The Effects of Ischemic Preconditioning on Neuromuscular Fatigue Etiology during a soccer match in Soccer Players

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

PACTR

Registry ID

PACTR202409891129982

Enrollment

Registered

2024-09-19

Start date

2020-07-15

Completion date

Unknown

Last updated

2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neuromuscular Fatigue

Interventions

None listed

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: semi-professional soccer players Subjects were training at a frequency of four sessions per week and were playing for the last 2 years for a local football club

Exclusion criteria

Exclusion criteria: recent history of muscle-skeletal injury specific dietetic or pharmacologic treatment

Design outcomes

Primary

Measure	Time frame
Assessment of Neuromuscular Function of the Quadriceps: EMG activity was recorded from the rectus femoris (RF), vastus lateralis (VL), and vastus medialis (VM). The cathode (self-adhesive electrode: Ag-AgCl,10-mm diameter) was positioned firmly on the femoral triangle. The anode, a 10 × 5 cm self-adhesive stimulation electrode (Compex Medical SA, Ecublens, Switzerland) was placed midway between the greater trochanter and the iliac crest. Optimal stimulation intensity was determined from M-wave and force measurements before each testing session. The stimulation intensity was increased by 5 mA until there was no further increase in peak twitch force (i.e., plateau in knee extensor twitch force) and concomitant peak-to-peak maximal M-wave amplitude (M-max). During the subsequent testing procedures, the intensity was set to 150% of this intensity (supramaximal intensity) to avoid the potential confounding effect of axonal hyperpolarization (Burke, 2002). The neuromuscular assessment began with two practices of MVIC to ensure potentiation of subsequent evoked measures, followed by three ~3 s MVICs, all separated by 30 s. For each MVIC, two electrical nerve stimulations were delivered over the femoral nerve. The first stimulation, delivered during the MVIC, was named the superimposed twitch, and the second stimulation, delivered 3 s after the MVIC, was named the potentiated twitch (Qtw,pot). For central fatigue, we calculated changes in voluntary activation (VA) using both superimposed and potentiated twitches amplitude as follows (Daab et al., 2024): VA (%) = [1-( Superimposed twitch/Qtw, pot)] × 100. Twenty-meter sprint times (SP) during the LIST were measured using telemetric photoelectric cells placed at 1 and 20 m	—

Measure

Time frame

Assessment of Neuromuscular Function of the Quadriceps: EMG activity was recorded from the rectus femoris (RF), vastus lateralis (VL), and vastus medialis (VM). The cathode (self-adhesive electrode: Ag-AgCl,10-mm diameter) was positioned firmly on the femoral triangle. The anode, a 10 × 5 cm self-adhesive stimulation electrode (Compex Medical SA, Ecublens, Switzerland) was placed midway between the greater trochanter and the iliac crest. Optimal stimulation intensity was determined from M-wave and force measurements before each testing session. The stimulation intensity was increased by 5 mA until there was no further increase in peak twitch force (i.e., plateau in knee extensor twitch force) and concomitant peak-to-peak maximal M-wave amplitude (M-max). During the subsequent testing procedures, the intensity was set to 150% of this intensity (supramaximal intensity) to avoid the potential confounding effect of axonal hyperpolarization (Burke, 2002). The neuromuscular assessment began with two practices of MVIC to ensure potentiation of subsequent evoked measures, followed by three ~3 s MVICs, all separated by 30 s. For each MVIC, two electrical nerve stimulations were delivered over the femoral nerve. The first stimulation, delivered during the MVIC, was named the superimposed twitch, and the second stimulation, delivered 3 s after the MVIC, was named the potentiated twitch (Qtw,pot). For central fatigue, we calculated changes in voluntary activation (VA) using both superimposed and potentiated twitches amplitude as follows (Daab et al., 2024): VA (%) = [1-( Superimposed twitch/Qtw, pot)] × 100. Twenty-meter sprint times (SP) during the LIST were measured using telemetric photoelectric cells placed at 1 and 20 m

—

Secondary

Measure	Time frame
In both conditions and at baseline, immediately after HT and FT participants were asked to report their rate of perceived exertion (RPE) using the Borg 6–20 RPE scale. Muscle soreness (DOMS) was assessed using a visual analog scale (VAS). The scale ranged from 0 (no pain) to 10 (extreme pain). Participants assumed the anatomical position with their hands on their hips and were instructed to hold a half-squat position with a 90° knee angle. They were then asked to indicate their level of perceived soreness on the provided scale.	—

Measure

Time frame

In both conditions and at baseline, immediately after HT and FT participants were asked to report their rate of perceived exertion (RPE) using the Borg 6–20 RPE scale. Muscle soreness (DOMS) was assessed using a visual analog scale (VAS). The scale ranged from 0 (no pain) to 10 (extreme pain). Participants assumed the anatomical position with their hands on their hips and were instructed to hold a half-squat position with a 90° knee angle. They were then asked to indicate their level of perceived soreness on the provided scale.

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Countries

Tunisia

Contacts

Public ContactMohamed Amine Bouzid

Assistant Professor

bouzid.mohamed-amine@hotmail.fr+21620612799

Outcome results