jonge. Ejaculatory abstinence and sperm quality. Fertil Steril 2004.
Fertility and Sterility  , 57-65DOI: ( /j.fertnstert )